As a 4th year IEC apprentice, I wish all of my teachers had your skill and passion to teach. Thanks for filling in the gaps, look forward to many more videos
Dave thanks so much for creating the videos!!! I have been a licensed electrician since early 90's and have been in many classes. Your explanations and teaching methods are excellent! Apprentices to Journeymen will greatly benefit from your videos and explanations!!! Dave please do a video on continuous loads and ampacity adjustment calculations when both are a factor in a conduit run?
wish these videos had been available when I went through my apprenticeship in the IEC twenty-three years ago. I'm now a second year electrical instructor for ABC of Iowa and use your videos regularly in my class. Your method of explaining is wonderful (especially the open neutral demonstration). Thank you for making these.
I've been teaching apprentices in the field correction factors on scraps of drywall during breaks for years. From now on I'm just sending them links to this channel. Thank for getting me back my lunch breaks!
Probably the best explanation on derating I have seen. Of special note was the use of the thhn or 90 degree rating. I believe this to be the most misunderstood aspect of the entire issue. Thanks.
I'm not an electrician but I do have an electrical engineering degree and am working on passing my local homeowner's electrical exam so I can pull my own permits. Your videos are super helpful! A couple suggestions I have for future content: * Service and feeder load calculations * Load calculation guidance specifically for level 2 home EVCS which isn't covered very well at least by NEC 2017 Article 220 or 625. Actually, given the massive amount of EV charging infrastructure in general it would probably be good to work on a series exploring best practices and code guidelines around that - both commercial and residential charging.
I also would love to see that as my company put in an 80A Ford lightning charger and used 100A wire and OCPD for continuous duty, and Inspector gadget is making us do a service calc for the home. I know the Chevy Bolt charger requires a NEMA 14-50 outlet which has to have GFCI protection and thats a $100 breaker, we try to hardwire most chargers and theres an exception saying GFCI breaker isnt required here in Oregon
Who is this man? He is doing a great job on his videos. I have been a licensed C-10 electrical contractor for 40 years. His material is wonderfull. This is all information that I had to learn the hard way.... by trial and error. Thank you.
I've been out of the electrical world for a while (EE turned CS) but I'm wiring up a shop right now and needed a refresher. I don't know that anyone could have said it any clearer, and outlined all the specific conditions so well.
Dave, I like the simplicity to which you pass knowledge. Thanks for your videos , i listened to them to get me up to date on NEC. Please do you have them in book or e-book form ? I am interested. Thanks
Excellent video. I'm confused on one thing though. You mentioned 310.15(A) which states in 2nd paragraph: "The temperature correction and adjustment factors shall be permitted to be applied to the ampacity for the temperature rating of the conductor, if the corrected and adjusted ampacity does not exceed the ampacity for the temperature rating of the termination in accordance with the provisions of 110.14(C) ." My question is, WHICH ambient temperature correction factor would I use to correct the conductor's ampacity? The one of the lower-rated terminal or the one of the higher-rated conductor? And after I calculate this corrected ampacity, must it be less than the terminal ampacity under the conditions of use OR its ampacity after correction for ambient temperature? The code doesn't mention needing to correct termination ampacity as a requirement for this permission but it seems odd that it wouldn't be done, right?
Thank you Dave! Nec is unclear on what constitutes “bundling” with regard to installing NM-B cables. Can you please provide any information that specifically speaks to this issue? Great video!!
I'm using 2014 NEC and I don't see 310.14 , what to do??? Another question why did you not incorporate 110.14 ( c) ( 1) . You consistently used the 90 degree col and I dont know why? When is it ok to use article 110.14 and when its ok to choose a starting col from 310.15 ?? Great presentation ,I'm just gonna have to go elsewhere to get my question answered!
As a 4th year IEC apprentice, I wish all of my teachers had your skill and passion to teach. Thanks for filling in the gaps, look forward to many more videos
IEC was and still is a fucking scam brotha 😂
So much better explained that Mike Holt's poorly edited endless rant. Thanks Dave!
Dave thanks so much for creating the videos!!! I have been a licensed electrician since early 90's and have been in many classes. Your explanations and teaching methods are excellent! Apprentices to Journeymen will greatly benefit from your videos and explanations!!!
Dave please do a video on continuous loads and ampacity adjustment calculations when both are a factor in a conduit run?
Dave, your videos are life savers. Thanks a lot!
Awesome video, thank you for being so thorough and understanding. I'll definitely be watching the rest of your videos.
Thanks you Dave, excellent depicted analysis and like the visuals aid of magnets as bullet points.
wish these videos had been available when I went through my apprenticeship in the IEC twenty-three years ago. I'm now a second year electrical instructor for ABC of Iowa and use your videos regularly in my class. Your method of explaining is wonderful (especially the open neutral demonstration). Thank you for making these.
Hell yeah, great to see you back.
Solid gold my man. Needed concise and you do that
I've been teaching apprentices in the field correction factors on scraps of drywall during breaks for years. From now on I'm just sending them links to this channel. Thank for getting me back my lunch breaks!
Great VID, thanks for taking the time.
Super helpful. You're a great teacher. Wish you the best
Good to see you again Dave! Thanks for the video!
Thanks Luke, and thanks for following and supporting. Hope all is well.
By far one of the best teachers I have ever seen...better than mike holt 100%
Probably the best explanation on derating I have seen. Of special note was the use of the thhn or 90 degree rating. I believe this to be the most misunderstood aspect of the entire issue. Thanks.
I'm not an electrician but I do have an electrical engineering degree and am working on passing my local homeowner's electrical exam so I can pull my own permits. Your videos are super helpful! A couple suggestions I have for future content:
* Service and feeder load calculations
* Load calculation guidance specifically for level 2 home EVCS which isn't covered very well at least by NEC 2017 Article 220 or 625.
Actually, given the massive amount of EV charging infrastructure in general it would probably be good to work on a series exploring best practices and code guidelines around that - both commercial and residential charging.
I also would love to see that as my company put in an 80A Ford lightning charger and used 100A wire and OCPD for continuous duty, and Inspector gadget is making us do a service calc for the home. I know the Chevy Bolt charger requires a NEMA 14-50 outlet which has to have GFCI protection and thats a $100 breaker, we try to hardwire most chargers and theres an exception saying GFCI breaker isnt required here in Oregon
Thank you for the class!
Hi Dave I’m your fans like your video a lot
I like the clarity
Perfect explanation!
Video was very helpful! 👍🏽
Who is this man? He is doing a great job on his videos. I have been a licensed C-10 electrical contractor for 40 years. His material is wonderfull. This is all information that I had to learn the hard way.... by trial and error.
Thank you.
Great job explaining this! You make it very understandable.
Ps: Soli Deo Gloria
Excellent explanation.........
This is GREAT!!!
I've been out of the electrical world for a while (EE turned CS) but I'm wiring up a shop right now and needed a refresher. I don't know that anyone could have said it any clearer, and outlined all the specific conditions so well.
gifted teacher
Dave, I like the simplicity to which you pass knowledge. Thanks for your videos , i listened to them to get me up to date on NEC. Please do you have them in book or e-book form ? I am interested. Thanks
Wow ur a great Instructor 👍
You good sir are a legend 🎉
Thank you sir 👏🏼
thank you, sir
Excellent video. I'm confused on one thing though. You mentioned 310.15(A) which states in 2nd paragraph: "The temperature correction and adjustment factors shall be permitted to be applied to the ampacity for the temperature rating of the conductor, if the corrected and adjusted ampacity does not exceed the ampacity for the temperature rating of the termination in accordance with the provisions of 110.14(C) ."
My question is, WHICH ambient temperature correction factor would I use to correct the conductor's ampacity? The one of the lower-rated terminal or the one of the higher-rated conductor? And after I calculate this corrected ampacity, must it be less than the terminal ampacity under the conditions of use OR its ampacity after correction for ambient temperature?
The code doesn't mention needing to correct termination ampacity as a requirement for this permission but it seems odd that it wouldn't be done, right?
nice trick with the magnets used as white board markers
EXCELLENT VEDIO 👌👌🙏🙏
Thank you Dave! Nec is unclear on what constitutes “bundling” with regard to installing NM-B cables. Can you please provide any information that specifically speaks to this issue? Great video!!
I'm using 2014 NEC and I don't see 310.14 , what to do??? Another question why did you not incorporate 110.14 ( c) ( 1) . You consistently used the 90 degree col and I dont know why? When is it ok to use article 110.14 and when its ok to choose a starting col from 310.15 ?? Great presentation ,I'm just gonna have to go elsewhere to get my question answered!
can you do a video about sizing feeder conductor for dweling units... thanks for your videos
So when we say “alowable ampacity” we’re talking about how many amps a load is allowed to pull through a wire?
Running 14/2, or 12/2 NM-B: We are limited to 2 romex per stud hole, is that correct? Could both hot+neutral for each set of romex?
where can i see in the book about the metalic and non metalic ?
Someone give him a hand 👏
You forgot Conductor terminal at the LUG is only rated for 60° C
He said that
Adjustment factors don’t apply to conduits under 24” you just can’t exceed 60% fill
Derate, not restrict
Terminology matters
Thanks for your help
Thank you.