Neutral-to-Earth Voltage (NEV), NEC 2020, (44min:40sec)

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Published 2021-08-30
Thanks for watching, in this video Mike Holt discusses Neutral-to-Earth Voltage (NEV).

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All Comments (21)
  • @cwmalone
    One of the only great things about the Internet is the wealth of information that Mike Holt provides, free of charge. Thank you, Mike!
  • @EricDennison
    Thanks for this awesome presentation. Now I know how to think about and describe the 10v NEV that I am seeing at my rural location (enough to hurt, but not kill).
  • Hello Mike. Thank you for putting the Neutral to Earth voltage into perspective. A truly amazing presentation. Thank you.
  • @TimPerfetto
    Thank you for your passion explaining these mostly unknown yet important concepts. And putting it out there for free.
  • @vince6829
    Crystal clear presentation. Thank you!!
  • @haight78
    Mike thanks so much for sharing your vast knowledge of the subject with a smooth articulate confident delivery that makes listening to your classes thoroughly enjoyable.
  • @85agyoung
    Mike your videos are great. I work for a large utility in NC and I am a protection and control tech. I have a great understanding of electrical fundamentals. It is hard for people to understand step amd touch potential so I understand your explanation.
  • @n4hoop
    Great presentation and explanation of NVE Mike, i really learn how it measured the NEV to a ground referencing the amperage load on equipment house I'm an a fire alarm technician on a growing industry and safety thank you and God bless you all
  • @ham-radio
    Dear Mike, You are the best teacher on this subject. I use you are a reference over and over in my Ham Radio Videos. As a former Building Inspector, I always learn something new from you and your staff. Ham Radio guys like me often have many pieces of gear amounting to more than $10K. While watching and listening to your video (more than one time) i was finishing a 4KV DC power supply that can deliver 2 amps. I have to deal with ground neutral and the so called RF ground. Keeping each box at the same potential above ground takes a lot of work. Your graphic was very helpful too. Regards, Jim Heath W6LG
  • @nsh399
    Mike you've been such a blessing throughout the years...I was first introduced to your books back in 2001 I was on my 2nd year of apprenticeship. May God continue blessing you and your family. 🙏
  • @ridefast0
    Very interesting for a UK viewer where we do things differently than that! Almost bailed at the god-credit which felt jarring, but I am glad I stayed and it made me think! We have a 3-phase transformer for each area of housing, where the low side neutral is grounded, and 3-phase+N LV runs down every street with houses connected sequentially to one of the three phases and N. Single phase is about 230V but there is about 400V difference between my live and my neighbor's live! If I want temporary 3-phase I can talk nicely to my neighbors both sides and run extension cables.
  • Mike, you have been an inspiration. I have learned so much about theory from watching your videos. Most amazing, you somehow have made reading National Electric Code fun!
  • Yo Mike you the man. I went through one of California's most intense apprenticeship programs which included 8000 hours OJT and 200+ books from basic theory to PLCs and everything inbetween. I still am completely lost on a lot of subjects especially grounding/ bonding, and "voltage". Those 2 subjects are the hardest to fully understand in my opinion. Thank you for the content and blessing up my confusion!
  • On the overhead Transmission lines you will have the 3 cables carrying your phases plus you will have your static ground on top of the poll and if the Transmission lines run parallel to any railroad tracks or underground piping it will have a mitigation cable to protect anyone working on those by preventing accidental discharge and it also helps prevent corrosion on any underground pipes.
  • @joecrozier3236
    Thanks for another great video, Mike. As a utility P.Eng. I've seen both cases over the decades: cause of high NEV on the utility side -- and the customer side. Regardless, it's ALWAYS a good idea for the utility to put its own house in tiptop shape. Avoid finger-pointing. Even if you measure less than 25 ohms at the pole or pad, improve it anyway -- get it down below 5 ohms! It might solve the customer's problem. But even if it doesn't, you're still cutting the step+touch voltage risks to your linemen and the public.