This video discusses which conductors must be counted as current-carrying and gives examples of when that matters.
Пікірлер: 68
@dane51674 жыл бұрын
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!
@RyanJacksonElectrical4 жыл бұрын
Thanks Dan!
@billytheweasel3 жыл бұрын
Thank you for doing these and making them available. Subscribed.
@davidsullivan77392 жыл бұрын
Ryan this was extremely helpful for me today. Thanks for sharing your knowledge and expertise.
@phill92382 жыл бұрын
I had the pleasure of listening to your lecture at Griffen Electric awesome presentation with real world pictures thank you.
@johnmiller64033 жыл бұрын
Wow this chanel is awesome. Thanks Ryan! Why are there so few subscribers?
@RyanJacksonElectrical3 жыл бұрын
I probably need to post more often and more predictably. My schedule is just really crazy right now.
@jasonhaggerton3 жыл бұрын
Ryan; You the man! Loving your videos.
@marcusreed84322 жыл бұрын
Thanks The way you put everything was easy to understand and helped me understand bundling,CCC and cross sections
@roflmaopwnsurface4 жыл бұрын
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!
@RyanJacksonElectrical4 жыл бұрын
I don't remember, I took the pic a long time ago.
@jclelectricalcorp89663 жыл бұрын
Your videos should be used for Electrical Contractors continue education all over the country, very good, thank you.
@RyanJacksonElectrical3 жыл бұрын
Thanks!
@tffd304 жыл бұрын
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
@tffd304 жыл бұрын
310.14 (A)(2) exception in 2020 code. We are still on 2017 actually just started
@RyanJacksonElectrical4 жыл бұрын
Go over their head. They are 100 percent incorrect.
@thomasdupre4724 жыл бұрын
Thanks, Mr. Jackson.
@Cristian-hw1qk2 жыл бұрын
Thank you sooooo much for what you are doing. It helps me a lot to understand.
@RyanJacksonElectrical2 жыл бұрын
You're so welcome!
@jj51533 жыл бұрын
Thanks for making and posting the educational videos Ryan. Will you be making videos for purchase. I’ve purchased previous DVDs from Mike Holt and have seen you on his panel.
@RyanJacksonElectrical3 жыл бұрын
I don't know, I haven't thought too much about it yet. I appreciate your interest though!
@steve-o64133 жыл бұрын
Excellent presentation, Ty...
@sald54093 жыл бұрын
Thanks for the education on the code.
@christiansantos89043 жыл бұрын
Badass, thanks man
@JesusCruz-wt2zp3 жыл бұрын
Thanks for this great video... would you please do a video, how size the ground wire in a circuit..
@besafe9 Жыл бұрын
Great video.
@AaronSchmid14 жыл бұрын
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!
@TodoInventosTV2 ай бұрын
Muy bien gracias
@freiky265972 жыл бұрын
Nice video master
@carultch3 жыл бұрын
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.
@RyanJacksonElectrical3 жыл бұрын
I agree, it isn't perfectly defined. With today's equipment the total harmonic distrortion on a given circuit is so much less than in years past, I can't help wonder if it is a "real" issue (as it relates to counting the neutral).
@mechelb41583 жыл бұрын
Amazing
@markveblungsnes3 жыл бұрын
Well done
@Spacegoat214 жыл бұрын
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..
@carultch3 жыл бұрын
Circular mils is a measure of how much metal is in the wire. You need the area of both the metal and non-metal. Use the overall OD of the cable. If the cable is non-circular, the largest OD is what matters, as if the entire cable filled a circle equal in diameter to the cable's largest OD. Calculate the corresponding area via A = pi*OD^2/4 for each cable. Add it up. That is what gets limited to generally 40% of the raceway area. This applies for feeders, branch circuits, service conductors, and data cable conduits.
@duanelohr18693 жыл бұрын
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.
@RyanJacksonElectrical3 жыл бұрын
Thanks for the compliment. I show a high-leg at about 11:15 into this video, which explains the voltages kzfaq.info/get/bejne/hZNhhpxk3LeyZYU.html
@wellcraft21363 жыл бұрын
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. :)
@RyanJacksonElectrical3 жыл бұрын
Ampacity adjustment and temperature correction are always based on the actual ampacity. See 334.80.
@wellcraft21363 жыл бұрын
@@RyanJacksonElectrical That's what I thought, thanks!
@josephherrington78973 жыл бұрын
Now im confused.......
@ronaldkovacs70802 жыл бұрын
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?
@RyanJacksonElectrical2 жыл бұрын
It depends on the type of cable. For NM and AC cable, yes. See 334.80 and 320.80
@timflory47673 жыл бұрын
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.
@besafe9 Жыл бұрын
Do you have one GFCI which protects 2 more receptacles downstream? The capacitive current, caused by voltage to ground, will be different in the hot, (120V to ground) than the neutral (maybe 1-2 V to ground). On a long enough circuit, perhaps 100 ft, this might cause enough imbalance to trip the upstream GFCI. A high voltage spike on the hot will make it more likely.
@manresaelectric3 жыл бұрын
hey Ryan would you consider "stack its" as bundling?
@RyanJacksonElectrical3 жыл бұрын
If we are talking about the same thing, they provide a separation between cables. My answer would be "no," it is not bundling.
@jonhuberty88183 жыл бұрын
So in hidsight when the nuetral carries the Full load, is when its counted?
@carultch3 жыл бұрын
Yes. When the neutral is a mandatory part of the return path, that cannot be nullified by balancing the loads, it has to be counted. Like you see on phase-to-neutral 2-wire loads, and "open wye" single phase loads derived from two phases of a 3-phase grid.
@ScottMako14 жыл бұрын
As I understand 334.80 says you can not use that exception for that example pictured, of nm cables, because you would have to fire caulk that hole???
@RyanJacksonElectrical4 жыл бұрын
For the hole, that is correct. In fact, I made a proposal to delete that requirement because this exception would always remove it. Instead, they added language indicating that my exception can't be used! :D
@ScottMako14 жыл бұрын
@@RyanJacksonElectrical Thank you for your response and all you do. Your knowledge is priceless. I have learned more than you could imagine from watching your videos over the years. Keep up the great work it is much appreciated!
@pedromagallanes69993 жыл бұрын
I'm confused. For testing purposes, do we count the neutrals regardless of the situation?
@RyanJacksonElectrical3 жыл бұрын
No
@pedromagallanes69993 жыл бұрын
@@RyanJacksonElectrical thank you for the response
@larrydoss Жыл бұрын
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. So..... 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.
@chriswiggins1985 Жыл бұрын
I can help you out with that, it cost money. Each time a new code cycle is adopted it cost money. It cost the state money, insurance companies money, electricians money, homeowners money everyone is going to spend more. Think about the AFCI and GFCI requirements and look at the cost of said equipment. Look at the requirements of SPD and then look at the cost. Cost of TR/WP receptacles and look at the cost. It's all about money.
@realvanman13 жыл бұрын
Non linear loads absolutely result in current on the neutral in three phase wye systems. If you used a true RMS ammeter you would definitely read it.
@alvilla7012 жыл бұрын
Wireways vs auxiliary gutters
@vishalgulati58472 жыл бұрын
How much Percentage is allowed for unbalnced load as per NEC ?
@vishalgulati58472 жыл бұрын
Percentage in voltage variation after unbalanced load
@RyanJacksonElectrical2 жыл бұрын
@@vishalgulati5847 There really isn't a requirement in the NEC that addresses that.
@vishalgulati58472 жыл бұрын
@@RyanJacksonElectrical so can we put any range unbalanced system. ? For example A =45amp, B= 55 Amp and C =83 amp. And I have 9 type of this unbalnced 3 phase 5 wire system. I am rotating phase between each other system but any system can be turned off due to fault etc. Do not know what would be impact on customer side source supply side and voltage variation with unbalnced load. Can you please guide me
@regularguy29432 жыл бұрын
At 10:45 the beau teal imbalance of 20amp 15 amp and 10 amp 5 is the difference so 5 x 1.73 =8.65 who needs that big equation
@RyanJacksonElectrical2 жыл бұрын
Try that with 10, 10, and 0.
@chadhardwick9214 Жыл бұрын
I think counting the 24" raceway and the gutter together.... Is shady.... Should be separate is my vote ...it's not the same ...