Current carrying conductors in the 2020 NEC

This video discusses which conductors must be counted as current-carrying and gives examples of when that matters.

[dane]

Thank you for you hard work Ryan! When I want to know broad code I go to mike holt when I want to excel in specific codes I go to your Chanel every time!

[billytheweasel]

Thank you for doing these and making them available. Subscribed.

[johnmiller]

Wow this chanel is awesome. Thanks Ryan! Why are there so few subscribers?

[davidsullivan]

Ryan this was extremely helpful for me today. Thanks for sharing your knowledge and expertise.

[phill]

I had the pleasure of listening to your lecture at Griffen Electric awesome presentation with real world pictures thank you.

[jclelectricalcorp]

Your videos should be used for Electrical Contractors continue education all over the country, very good, thank you.

[tffd]

I have brought up the exception with the state of Wisconsin regarding 376 and the exception in 310.15 in the past. They did not allow the exception to be used in the (more stringent) rule of 376 to 30 ccc. I started another email with the link to your video to get this talked about again within Wisconsin Dsps. I personally believe the exception allows for 31 current carrying conductors to have no ampacity adjustment as long as the exception rules meets the requirements of such conductors. This in regards to 16:15 in your video. Thanks Ryan! Hopefully Wisconsin will see this until then we will not be able to put up a wireway above a panel

[roflmaopwnsurface]

love your channel watch everything you put out. on that note. the 4 gang box make up you were using as an example looks to be that the red wire in the 3 wire cable IS in fact not a 3 way but more likely a switched outlet or a fan so that being said that wire would still count. Keep up the great work!

[marcusreed]

Thanks The way you put everything was easy to understand and helped me understand bundling, CCC and cross sections

[jasonhaggerton]

Ryan; You the man! Loving your videos.

[Cristian-hwqk]

Thank you much for what you are doing. It helps me a lot to understand.

[JesusCruz-wtzp]

Thanks for this great video... would you please do a video, how size the ground wire in a circuit..

[wellcraft]

At 16:15 the amperage on the 12/2 NM cables is initially stated as, "regular ampacity is 30A". However, NEC 334.80 limits the ampacity for type NM cable to 60*C, which is 20A, and even with the caveat that regardless of "ampacity and adjustment calculations...the final derated ampacity does not exceed that of a 60*C rated conductor", it is still 20A. So the starting basis for the bundling adjustment appears to be incorrect. The same calculation would yield an adjusted ampacity of 8A. Which would be quite sufficient if the typical branch circuit load is all residential style LED recessed lighting. If I have missed something please let me know. :)

[AaronSchmid]

6:30 That wire nut on the grounds is way overloaded LUL ;) max 6 #14. 6:30

all jokes aside.. thanks for the informative vids as always!

[carultch]

Is there a quantifiable way to determine if a load is considered linear vs nonlinear? Such as a harmonic distortion percentage, or something in particular to look for on an oscilloscope? Because it seems like by strict definition, all loads other than incandescent lighting and ohmic heating, are nonlinear to some extent, even if the harmonics are minimal.

[duanelohr]

Dude, winner video. The nec went insane in the 2000 to now time frame and I believe the authors are finally saying enuff.
On a different subject, you mentioned a high leg system, which I equate to 120/120/220v power. The weirdness that is electricity is if you connect a two pole breaker between a 120 phase and the 220 phase you get an output of 207v. How??? I have asked senior electricians and electrical engineers for years how this works and no answer. Could you explain it? I would really appreciate it.

[larrydoss]

I respect your advice moreso than most NEC code guys, however, (there is always a however, huh?) you say at the beginning that if you are in an older than 2011 codebook we need to get a newer one. I love that, and I agree to that, but in Indiana (where I live) we still test in the 2008 codebook and have to refer to Indiana amendments. it seems to me that every state should always be up to date with the latest codebook within 6 months of any new publication. I am old school when it comes to many things that I feel is better, such as using rigid conduit and EMT for residential. It is better in many ways, but the code allows for NM cable, etc. I have seen so many homes done very sloppy with NM cable which leads me to believe that when they came out with NM cable, more homeowners did the work instead of licensed and/or experienced Electricians. That in itself is very dangerous! Nothing in this world (rules or no rules) will change that in the future from happening. Not saying DIY'ers are all bad, but just watching a video doesn't account for everything in a proper manner. Anyway, Ryan, I enjoy your videos and I appreciate your efforts in keeping us all updated. Continuing education is, and will always be, the best way to keep those of us who want to be up-to-date with knowledge where we prefer tp be. God bless you and keep up the great work. You are very appreciated . Just wish the states would be the same across the nation. Can you, if you can, please put out a video to help us understand why every state doesn't want to comply the same so there is a standard we all need to comply with? I think that we may all be surprised by what we may learn from your knowledge on this subject.

[ronaldkovacs]

Is ampacity adjustment required if two cables pass through the same hole in a wooden stud, assuming that the two cable are not otherwise bundled?

[timflory]

Can ANYTHING in the LINE side of a GFCI receptacle cause it to trip? NOTHING connected to the load side. I've had 3 different receptacles connected to this circuit. It is a home run to breaker panel.

[BädelAndre]

How do I size a pull can that requires a 4 inch emt that's used for data cable..
I don't have the category or type yet..

I understand the OD part and circular mills but I've only used circular mills on regular 120v through 480v.

If I have a given number EX. 100 category 5 / 4 pair type utp..
I've been reading that cat 5 dosnt like more than 25 lbs of tension..

How can I size a pull can and what equation is need..