10 Common Mistakes DIYers Make In Circuit Breaker Boxes
How much do you know about your circuit breaker box or electrical panel? Learn what not to do!
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00:00 Labels Missing Or Incorrect
01:32 Overloading the Panel
02:40 Missing Bushings
03:58 Wrong Wire Gauge or Breaker Amperage
05:18 Improper Grounding
06:37 Overloading Bus Bar Slots
07:24 Wrong Color Wires
08:27 Double Tapping
10:01 Missing Panel Plates
11:20 Under or Over Torquing
12:58 Bonus: Panel Layout
It's worth mentioning that back in olden in the old days (say 25 years ago), All NM Romex style cable had the same white color sheathing, regardless of its gage. When checking for over fusing of circuits what appears to be an over fused 15 amp (14 gage) circuit may actually be correctly fused 20 amp circuit with white sheathed 12 gage wire.
That’s great to know and definitely worth pointing out. Thanks!
A lot of upgrades that were done to my house in the 90s used 12 gauge cable that had a blue sheath. And I still have some 12 gauge cable that was installed in the 60s with a black sheath. So, color can be a guide but nothing to trust unless you know the history of the building.
I still have about 75' of white 12/2 that my uncle gave me. I use it for extending outlets and relocating light fixtures as needed.
It all had white outer insulation but it was clearly marked with the gauge. It was usually printed, but sometimes embossed. I've seen both. If you can see either end (J-box or panel), it's pretty obvious anyway. I think it's more to help the installer than someone coming around later.
I have that issue. Every circuit that has a 30A breaker is going to be checked to confirm wire gauge. I'll first check the wire size at the breaker panel then out on the end where the lights and plugs are installed. I have a micrometer that reads in thousandth of an inch so with that I can easily measure actual copper wire size.
Thank You sir ! As a retired Journeyman Electrician with more than 50 years of experience in the field I saw more than my share of the "rats nest" type of panels, gasoline stations that had been remodeled several times. I couldn't always make them look perfect, but I tried. Any of the new Installations that I worked on, looked like the 3 phase panel you showed. When I upgraded my own residence from 70 amp Zinsco to a 200 amp Homeline all my wires were formed and marked. When the city inspector came for final inspection he was taken aback and had to take a picture of the work. It is sad to say that too many tradesmen do not take pride in their work and only do the minimum.
This is not a 3 phase panel. It is a sub-panel, with two hots and one neutral cable, which are all insulated. The center conductor has a white stripe, and is the neutral, and not the third phase. There is also a ground cable, which is not insulated.
I’m sure your fire department and insurance company thanked you for changing out that Zinsco. Given the issues with the Zinsco breakers, you saved yourself quite a headache.
@@hsailer No -- @13:04 the panel with the nice wiring IS a 3 phase panel (black - red - blue) with the neutral (black wire with white tape on it) coming down the left side and the ground wire on the right side 🤨
I've had that experience and I'm not a pro.
@@hsailer I could not tell if neutral had bonding screw in or not in this vid, but the point is super important. On any service, only one point is needed for referencing neutral to earth, otherwise ground loop issues may emerge, and as we all know... lightning takes ALL paths to ground. A sub panel must not duplicate neutral to earth bond found at main panel. Anyway....sparkyman got it right. Cheers!
When you color tape a white conductor to indicate a hot wire you absolutely must tape the other end where it terminates. A hot white wire in a box could be taken as a neutral and used opposite a hot from the opposite side of the panel resulting in a 240 volt feed applied to a 120 volt appliance.
This was my exact thought when the red tape was added to the wire in the panel (common mistake #7). Both ends of that wire need to be color coded in the same manner.
@@FarmRanchHomestead I agree, need to make sure the other end is marked too. I'm glad someone beat me to it 5 months and then 15 hours ago!
Yes that is correct. I was taught to use black tape to mark a hot white wire because the hot wires are black.
Yes. . . And on large cables, we also taped or marked them both sides of walls or bulkheads as well. . . I also number Outlets, with the Circuit Breaker number and it position in a circuit, such as CB4-3. . . Being the 3rd outlet feed from CB #4
@@slalomking If it's the secondary hot (240V circuit) it has to be a color other than black (or white, green, or bare). I carry black, red, blue, and green, giant "Sharpies" in my electrical tool bag to mark wires. I do it when I'm installing the circuit, so both ends get marked.
Decades ago I took a studio engineering and sound reinforcement course at the local community college. The instructor did sound for hotels and arenas and other venues. He said that he always ran into tripping breakers because in most places like banquet halls and hotels, everybody uses the circuit breakers like a wall switch, and every time they manually trip the breaker to turn the power on and off it slightly reduces the friction or resistance necessary to trip it. So over years and years of being flipped open and closed, a 15 amp fuse might only be able to handle 12, or 13 amps. So he always carried a hand full of breakers in case he ran into one that would refuse to stay closed.
Good story. Breakers are rated for 100 on/off cycles unless it is a switch duty breaker.
Personally, if load on a 15a breaker goes north of 85%, I'm looking to move to a 20a breaker [with new pull of 12awg as needed]. Heat kills the bakeolite material over time, and that can get VERY exciting: pull a breaker and the stabs just might leave the frame/stay on the bus after a few decades. On a 2p or 3p breaker suffering such an event, odds of flashover are very high. The 85% rule has done well for me on any ampacity breaker over the years - as long as wire size gets corrected as needed. Even still, a thermograpghic inspection periodically is money well spent.
In RV parks with electric hookups many campers (including me) switch the breaker off before & after plugging in. My guess is that they see hundreds of cycles, and I have never been warned to avoid that practice.
Ah, the old days. Now, if a breaker does not hold, just find another one. The liability of playing in a hotel breaker box is just not worth it. We will typically carry our own 200A temp distro and have the facility tie it in for us. All liability transferred to them then.
Correct. . . Circuit Breakers should not be used as regular Switches for multiple use. Keep their use to a minimum.
Dude waving his hands and fingers around near the main lugs was giving me cold sweats
Also wearing a ring! May not be conductive but can be a catch hazard cause you to inadvertently move your hand in wrong direction!
Exactly! ESPECIALLY while talking about "are you qualified and confident that you can mess with electrical" while looking into the camera and away from the box. Yes, please give me more safety advice! 🤣 Maybe shoulda been titled "11" common mistakes
I just typed how I'd deal with it so I didn't need to stress touching things in the fuse box while I was actually working, but it might encourage someone else to try and cut the power before the fuse box who didn't know what they were doing and I don't want to be responsible for any deaths today. lol
120v relative to you isnt enough to arc more than a millimeter, and just dont touch it.
Oh yes!! He is inches away having a ring welded to a lug and flash burn city. Bad.mistake
Sir, you need to be super, super clear that the mains hardware in the breaker box will be hot even if your breakers are switched off. If newbies follow your example in the video, they would feel safe touching the mains connections and bus bars. You should make it crystal clear that those are no-touch areas unless you are absolutely sure the power is disconnected to those mains (often requiring the power company to remove the electric meter from your service entry).
Great point.
He did disclaim very early on that if you are not trained or comfortable with the box, don't screw with it.
Always assume they are LIVE. Even if you believe them Off.
For this and other reasons I just replace my breaker box in my outbuilding [shop] with a version that has a main disconnect up top [main breaker]. It is a 100 amp panel. The other one was also a 100 amp panel but much smaller and no main breaker at top. Before I touch anything I test for voltage, I never assume anything with electricity.
@@robert5 I sometimes add a light above the panel board, feed through a 1A fuse, from the input side of the Main breaker. This means I can see what I am doing and working on in the Panel board, even when the main Breaker is OFF, but it confirms there is Voltage around.
The panel at 13:09 is beautiful. Personally, I always leave extra length on the hot wires, because you never know when in the distant future things may have to be rearranged, or a panel upgraded. I usually run the wire down to near the bottom of the enclosure and back up to the breaker. I still make it nice and pretty, but that extra length can be a life saver in the future. I've personally thanked quite a few electricians who came before me for doing this, as I'm sure some electricians in the future will thank me long after I'm dead.
As a home inspector, I agree, that panel is not only a work of art, it's so nice to inspect or work on. Unfortunately, a lot of older homes have the rat's nest style.
I used to work with guys who told me not to do that, just send it straight to the breaker. I really do like bringing it down to the bottom of the panel then up tot he breaker myself and that's what i've been doing since i've been on my own
@@goaliedude32 That's because it takes time and time is money; I only do this kind of wiring on my own panels because it sure makes troubleshooting easier and inspections a cake walk.
I came to the comments to say the same thing. If you have room in the panel to keep it neat, drop a loop down to the bottom and then neatly back to the breaker. Somebody will probably thank you in the future.
I always leave... well left an extra 6-8inches of wire in case something has to be moved so another circuit can be added.
I love turning chaos panels into art! I done a panel during COVID shutdown when I was on layoff from my 9-5 and let me tell you it was the worst I'd seen, made the rats nest panel showed in this video look like a work of art. Well 2 days later a fully upgraded panel that looked beautiful, a fully rewired basement, and several changes in the main part of the house were complete and I was totally satisfied with my work. More so impressed was my buddy who hired me to do the work, he knew I had an electrical background but didn't realize I was that good. I just wish I could share the pictures here so you too could see what I walked into and how great it looked when I left. Oh and I didn't mention this place had more junction boxes than any 25 houses I've seen. I done away with as many as I could but to save money most of the old wiring stayed but I got it up to par as best I could with the budget he gave me to work with. Sparky for life.
You would have loved the control panel for dancing waters at Moody Gardens in Galveston, Tx.. One of the most beautiful wiring jobs I'be ever seen. Each and every wire was perfect as were the ty wraps. Each bundle was aligned perfectly and there were hundreds if not thousands of wires.
A few points: If you home is pre-2001, you won't see a yellow jacket on 12ga wire. That started becoming available in 2001, and older wire jacketing will be white, or possibly gray. Most new panels come with covers for the primary lugs. If your panel has a master breaker and it's turned off and the covers are in place, it becomes VERY difficult to accidentally ground those out. They're also available as an option for some older panels. It's within NEC code to have two ground wires under a single screw, but NOT for a neutral. The reason you see that in the example panel is because some bus bars don't come with all the screws populated. Of course, you should always check with the jurisdiction having authority. NEC is a top-level thing. A state, county, or city can have more stringent requirements than the NEC. Lastly, it's always wise to remove jewelry when working in a hot panel. If your ring or watch manages to bridge a hot and neutral or ground, it'll turn to molten metal pretty quick.
I should have read comment before posting my own.🤭
Great info and comments here! Thank you for sharing. I just installed a new sub panel yesterday and it didn't come with covers for the mains so I purchased them separately. Seems like $20 for two pieces of yellow plastic was way overpriced but I felt better having them in place, especially while I'm working on it. Again, great info on the sleeve colors, code and jewelry tip. I have switched to silicone watch band and ring but I suspect the watch body itself could still be an issue potentially.
@@LRN2DIY Twenty dollars is plenty under priced compared to a possible trip to the undertaker.
I believe the NEC allowed 2 Neutrals on the same screw until the early 2000s (not sure the exact year) so if you see this in an older home, it may not be a case of laziness, but a change in code. I it is a good safety improvement to only have one wire on neutrals though, as it could cause arcing. It’s not a problem for ground wires, as they shouldn’t see any current, but are only there in case of an emergency.
I don't wanna see a yellow jacket at all. Those dern bees hurt.
one point: it is currently acceptable to code to land two SAME SIZE AND STRANDING ground wires in one terminal. in some brands of boxes, it is also necessary to do that, or to add additional grounding bars.
Correct! Readers here should know that adding an additional ground bar correctly is simple, inexpensive to buy, and time-saving.
Its a video, not a course. Does this guy not have other videos out that pertain to this subject?
I would add one more important one: turning off the main breaker with all the branch circuits left in the on position. The branch circuits should be turned off first and turned on last when shutting off and turning back on the main breaker to avoid damage to the breaker due to arcing.
It is worth mentioning load balancing - installing circuits such that current is taken from each side of the 120 volt split evenly.
not in a single 240v split supply, this isn't a three phase panel.
A couple of tips for updating your panel schedule. 1) make a layout drawing for your house marking the locations of all outlets and all light fixtures. A drawing thats not to scale is fine. You will turn off all curcuits and only have one circuit on at a time. You will mark on your drawing the circuit number at each location that you detect power. This drawing will be used to help you write a more accurate panel schedule. Any unused spaces with breakers in them can be marked as spare on the panel schedule. Keep in mind that you can have outlets and lights in crawl spaces, attics, and closets. Sometimes you'll find equipment (water heater, dehumidifier, air handler, etc) in these locations. If you have a hardwired doorbell, don't forget to check what circuit that is on. 2) they make printer paper that is a sticker. You can print off your own schedule. Alternately, you can print on regular printer paper and use packaging tape to secure it to the panel. One common mistake many homeowners make is storing items in front of the panel or not having a clear path to the panel. You're supposed to keep the work area and access path clear. The work space extends 3 feet from the face of the panel and is 30 inches wide. The safe access path is supposed to be 3 feet wide. All this is so that you have ready access to the panel in an emergency.
I want to second this from someone who has done a lot of networking installs. Having a basic drawing (ms paint is fine) and labels of where stuff goes makes the difference between a 10mins job vs an all day job.
@@MatthewMattoxcube8021 even a rough handwritten drawing often helps.
I'm glad I did this with my home. I think an observer would be keen to learn that the utility room light is on the same circuit as the guest room receptacles.
@@BigMikeECV some houses are wired with all the lights on one circuit. A lot of newer homes have the bedroom lights on the same circuit as the bedroom receptacles because of the early arc fault rules.
I grew up in a house where the main panel was in the master bedroom closet, at the back of the closet. That house was built in the 1950s. So much for a "clear path" to the panel during an emergency.
As a DIYer, I use a P-Touch labeler to stick labels onto the breakers (makes it easy to see what’s what even with the cover off) and onto each cable coming out of the panel. Saves so much headache down the line and 3rd party p-touch tape is available in a wide variety of colors and sizes (6mm tape is the perfect size for labeling romex)
Great tip!
I use clear tape, black ink and label my wall plates , including the transfer switch breakers.
That works great...until they start falling off. I used my P-Touch to label the drawers on some parts bins about 15 years ago and a while back they started falling off on their own. The ones I've stuck on paper seem to stay just fine, but the ones stuck to plastic eventually give up the ghost. Still not a bad idea, I would just consider wrapping them with a piece of clear tape so if they do come loose, they don't just fall off.
ever hear of SHARPIE marker?
I use my P-Touch labeler often, but for my breaker panel I list out the breaker associations in an Excel table, and print it out (on a regular printer) when things change. Then I cut the table out of the printer paper, and tape it inside the box.
Although wiring a residential main panel to look like a machine tool panel with tight bends and labeling each conductor looks sharp I have always thought of the person that might have to work in the panel down the road. For this reason I forgo the form for function and provide a service loop when landing the hot/feed conductors! When done correctly it will look nice and allow for moving a circuit’s location without having to break out the cumbersome wire stretcher tool 😋
You’re doing a very nice job explaining all the code that’s involved with electrical panels I’ve been doing it for 50 years and I’ve seen a lot of changes
You forgot mistake #11 that you demonstrated in the video: Waving your hands cavalierly around a panel with the cover removed and then tightening the screws on the hot lead of a breaker without switching it off. Even with an insulated screwdriver this is an unnecessary risk, particularly for a nonprofessional. And waving your hands around the lugs where the entrance cable connects is just asking to touch a hot lead by mistake.
Dude was raising my stress level and giving me cold sweats
@@chrismckenna5361 Yes, this sort of thing is what gives DIYers a bad name. 240 V electricity is nothing to treat so cavalierly.
Good grief keep your hands away from those wires. Very unsafe to do this, especially that you were waving your hands near the wires and looking at the camera. Use an insulated screwdriver to point out things, not your fingers.
I agree completely, although it should be MISTAKE #1. The first words out of his mouth should have been to turn the main breaker off. Additionally, he’s not wearing any eye protection. You make a mistake and short something and you are now arc welding and molten metal will be shooting around.
@@glasshalffull2930 Good points.
I must admit that I had some bad experiences as a teen working with high voltage and was terrified to do anything in my box for years. Even something as simple as replacing a receptacle made me cringe. But when I realized the cost of adding a circuit for my shed, I decided it was time to get over my fear. I watched a number of KZhead tutorials but yours was the best. Your videos gave me the confidence to do the job and the knowledge to do it right. I’m now working on replacing all the old wiring from the 1950s when the house was built and upgrading my box. I’m nearly done and will have an electrician check my work in a few days before the electric company turns everything back on. Thank you so much for being so informative and straight to the point in all your videos.
That’s amazing that you were able to overcome that fear and build that skill set too! I’m definitely still learning but it’s such a valuable ability to have. Best of luck with the house - sounds like you’ve got this under control. Thanks so much for watching too!
Now is the time to add a generator hook-up...while the utility is disconnected.
I don’t recall working with you , sorry 😅
I'm the son of an journeyman electrician. I've replaced a few outlets or added a circuit to my own breaker panels once in a while. I have shocked myself a few times. But I've got to admit I still get the heebie-jeebies when I see a breaker panel with the cover off!
@@bernlitzner2739 A mechanical interlock saves $$$: Main must be turned off, slider moved before backup can be closed in.
Thank You sir, 5 stars from me. I did my own 200 amp service in a shop/building. I got 100 % according to you. Also I did my ground rod and grounding as well as I could. I couldn't make my panel wiring as pretty as your example but that is what I was trying for and it is certainly not a rats nest. I am a retired Union pipefitter and in our area of the world that includes the HVAC service world. So glad you included the tightening torque and going back every year to check tightness. . Skip that step and burn a terminal off of a large compressor and you could be looking for a job. It is so important! One last thing, Your presentation and your clean cut appearance make people feel secure when you come to there door. Versus someone wearing their clothes multiple days, hair all over their face, kicking the mud off their boots on your porch and I'm sure from looking at you, you know what I mean. I subscribed and want to see in your other videos what I may have done wrong. Thank You again, It was a pleasure.
Admiring your well organized and efficient presention! You made it a pleasure to watch. Thank you!
I'm an EE and a gearhead. I torque nearly everything on a car. Thank you for pointing out that there's a torque spec on breakers. Never even thought of it. So far using a little sense has kept me from burning any houses down but I will buy the proper tool for the job. Great channel!
Hey me too!
Just think, it is in the electric code twice now. Once where it says to torque and once where it says to follow the listing and labeling instructions. NEC 110.14(D) and 110.3(B) However, I think I am the only Electrical contractor in the area that does torqueing.
@@tiggeroush the guys that did my service upgrade busted out levels and a torque wrench. I was highly impressed.
"Never ever thought about it" really?
You must be a C student EE if you have never heard of that.
A little note about "prettying up" a circuit breaker panel - be careful with your wire bends; the NEC stipulates a minimum bend radius of 8 times the conductor diameter. I once saw a panel that had been rewired by the property owner and it was very neat, but all the conductors had very tight right-angle bends; he was so proud of his work, I didn't have the heart to tell him it was a code violation. The one you showed in your video would be considered acceptable, the bends are gently curved.
Great point. I’ll keep that in mind for sure.
The tight turns stretch the crystals of copper in the wire and create uneven resistance points within the wire and can create hot spots under a heavily loaded wire.
@@LRN2DIY - What you said about derating a panel is not necessary. I used to work at Westinghouse D&C and trust me those panels are made to do the full load all day long and more. Just like there is no 12 guage (yes I know they are rated at 20A) wire out there that will not carry 30 amps and do it very well all day long... they only start to get slightly warm at 40. Beyond 40A on a 12 guage is where things become much more interesting. The buss bars in that panel will handle the 150 quite well. The weak points in an existing panel is the old breakers, the clamps for the input lines if they are corroded or even just tarnished. And the connections for the neutrals and grounds. If you remove the meter, clean up all the connections and put in new breakers, the panel is good as new and I have done this on a couple places I rented because I wanted to head off any possibilities of BS or trouble. I hope that shed some light on it. There is a good video here on YT of a man testing the power handling capacity of Romex wire. Also PhotonicInduction has done some experiments with current and what will and will not happen under loads.
@KlodFather The NEC is pretty conservative, for good reason. Yes it's true that wire could possibly carry more current than NEC allows under normal conditions, and it would do so happily and safely for years. But what happens when the wrong cluster of events lines up to stress the insulation of the wire (hottest day of the summer, drawing the most load the breaker allows [let's just say it's in an air conditioned room and doesn't trip until running more than 100% rating - I've certainly seen this before], etc). Now that undersized wire gets well warmer than the insulation was rated to handle and it starts to melt. Reminder, it's not the conductor that cares about the temperature (at this point). Now the insulation on the current carrying conductors is compromised and you have a recipe for sparks, which will likely start a fire. It's not a coincidence that the NEC is actually an article written by the NFPA [National Fire Protection Association]. Another anecdote, a friend of mine once mentioned about someone he knew running an entire trailer off an either 12 or 14 AWG extension cord. It didn't cause a problem for them because they had the extension cord strung up overhead and therefore had a lot of ability to disperse heat... I certainly don't recommend that
What's the code source on that? Radius bend rule applies only to wire CABLING from my understanding, not individual conductors and the whole "hot spot" debate related to individual conductors isn't a concern at least in panels from my previous research. If that was something to be concerned about imagine how many houses would be burning down due to mangled up wiring in device junction boxes we all deal with daily in the electrical trade.
Great Video! I’ve Been looking everywhere for a better explanation on the Square D double tap breaker. Thank you.
You remind me a lot of I guy I used to work with. He was great at explaining things, looked a bit like you and always left people he talked to happy. So take the compliment, no bow necessary, grin.
The guy that wired my house used the wrong screw on my neutral wire to my sub panel, I came home one day and walked by my panel and thought it was awful warm as I walked by, I removed the cover and sparks was flying out and the plastic clip that was holding the neutral bar was melting as well. The house was 7 years old at the time. It took that long for it to happen. The sad part was the correct screw was lying in the bottom of the box. I had to relocate the wire and up higher due to the damage threads and 10 years on still working great.
Nice clear to understand video! Remember, older NM (non-metallic) white plastic covered cable, “Romex” may be 12 gauge wire as well as 14 Gauge wire. It is nice to have color coding of the wire jacket, especially for inspection purposes. I notice the plastic bushing was missing on the incoming SE (service entrance) cable in the circuit breaker panel. On the Square D circuit breaker, you could use the second wire port to hook up the surge protector in the panel. Great job!
the throat of the clamp for the SE cable is chamfered to prevent cable damage - if your inspector is requiring the bushing, he is being a jerk.
The color coding for NM probably came from lazy inspectors who couldn't be bothered to look at the jacket. That and hiring moronic apprentices to run wire who also couldn't be bothered to read the jacket either.
i have an assortment of old wires in different colors black, white, grey cloth covered with silver all different gauges.
@@ranger178 i used to have a piece of lead sheathed UF cable in my collection.
Excellent run down on how to properly wire a panel. I'm about to rewire my shop panel, so this will be a big help in doing it right.
5:51 if you are going to use a wire nut to combine grounds, consider using a green "grounding wire nut" that has a hole on the end allowing one of the wires to continue at full lenght to land on the grounding bar. This way you don't have an unnecessary extra wire in a "pig tail" to make the final connection to the grounding bar.
Try not to use those, you'll look like a better electrician. 😉
Buccannon crimp
Those wire nuts are horrible to work with after the fact, they only hold well if the wire are twisted together significantly more than necessary. which makes working with the wires again in the future a nightmare.
I like one wire one ground not 1 wire grounding 4 circuits. I am surprised that will pass code. Also a good pair of 600volts gloves make things much safer.
@@voltmeter2 so if you have 4 circuits in a conduit you are going to pull 4 separate grounds?
In my early years as a journeyman electrician, I got busted for not having the panel labeled before I called for the inspection. I was going to do it, but hadn't got around to it first. My boss was pissed! He had to pay for an additional inspection. Lucky he didn't make me cover it. After that, I started writing the circuit number on the inside of the outlet box with a magic marker, in addition to making sure the panel was labeled correctly.
I educate myself to the point i feel i can do it, then i call in an expert. At least then i know if he is ripping me off. A man has to know his limitations ~ Clint Eastwood
A very good way to do it if you don't feel fully comfortable working in a breaker box.
It's only a ripoff until you die from a mistake you made doing it yourself. 🤣 Aside from that, professional work almost always comes warrantied for a period of time, usually electrical is a year(labor and installed parts). These guarantees aren't necessarily cheap...
I recently had a panel added that had a few more spaces than the old panel. Since the house is older, several circuits had outlets & switches from different rooms on one circuit. What I did was typed up a sheet laying out each breaker as shown in the panel and listed each outlet, switch, etc, placed it in a sheet protector and taped it to the outside of the panel.
That is what I have done. A complete list of each breaker and what outlets/circuits/routes it services. The text for the list is on my computer and can be updated, printed out if and when it changes.
Oohhh: That perfectly organized loom of wiring in the circuit panel was VERY satisfying. I noticed and commented at a friend's house that all of her cover plates' screws were all perfectly aligned vertically, and she then showed me her circuit panel - it was just like this one. I try, but I can never seem to get them this neat and organized. Thank you for that gratifying picture.
Lol. I've always aligned all my finish/trim plates in a vertical position. Can't tell you how many times I've had customers say nobody was in that box or touched that device when I've seen that the screws weren't in the position I left them in. I got that from the James Bond movie Dr. No. Bond plucks out one of his hairs, licks it and places it across the closet doors. To verify that someone had messed with his stuff!!!
Too neatly bundled wires have a risk to overheat
Nils, this is a great video. As someone who inspects electrical panels almost every day, the basic knowledge you gave for DIYers and homeowners is great. Your tip on what is referred to as "double tapping" of hot wires to the same breaker is so beneficial.
Thanks, Mitch! I bet you have some horror stories about things you've seen. I remember your case of recently dealing with the steel beams that had to be undone with all of the rocks on top and I can only imagine what you see on a day to day basis!
With LED lights being so low voltage and amps would double-tapping lighting circuits be fine? other than the inconvenience of having 2 rooms off when needing to do any repairs?
@@jetah50 The reason double tapping is dangerous is because when two wires are installed on the same tap, there is always a chance of one of the wires becoming loose, which then can cause arching. The copper metal can expand and contract at different rates, depending on their use and load, thus allowing movement that will cause one of the wires to become loose.
@@jetah50 For most normal-sized rooms/bedrooms lighting will never cause significant heating of the wires. With modern LED lighting running upwards of 100 lumens/watt a 15A circuit can supply about 130,000 lumens (~80 100-watt lightbulbs equivalent light) worth of light. Running two rooms' worth of light-only circuits is fine. But, it may be preferable to install a tandem 15A breaker to maintain independent supply to each room at a cost of about $10 more for a tandem vs standard. Personally what I prefer when dealing with small breaker pannels is using a 15A/20A tandem breaker for each individual room for lighting and outlets (except the bathroom and kitchen), each room has its own breaker and each function has its own circuit.
My grandfather was an electrician from the 1930s - 1970s. NOTHING on earth pissed him off more than no or wrong labeling in a panel! (it's even WORSE in a commercial setting!) I have religiously labeled mine and relabeled ones in places I rented. This is easiest on day one BEFORE you set up your furniture, so you can check every outlet! Fun fact: When my grandfather had HIS house built (Early 1950s) He wired all of the branch circuits with #12AWG, even on the circuit that were fused at 15 Amps! Then again,, he was a man to changes his car's oil more often than what the manual said to. Not one to take chances! 👍😊👍
I had to sort through my panel and make a descriptive and detailed list. I'm also writing breaker number on back side of cover plates with a sharpie.
So... He just liked to waste money.
@@therightiswrong4517 90% Commercial, 10% Residential.
Thanks for the video. We had an upgrade from 100 AMP to 200 AMP in 1989. What a mess. The electricians replacing the panel did an excellent job. Very tidy but I found a few shortcuts hidden by the original owner as I completed other renos.
Great job on that project. I really like how you kept it original with the original paint.
Just had a new 200A panel installed. The inspector checked the torque on every fastener in the panel and also checked the backing nuts were tight on all the connectors. Checked wire size matched the breaker size. Then outside the panel, he checked the set screws were tight on on every EMT connector in sight. Very thorough inspection, glad I had an electrician who knew the inspector and what he would be looking for so that there weren't any rejections.
Damn that inspector has a Napoleon complex. I'm a master electrician with 40 years of experience, I've wired over 1500 panels. Residential, commercial, industrial, Marine and even federal government work never seen any inspector check ft lbs or in lbs of torque.
He just checked minimum torque, I bet, so not Napoleon sociopath. NapoleonEC, check for too much torque!
For DIYers: if you need to replace a circuit breaker, bring the old one to the store so they can help you find the appropriate replacement. If you haven't removed it yet, take a close-up picture of the breaker and the box label. Boxes only accept compatible breakers, and even some brands have different boxes.
YOU must replace a home line with same or a bryant with same or seimens breaker with same U CAN'T MIX BREAKER MANUFACTURES NOPE!!!!!!!
I worked at Lowe's and saw some pretty gnarly pics of hacks that people did to their panels. If it takes a saw or a hammer to put the new breaker in, you have the wrong breaker. "Call this guy. He is an electrician. He will get your problem fixed without you dying"
A clear and informative video. Also the presenter straight up emanates nice person energy, best wishes for this youtube channel and everything else!
Thanks very much for your carefully descriptive video. As a DIY I have done sporadic amounts of outlet and circuit breaker box wiring in the home and shop but need reminders about how things should be done.
13:00 The electrician who installed my new panel also made it look like a work of art, it is beautiful to look at, he also put in three spare circuit breakers for any future expansion.
Wow! That’s impressive for sure. Gotta love a great tradesman like that.
@@LRN2DIY As impressive as the quality work was the fact that my job was done in three days from when I called him. he showed up the very next day, surveyed the work gave me an estimate on the spot. The next day he had completed all the paperwork for the permit and went with me to the city planning department where he asked to go back and talk to one of the city engineers while I drove the mile or so home. About 30 minutes later he drove up with permit in hand and went to work. My job was finished by the end of the day.
@@wayneyadams Wow again! Give that man more business :) Sounds like a total go getter and someone who goes above and beyond in all things. We need more of him around!
I NEED to hire this electrician. I have two houses needing total re-wiring. Small 20’s 2-bedroom bungalow Large 70’s 5-bedroom ranch house Deep-South-Texas. Does he make house calls? 🙏
7:14 most load center manufacturers, like Square D we see here, are OK with doubling up grounding (ground) conductors per grounding buss hole. While NEC doesn't seem to explicitly allow it, NEC doesn't explicitly disallow it either. The reasoning is that the grounding conductor is only meant to carry fault current and should not experience the heat/expansion cycles like that of a current carrying conductor like the grounded (neutral) conductor. Though in your case, it looks like you have more than enough terminal spaces on your ground buss and the previous installer really didn't need to resort to doubling up grounding conductors like that. But overall, agreed with the sentiment regarding Neutrals, NEC 408.21 forbids double tapping grounded (neutral) connections at the buss termination.
I came here to say the same.
I'm glad I found your chanal; it's a big help to this DIYer. Thank you for sharing your knowledge!
Mistake #3.5 @ 3:55 - do not turn away from the panel to face the camera while waving your hand near the live connections :)
I could feel my blood pressure rise everytime.
The problem with doing this and several other instances of near-misses is that it conveys to the novice that working with electricity is no big deal. Never once did he stress the critical importance of not touching live circuits within the panel. I'm afraid that this video would encourage the uninitiated do-it-yourself home handyman that safety can be taken lightly.
I made that mistake once, there was no exposed wiring but I tripped a few beakers that required a maintenance guy to go on the roof of the building to reset something.
How would you feel if in a gun video the instructor was pointing the empty gun at his head and pulling the trigger, knowing that the gun was empty. That's what prodding the wires is in this video. Instant "Do not recommend channel"
It's switched off. He says this near the end. Granted he should have mentioned it near the beginning that the entire breaker is non-operational.
One thing I wish all manufacturers would do is put two hooks on the top holes to hold the panel cover. Siemens is the only one (in our area) that does that. Good info for those that dont know.
Whts nice in some with dead fronts especially in commercial the door hooks r great I love them design a open the door fully lift uphill out. Then four screws to dead front to the holding brackets n thts it. Weight is much less also
One of my journeymen at work introduced me to what he calls "panel buddies". We take two long quarter 20 screws and cut off the head, then screw them partway into the top corners of a panel, or any kind of can really, and then hang the cover on it while we tap the rest of the holes if they're not present, or just use it to hold the panel in place while we drive the other screws. Then pull them out at the end and place the last 2 screws
@@OutageousVibes360 What????????
Some do.
Way back I apprenticed for a couple of years before changing careers and have always done my own electrical since, and one common thing I've seen.... most (not all) of the worst electrical work I've seen has come from licensed guys, in a hurry to make those profits. Most diy's are somewhat paranoid so they research to death then generally take the extra steps.
Thoroughly explained and highly informative-thanks for the excellent video.
M.E. here. Nice video, well explained. I got a chuckle out of the clean organized panel you showed at the end. I LOVE clean work, THAT'S the guy I want on my crew or doing service calls. But then I looked closer, and saw the circuit wires labeled in numerical order from top left down, then top right down, rather than odd circuits left, even circuits right. I know this was probably from the pull, labeling the romex as each home run was pulled to their location - but then you need to have a pull drawing to know exactly where everything went, if their numbering isn't going to match the panel cover. Hardly the end of the world, just gave me a little chuckle. It's the little things, sometimes. 🙂
A good little trick when roughing in a residential panel is to cut off a 2" piece of romex sleeve and slide it over the homerun hot conductor as you land the wire this also cuts down any confusion which wire controls what circuit. Plus it saves time when labeling the panel!
Overall a good video. A couple of comments - Multiple wires into a single hole on a buss bar is allowed if its the ground bus bar and is rated for it. Some are rated for 1@ #10, 2 @ #12, 2 @ #14. Neutrals by code must each have their own. - If you're able to calculate loads on each circuit, as much as possible balance the load on the panel. The panel is made to kind of do that, but may not have had the loads applied appropriately for the large load devices, especially when DIYers add things. Balancing the expected loads makes power use more efficient. Unbalanced loads can actually wind up costing more in electrical bills. Safety wise, balancing the loads means the neutral can remain neutral. When the loads aren't balanced, the neutral will start to carry voltage/current, and that can cause dangerous conditions within your home.
Excellent comments EXCEPT that you failed to explain what you mean by "balancing the expected loads". You should explain the two halves of a typical 240V split-phase panel. Then it will be possible to explain balancing the loads between them. I'd also point out that when the panel cover is removed and there are some unused circuit breaker locations (or if you remove a few CBs), one can see the "interlaced fingers" of the two hot bars, allowing one to understand how to easily balance loads without complex wiring. I hope this helps anyone confused by your CORRECT, but somewhat confusing, phraseology.
@@SFFrog I figured people would search KZhead for appropriate videos. It really takes more than can be contained in a comment. And although 120/240 is the most common used in residences, some are 208Y/120. Best to leave people to find full instructions.
You're probably thinking about the ground wire. The neutral wire is designed to carry current, otherwise you wouldn't be able to switch off any load in your house. And that is if the panel is wired in a way that creates a perfect balanced combined load within the two phases. Most cases aren't.
@@VMFRD Nope, the neutral. Neutral is the pinion of a see-saw. When the loads are perfectly balanced, the neutral carries no load. However, in practice that isn't the case, so the neutral carries the imbalance back to the common point on the transformer to complete the circuit. A great example of this is that the neutral on a 3-phase feed to a device isn't 3 conductors, nor is it a wire rated for 3x the current. Only when you're feeding something which may be operated with the phases not always in balance is the neutral oversized (sometimes doubled).
@@l00k4tstuff Well you have just re-write my comment with a more detailed explanation. So where is the part that carrying current through neutral is dangerous? Only if you exceed the rated current for the neutral conductor you're in a problematic situation.
Excellent video. Im a homeowner and occasionally will make a simple repair but call in the electrician for real repair needs. About 9 years ago I had the overhead line running to my house replaced with an underground line to my house through a transfer switch and a new pole for my meter with a new meter box with 3 power legs and it's own shutoff switch. And the inspector was able to inspect it the same day the work was completed. Best upgrade this house had in years.
What do you call "real repair needs"? Do you know that 5 ma will.kill you?
This was an excellent presentation! thank you!
After just one minute and fifteen seconds, was something I didn't know. Thank you!
Great video, but in the section covering torquing the wire connections on the breakers you should have noted that the screw lugs on the circuit breakers installed in the breaker panel are hot unless they are switched off or the main panel breaker is switched off. Likewise, a statement should be included that the lugs with the allen wrench style wire clamps on the transformer side of the main disconnect breaker are always hot and should be avoided (they should also have insulating covers on them per code, but I've never seen a panel in use that had them). The lugs on the other side of the main breaker are hot if the breaker is on.
Line side lug covers only starred being used in residential panels approximately 10 years ago.
What brings you to this video? Just critiquing? You don't seem to need this information, huh?
This is more personal preference, but I always double stripe my wires when recoding them. Too many times I’ll see what seems like half a roll of electrical tape just to recode a wire. As a point of safety, I always remove the tape to make sure someone wasn’t trying to hide damaged insulation (seen it more often than not). By using a SMALL amount of tape to make two stripes close together, it clearly recodes the wire without making it look like a repair.
But that doesn’t satisfy code. If you don’t want to cover the conductor in tape you can make 3 lines the entire length of the conductor with a sharpie.
As a master electrician in Wisconsin, we are required to re-color the entire length of the white branch circuit conductor from the point of entry into the panel if that conductor is being used as a hot. This can be accomplished by use of a permanent marker or electrical tape. Following phase color is important but not required, just as long as the color is not white if the conductor is used as a hot.
The NEC from when I was still doing electrical said at least 2 inches of wire completely covering the end. I would wrap black, red, purple, or green (sometimes people used white as a ground?) before stripping the end of the wire so that the tape color was what you say when you checked the breakers.
Excellent information. Thanks! I agree with the beautifully wired panel: That's what I want to see in my home & barn!!
When you showed the grounding wire coiled with a line going through it, it reminded me of what someone described to me years ago - the coil was creating a magnetic field and running a line through it caused all kinds of weirdness.
Torquing the screws is the only one of these that have gotten me. We were in a new build home about 2 years and a screw came loose on a breaker. The wire pulled out and shut off the circuit. Of course this only happened to one circuit - the furnace, in Minnesota, mid winter. Probably about midnight. About 2:30 or 3 I woke up due to the cold and realize the furnace wasn't running, but we have power to the house... Not fun chasing problems half asleep and with a sense of urgency. Found it after a few minutes and got everything working again. One of my best examples of "Murphy's Law" - wouldn't happen to an unimportant circuit on a warm sunny summer afternoon. Noooo, of course not...
I have to laugh because I've been there but man, that stinks. Our issue was with the A/C in mid July, also middle of the night. Darn that Murphy! At the same time it's a great testament to checking in on those lugs once in a while - could save a lot of trouble. I'm a believer! Thanks for sharing that experience too.
@@LRN2DIY These are the kinds of things that only have to happen to you once to convert you to a believer. I'll probably invest in one of those torque-controlled screwdrivers. Maybe add this to my once-a-year preventative maintenance list. I thought I was just unlucky, I didn't realize this is a thing. These kind of reminders are things that Google Calendar is great at setting up and reminding you. Hey, that's an idea for you - maybe you already have it on your website (I haven't looked). How about a preventative maintenance list for new homeowners - furnace filters, smoke detector batteries, HVAC service, water heater service, sprinkler systems, etc. All the things you want to plug into your favorite calendar app.
@@philipstaite4775 I love it, Phillip. I have thought about doing a video like this for a while and still might. Gotta love those easy recurring calendar appointments too. I use that now for filter swapping and a few others. Technology FTW!
Having had an arc fire in my electric furnace due to the lug coming loose, I now check the tightness of all the screws in the furnace (83 Amps x 240V) and all the connections in the breaker panel every autumn.
That's a great practice to be sure. Not a fun way to learn about that but at least you're staying on top of it now.
I'm not an electrician; I just get called to fix their mistakes 😁. Was mildly curious about your video that popped up, so skimmed through - VERY impressive. Simple explanations packed with clear info, no fluff. If I were JUST a stupid homeowner, I'd think I could rewire my house after seeing your videos!
Fantastic video. I don't have time to read all the comments but the ones that are saying, mistake number 11 is pointing at the box and such. Not quite sure if anybody noticed but he obviously took things apart wired them up the wrong way so that we can see the wrong way then put them back the correct way. He talks about code in several different scenarios. And he's running a sub box I'm pretty sure this guy knows what he's talking about. The video is very well composed very straightforward, well rehearsed, and like I said he took the time to write on the electrical panel labels the wrong information, rewrite them in some other language or gibberish, then put good labels on there. He wired up scenarios where two wires are in one circuit, he wired up the grounds to look incorrect without a wire nut or with a pigtail, and then corrected all of these to make them look the way that they're supposed to be to code. Great job great video and at the very least even if you don't want to touch your electrical box you can at least inspect it with your eyes and see if there's something wrong and call electrician.
No, you don't test to see if there is no current running through them. 0:37 / 13:54. You test for voltage.
Thanks for the heads up on that. I'm always looking to correct my vocab - it's one of the things I kinda suck at :)
Thank you. I'll let professionals handle this if I ever need it. 😉
Always a safe choice, Will. I love working with this stuff but it's best to call a pro if you're at all unsure. Thanks for watching, brother!
Thanks, My main breaker is located outside and the panel inside was evidently modified into a sub panel by removing the main breaker. This left a hole in the front of the main panel. I knew it was unsafe, so I covered it with duct tape. I also knew this wasn't the right way, but it was "safer" than leaving it open. Now I know what is needed to fill that hole.
Great points. Thank you for getting the word out.
Mislabeling was definitely a big point of frustration for me when we bought our home. It took more than half a day to trace out every receptacle and light. Fast forward a few years to last year and we decided to add rooftop solar system and upgrade the 150 amp panel to a 200 amp Span smart panel (already had 200 amp service to the box). Unfortunately, the solar installers did not follow my labeling scheme so I had to go about relabeling everything all over again. 😭 On the bright side, it was a lot easier with the Span panel as I just went from receptacle to receptacle with a high-draw appliance (hair iron), plug it in, and watch the usage spike on the correct circuit in my Span app. I was shocked that Span doesn't offer some sort of tracing device that can of into the receptacle and have the panel itself label it as you go.
Oh man - sorry to hear you had to redo that. To your point, the Span must have made things much easier. I have looked into getting a Span but it definitely seems to make more sense if you have a battery backup and I don't. I'm excited to see where all that tech leads to in the future too. Thanks for watching!
I've been going a step further with my recent renos, in addition to labelling the panel. Brother makes a tiny 1/8" label tape for their P-Touch printers that I use to label all my receptacles with the associated breaker. It's so small that it doesn't really affect the look of the wall plates if I tuck it right in the corner. Any new work or rework gets a label inside the box too. Takes very little additional time, and it's a nice gift to future me when I need to find a breaker quickly.
I had one "open hole" in my breaker panel. I just put a breaker in it. Could come in handy one day if I decide to run a new circuit. LOL.
Great content, efficient presented and easy to listen to. Outstanding!
I have to agree, a well laid out wired panel, is a joy to see.
First, IF this video includes any information that you didn't already know, I recommend that you DON'T remove your panel cover unless you are at least an apprentice with basic knowledge of how to work safely in a hot enclosure. All the extra tips in the comments are important. You could never include everything in one video. That is why Electricians get 4 years of training before they are eligible to test for a journeyman license. Anyone who skips the training is putting himself at risk. He could also be putting his family at risk. I have recently noticed that many younger electricians/apprentices don't always know the difference between a simple mistake and a fire hazard. Some of the minor mistakes they think could burn a house down makes me wonder if they would recognize a real fire hazard if they saw one. Then there are the electrocution hazards. Many people would be surprised to know what is most likely to cause electrocution (death caused by electrical shock) in a house. Some people might disagree, but a DIYer with no electrical training and little knowledge should not remove the breaker panel cover. Anyone who thinks it's okay for someone without a good understanding of electrical theory or at least some supervised, educational experience working on residential electrical system including some knowledge of practical wiring methods to make changes or upgrades inside a breaker panel is just wrong. However, every person is the first and last person responsible for his/her own safety. So we all must dictate our own actions and live with the results or die from them.
on #2 the main breaker can handle one 100% of the calculated load. Only continuous loads are at 125% that's factored in when you do the load calculation for those individual Branch circuits. There's even demand factors that can lower the main breaker size. (Applies only to certain types of loads)
I agree that #2 is flawed. Main breakers are generally not designed for continuous loading, which mans that they cannot accept the full rated current for three hours or more. All circuit breakers will allow the full rated current to safely pass, just not for three hours or more.
OH my. That panel at 13:00 is a work of art!!
Safety is the extra millage that saves troubles and even lifes. One time i was installing a fixture , being too lazy to reach the breaker i short-circuit the wires with a screwdriver , a spark resulted in a small ball of burning copper that landed on the sink causing a spot . Good video.
2 or 3 grounds of the same size under one screw is actually ok for most panels and jurisdictions (the panel should tell you how many it will support). But only one neutral per screw.
Another issue!! You should ALWAYS tap the cover with the BACK of your hand BEFORE doing any work inside the box. Including resetting a breaker. An electrician friend got severely electrocuted because there was voltage on the box itself. Using the back of the hand is a lot safer than your palm.
This should start a firestorm of opinions, but in keeping with your theme I'll add this. When I was very young and learning so many things from my late Dad, I was told when doing panel box work/inspection (especially unfamiliar ones) to "keep your other hand in your pocket". The premise being if you would come into contact with a 'hot' surface it would minimize/reduce (note: not eliminate!) the chance of a fatal electrocution by making the current path through your body from the hand in use down one side of the body rather than traveling across your chest if your other hand is in contact with an earth ground (usually panel box frame). As electricity will take the path of least resistance, it would almost certainly travel from one hand to the other crossing the heart area. While perhaps not always the most practical in all instances, I've found it a good rule of thumb. Even when checking voltages I'll use an alligator clip lead for the ground and work the other test probe with one hand. Panel boxes are especially hazardous because of the 'mains' leads connectors; main breaker and 'hot' buss bars. It's pretty much like climbing up the pole to the transformer secondaries so far as power factor and shut-off ability. Totally unrelated, but I'll add anyway. The other adage that's stayed with me as long as I can remember pertained to cross streets and parking lots. He'd point to a car and say "Those are headlights. They're not eyes. That automobile can't see you." Must admit I was a child in the days of round sealed beams, but still made me think and probably kept my sorry self from possibly being a statistic.
Excellent video!! Clear, concise and to the point. I also noticed that you used one of those plug-in items for a socket. Speaking only for myself it would really be helpful if you could do a video on reading the indicator lights and what actions might be taken when applying the readings one gets. Just a thought......
Excellent video. Clear well spoken very understandable English. Very easy and understandable to follow. You would make good trade school instructor. Thanks
Always read the specs on your load center before doing things. Square D allows two wires to be placed in the holes on the neutral or ground bars. They need to be 12 gauge at the max and need to be paired with the same size wire. Yes one wire is ideal but if done properly it is ok. Also know how many breakers you load center can handle, you can put twin breakers anywhere in a Homeline series but a QO series has different rules. Older QOs could have twins anywhere, newer QOs can only have twins on the bottom five spaces on each side, and the newest QOs are being recommended to not use twins at all. Its all in the part number, a HOM4080 has 40 spaces but can have 80 circuits if filled with twins. The sticker on the inside of the door will tell you everything you need to know from spaces to acceptable breaker replacements and parts. Also most loadcenters use generic covers/doors just because you open the door and see two spaces left to knockout to add a circuit doesn't mean that you have two available slots on the bus.
Most codes stipulate just one neutral wire per hole; the QO and other brands may allow two Ground wires, only of the same diameter (2-12, 2-14). Code always takes precedence over a mfg. specs, and also usually demands just one wire per breaker, regardless of the stamped spec. A legal option is to pigtail more than one hot, and only put one into the breaker - cannot mix 14 with 20 ga. if going to a 15A. breaker. Our 50 year old home has had a lot of lighting added, and it feels tricky that so many branches all tie to one or two early "lighting" circuits, yet in practice especially as more LEDs are used, the amperage load on these do not get high as many lights are not on at once. A kitchen circuit might have a toaster, blender, mixer, radio, on at once, adding up for a couple hours at a time - where balancing loads as a concept enters, so phases offset and reduce a high return load on a single neutral. Making older wiring safer, yet not up to modern codes, can be a tricky art.
I am by far no expert who can give advice, but the scariest thing i ever saw in an old friend's basement was that he had disconnected all of his ground wires from the actual ground and wrapped them around a nail he put in one of the wodden floor joists. His reasoning was that "you're always told to not stand under a tree during a thunderstorm because it's such a great conductor... therefore there is no better conductor for grounding electric than wood. "
😂😂😂that’s about the equivalent of bonding a pvc plumbing pipe because water is a good conductor
I hope you're joking
I'm not joking one bit. Fortunately no one got electrocuted (although I would always get a slight buzz if I touched a screw on the bathroom light switch). Fortunately, he got a big wake-up call when he went to sell the house, and the inspector flipped out.
That lightning just jumped a few thousand feet through AIR, which isn't a great conductor...
I created my own breaker labels using Microsoft office. I then printed it out, laminated it, and used magnets to attach it to the breaker box door (so I can update and change it easily). It's really easy to do and far better than the stickers you buy.
I was trying to change an outlet a while back, upgrading to the deco style and couldn't find the right breaker. I kept turning off the breakers one at a time but it never lost power. Turns out one 15a breaker was connected to the top, and one 15a was connected to the bottom but the previous installer forgot to break the jumper lug. Gotta love the pros the new home builders use now a days. It should be noted I'm a DIYer who has done lots of electrical work but I won't touch a panel. Don't do flooring either, lol.
For an air conditioning or heat pump, a larger CB is needed to handle the inrush current than what is needed to handle the continuous current.
The name-plate rating takes into account in-rush current, which is why using the name-plate data is critical. Also, CB ratings take into account inductive in-rush current.
I would like to add putting fiberglass insulation inside of the panel. I found that 2 weeks ago at my shop when I was adding a new circuit. Apparently the old owners were worried about the little bit of air coming in through the service line entrance so they risked a huge fire hazard instead.
Wow - that's pretty crazy that they did that. Super dangerous stuff. Glad you found it and took care of it!
fiberglass doesn't burn so what is the issue unless the breakers need ventilation
@@JamesAnderson-mr2sg Current generates heat in wiring and conductors, so ventilation is key. Even subtle overheating issues can lead to loose connections.
@@usernameerikhoover i did mention ventilation in my comment
Thank you for this explanation
I never knew about that circuit breaker finder tool...definitely adding it to my list to buy. I'm always trying to figure out what breaker goes with what. THANKS!
I have used several different circuit breaker finders, including the KLEIN model shown in this video and have found them to be quite unreliable, particularly in older homes
@@frankrossi1767good to know. My home was built in 73 so maybe they wouldn’t be too reliable for me
Put the red tape on BOTH ends. I've got a miss-wiring here with the white being L2. Hooked up a 5-15 type outlet. The tester said something was wrong. I didn't know what right away..
If you're using a three light tester and all three lights are lit, usually one brighter than the other two, you've found the problem, the receptacle was mistakenly connected to 240V.
Reaching into the panel - no gloves, no eye protection, no frisk - gives me the jeebies.
C'mon dude sprout a pair!! Homeowners yes. But a pro shouldn't have any issues working a live panel. With proper knowledge and training it's electric 101
The way he speaks…is between layman/idiot and very knowledgeable. It never feels over your head, AND he CALLS out areas for complete ignorance or rookie mistakes! 😃 New Subscriber. 🥳 Thanks!
great video.I'm looking forward to your video on adding sub-boxes. There's one here now with four 20 amp glass fuses "protecting" more than 1/2 this house(basement,rec room addition,and kitchen appliances)
Nice explanation. But never, never put your hands or fingers in the panel unless everyone knows it is shut down. Not sure you commented on that
Unless the code has changed in recent years, the ground wires are allowed to be two to a hole in the bars, provided they are the same gauge. This is easily verified by looking at the chart on the door that specifies wire sizes per terminal, torques, approved breakers, etc.
You're correct. It's not allowed for neutrals but is permissible for ground. A lot of folks shy away from it because it is believed to increase the likelihood of one of the wires becoming loose.
@@LRN2DIY when playing with power its better to be safe than sorry.
It's only allowed if the panel is listed to allow it. It's not automatic.
Or just buy another bar
Even 3 on cutler hammer. You can find the info on the panel door
Thanks so much. I never knew that the panel connects the two ground bus bars. I was always wondering though about why most panels do not have two common bars to make wiring on each side easier.
Great overview. Thank you for sharing your knowledge.
Idk if I’m gonna trust a guy who doesn’t know different between current and voltage because if you don’t have anything plugged in…even if the plug is active there won’t be current following because it’s an open circuit beyond that point.
As an apprentice I loved wiring panels to look like that beautiful example. However, the Master Electrician who trained me said I was taking too long and it really wasn’t necessary. We split the difference. 😊
Great instructions! Well done! I learned a lot!
Clear and concise ! Thank you!
Tip: put a floor plan of the house/building next to the panel. Don't just label the circuits, _show_ them!
so whose amending the floor plan when something is added? as built plans are like hens teeth
@@harveylong5878 They're easier to keep current, than you might think.
DIYing electrical issues is one of the few things I leave to a trained electrician outside of flipping the breaker.
As an English Journeyman Electrician it is really fun working with 240v single phase on a 30 amp ring main. 2.5mm cable comes out of the breaker circum navigates the house then the far end goes back into the same breaker, Servicing 13 amp mostly dual switched outlets available for 3 pin plugs each with its own fuse. 1 breaker for downstairs and 1 breaker for upstairs. Water heaters, cookers, etc have their own breaker. The I.E.E. Regulations are very interesting.
Do you blokes still install new ring mains? This seems like such a bad idea, and should have gone away a long time ago. Is it really worth the risk for the small amount of wire it might save? It seems to me, from this side of the pond, that it would be far safer to use a larger panel (consumer unit?), break the ring, and put each leg on its own breaker. What are the advantages of a ring main in 2024? A ring main and a homeowner DIYer seems a deadly combination.
Just a note of interest. In europe, terminals are filled not a single wire, voltage is 240 no 120. I have found that a single wire can be cut if over torqued and the wire can be found to move to the side of the screw so the threads cut into the wire and not the end of the screw. I bend the solid wire over you find it fills the terminal and makes a better secure connection.