Ground-Fault Circuit Interrupters (GFCIs)

Since their introduction in the 1970s, there is no question that ground-fault circuit interrupters (GFCI) have saved lives! Take the time to watch the video where Mike and the team explain the theory behind ground-fault circuit interrupters.
This video is extracted from Mike Holt's Understanding Electrical Theory Library, to learn more about this topic visit www.mikeholt.com/Theory. For additional information call 888.632.2633.
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[@LLAMA-gym]

Didn’t realize how much I just love watching someone passionate about a subject. Inspiring to levels absolutely unmeasurable.

[@MikeHoltNEC]

Aww thank you for noticing my passion.

[@davidredpath4781]

We need more people like Mike Holt in this world

[@Ariccio123]

I haven't even watched the whole video yet, I just want to evangelize about the wonders of audible alarm GFCIs - these should be the standard! It's a really user friendly option for everybody!

[@ideclarejoshua]

In school getting my apprenticeship hours, learning this stuff now. Cool to see you are posting on KZbin, my second home. Thumbs up!

[@MikeHoltNEC]

Welcome to a great trade! God Bless, Mike

[@j81851]

Mike you look so good. Serving the Lord and others along with a good life has a very positive effect. Thank you for all your efforts. After 50 years in the trade you are the champion of electrical safety and a personal hero of mine. Long life good health and prosperity to you. Love to meet you one day and return a smile and a warm handshake! Be blessed my brother.

[@MikeHoltNEC]

How sweet is this message my Brother. Let's make it happen.

[@OnusofStrife]

Enjoying your videos as a curious homeowner laymen. I recently went around my house and tested all my outside GFCIs. Some did not reset. Watching this made me realize the failure to reset means the receptacle needs to be replaced as the electronics have failed. That makes sense but was totally not obvious.

[@MikeHoltNEC]

Wow, scary. Glad my work helped you make your home safer.

[@matthewcarroll6640]

Mike definitely has a method of teaching that makes it easy to follow and understand, so definitely gotta give him props. Thank you for all your materials. Mike.

[@MikeHoltNEC]

Thank you!

[@shaneoakley8757]

I’m in an apprenticeship program with the state of NC to get a standard certification as a level 1 electrical inspector and let me just tell you. Mike Holt gets mentioned a lot! 😎 Love and appreciate these videos! I keep them playing as I travel all over the state

[@MikeHoltNEC]

Lol, give a shout out to them for me.

[@shaneoakley8757]

@@MikeHoltNEC I sure will!!

[@TRYtoHELPyou]

test monthly, will do. Even though this is geared towards the students and professionals this is great information for the non-professional non-student (formal) trying to better themselves by gaining knowledge about the subject. Thanks all for doing what you do!

[@MikeHoltNEC]

Thank you.

[@genebowdish.mageniemagic]

Great explanation of imbalance

[@highwaymen1237]

Great video. Watched you're downhill bike video, very impressive.

[@MikeHoltNEC]

Lol... thanks.

[@wuilliamscoa3467]

Think about your answer!

[@MikeHoltNEC]

What?

[@mikeadler434]

👍👍

[@robertseverino8931]

Hi Mike! I appreciate you sharing all your knowledge with all of us which has always been of an immense value to me. I have a request for you that’s probably been done in the past, but I’m sure you could make it happen. If possible to transfer all your electrical books ober to Autible or any audio format. If you do have it in this format, please advise or send link. Thank you!

[@MikeHoltNEC]

Send me an email, [e-mail], and let's discuss this further.

[@MikeHoltNEC]

All of our Products that include Video also include audio streaming.

[@harpreetkaur5947]

Hello Mike, I have been watching and learning through your vedios for few years now. If possible can you please make a vedio on NEC Article 501. I know you made a vedio few years ago on Hazardous Area Classification. But if you would make a detailed vedio on wiring methods, Conduits, Fittings, Conduit Seals, Enclosures, Termination boxes inside Class 1 Div 1, Class 1 Div 2 areas. What are design considerations at the boundaries of each area. I work in Waste Water Industry, if you could explain using examples from lift station etc that would be great. There are multiple people around me that can use your guidance for a better understanding of Article 501. Also this will touch some topics of NFPA 820. Thanks.

[@davem5392]

I would really appreciate with all the commercial restaurant requirements if you could go over function of 3 phase breakers. I think most do not understand this

[@MikeHoltNEC]

? A three-phase breaker functions just like a two-pole or single-pole breaker...

[@bohill1832]

According to the NEC, can GFCI outlets be installed in bathrooms 16” above finished floor.

[@MikeHoltNEC]

The required sink receptacle in bathrooms must be installed in accordance with 210.52(C), which would not permit it to be 16" above finished floor. However other receptacles in the bathroom or other rooms in residential or commercial occupancies can be installed at any height, even in the floor.

[@zebiosogliani7132]

Why not use GFCI break type in the electrical panel instead of the outlet type?

[@MikeHoltNEC]

GFCI is set to trip between 4 - 6 mA, if you used it for the entire house, expect that you'll be losing power often.

[@genebowdish.mageniemagic]

I came up with an idea, imagine a non-contact voltage tester or detector, that is a watch type that you wear on your wrist, when you touch it hot wire, watch detects voltage, transmits signal to cell phone, cell phone transmits signal to disconnect with receiver and disconnects circuit, and or entire sub panel or panel, what do you think about my idea ? Oh, maybe false tripping ? Insulated coil Ring on index finger that detects current through finger, then to watch, cell phone, and trip circuit, sub panel or panel or disconnect with receiver

[@MikeHoltNEC]

Sounds like it's complicated that this watch would know what breaker to turn off. Let me know if you ever get such a device made.

[@genebowdish.mageniemagic]

@@MikeHoltNEC I’m working on it now, not as easy as I thought to detect voltage, current, I am learning about op-amps, I imagine when I figure this part out, the rest will be easy, I am thinking

[@billycroan2336]

I think it would be great if you could measure and alarm for ground fault current at the main breaker. Put both service conductors and neutral through a CT, that would confirm there's no leakage to the ground through duct work, piping, telephone, cable, or whatnot. I don't want the whole house switching off like it would in Europe with an rcd. But I would like to know what's the normal level, and be notified it it increases

[@MikeHoltNEC]

Would be nice.

[@genebowdish.mageniemagic]

@@MikeHoltNEC I just posted one of my circuits I was talking about, could be smaller, could be wireless, I have many more ideas on this topic, Gene Bowdish

[@wuilliamscoa3467]

Máster you should translate your books to spanish you going to make a lot of Money!

[@MikeHoltNEC]

My products are based on the National Electrical Code for those living in the US. I feel that to provide a safe installation, the electrical professional needs to speak and read English. So there is no plan to translate any of our products into Spanish. Note: Money doesn't drive me; just electrical safety.

[@wuilliamscoa3467]

@@MikeHoltNEC👍🏼

[@wuilliamscoa3467]

The nec is translated to spanish, to humble my friend!

[@MikeHoltNEC]

@@wuilliamscoa3467 What does this have to do with your original question and my original response.