Which is Correct by NEC 2023?
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- Опубликовано: 31 июл 2024
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Another great piece of your work. Thank you.
Many thanks!
thanks Bill on the tip have a better understanding on it have a great weekend
You bet! Have a great weekend!
Thanks for the video, Bill!
No problem, thanks Tim!
Thanks Bill, happy Weekend 😎⚒️😎⚒️😎
You too! Thanks Ted!
👍thanks for the video
Thanks Charles!
Good explanation, thanks for great videos Sparky.
Hi Gary! No problem, thanks.
This would be great in my EKit.
👍 👍 💯
Thanks Theo!
You reference main bonding jumper in your video, but you are talking about the grounding electrode conductor. I love your videos.
Good point. I'll look for another reference re the GEC needing to be unspliced. I'm a bit off the mark with 250.24 (C). I took the 250.24(C) refence out with RUclips editor. Thanks for pointing that out!
@SparkyChannel
One on left is CORRECTLY. Cannot be spliced , plus connector is only listed for ONE conductor. 👍
Love your videos!
Window cuts for the winnn
While I don’t get involved with grounding rods, this reminds me of an electrical outlet where I once noticed a grounding wire tied in with a plastic zip tie. At least, they used a metal strap here. LOL
LOL! Funny, but sad too.
Hi can u pls send me the link to order a necklace hand book thanks
So how yu connect the two wires….?! Are you going to use two ground camps
Both, they're cut. Also, if the acorn is listed for 2 conductors, then it's allowed
Yes!I got it,cause I put 2wires under 1 screw and got turned down
Good job!
I submit that an additional configuration should be approved. Strip about 3" of insulation from the ground wire as in the left example. Bend the wire back on itself leaving a loop of bare copper. Place this loop against the copper clad ground rod and slip an acorn nut over the loop and the rod. Tighten securely. As in the left example, the ground wire is not cut and continuity is maintained if the acorn nut becomes corroded or loose. Advantage 1: No need to thread the acorn nut down from the free end of the ground wire. Advantage 2: Twice as much ground wire conductor is in contact with the ground rod. Advantage 3: An additional ground rod can be added at any time without interrupting the existing ground circuit. Advantage 4: The ground rod can be easily serviced and the acorn nut replaced if necessary without disturbing the existing ground circuit.
Very interesting, thanks!
Folding the GEC in half and sliding the acorn over the loop is not code compliant as there are now essentially two conductors under the clamp
Hi Don! Yes, it would exceed manufacturers specs for the acorn clamp.@@donl1410
Hi Bill. I've see that folding thing done by another RUclips electrician and made my same comment. I guess it is done without incident. 🤔@@SparkyChannel
LOL! @@donl1410
The grounding electrode conductor has to be continuous. The picture on the right looks like it's two separate ground wires
Yes, that's true.
grounds come off a busbar so you will always have separate grounds.
Looks to me; both rods were cut off and are no longer 8 feet Making them both code violations.
Good point. But it was just a competition. So, if they would have drilled those rods down 8 feet, they would have gone through the ceiling and into the 1st floor. So it was a simulation, but they were inspected by judges.
@@SparkyChannelmaybe you can get a hand bender and bend a back-to-back 90 on one ground rod. That way you do not have to cut it or go through your floor.
What about using 2 clamps on a single ground rod?
Nope. I asked that question years ago of the NFPA. Their reply was it must be 1 continuous conductor from the grounded equipment to the last ground rod.
@@willgallatin2802 NFPA is a joke.
I have two on one of my 4 rods (I have solar arrays, detached garage, sub panel in garage, lot going on). The one with two has the solar array on the house copper run going through a ground bar on the side of the house and continuing to the ground rod. Ground rod has the main ground from the main panel in the basement too. Will I change this / fix it because of 'code'? No, because it's better and not able to lose this ground connection even more so with how it's run. Keep in mind, both grounds going to the rod also go to that bus bar with 1-2 other connections there as well.
Jim, I made you a video answer: Can I Use Two Acorn Clamps on a Ground Rod by 2023 NEC 250.64(C)?: ruclips.net/video/7UAxo8cVmvo/видео.html
Is it useful and allowed to coat the bare wire and clamp with heavy duty corrosion inhibitor since it is exposed to the elements?
Yes, as long as it's made for electrical use.
yeah in GA we call'em acorn clamps as well. I would like to know the scientific study behind "number of conductors" rated for them clamps, cause you would think the more copper touching each other the better in a grounding system. Then again in Fort Benning they required us to put in a grounding grid and cad weld each rod that went to the roof with multiple lightning rods. maybe they know something I don't, but I'd like to know.
Hi! The companies that make the connectors, such as the acorn clamp, hire engineers to run tests. Then they publish their findings, then the manufacturers make their manufacturers specs.
Those ground rods look like they were cut with a hacksaw
Good point. But it was just a competition. So, if they would have drilled those rods down 8 feet, they would have gone through the ceiling and into the 1st floor. So, it was a simulation, but they were inspected by judges.
So. Does that mean the one on the right will not perform its purpose?
I would say that the concern would be that it's performance would be compromised over time.
Not an electrician so excuse what isn't obvious at least to me. How is the one on the left considered 1 conductor or is that a different type clamp?
It's one wire because it isn't cut. As we say, it's unspliced. The one on the right is spliced, so it has to be counted as 2 wires.
@@SparkyChannel Ok I think I get it. The ground round isn't counted as a wire/conductor. That's what was throwing me off. To my untrained eye I see 2 wires in there. :)
I understand.@@scotts4125
Your in Tennessee often these day's 😮. Have you decided to be part of the Great Exodus from California 😊
No, I'm still here in sunny California.
well i got that 100% wrong.
Not a problem. Thanks!
Now hold on a minute. Are you charging time and material for the job? If so there's a case to be made for the one on the right. 😉
Ain’t that a no no cut ground rods
I would guess on the right they didn't realize they had to do 2 ground rods
Yes, I think so.
And the one on the left is just the common sense way to do it also.
I agree.
@@SparkyChannel I do wish someone would make a clamp that holds the wire perpendicular to the rod as that would make for much neater installations when the conductor needs to pass through a rod rather than terminating at the rod.
Excellent idea!
I wonder what is the reason that makes one correct and the other one dangerous.
Perhaps corrosion possibility on the cut grounding electrode conductor? Or overloading the acorn clamp?
Probably less of an issue with stranded, but my guess is with solid wires there would be a tendency for one to be looser than the other.
Interesting About every 5 years I take mine off of the house and clean the wire! Need good ground for computers
Great idea, thanks!
Grounds are suppose to prevent electrical fires but I have seen maaaany times when a properly grounded 120 VAC receptacle burns up and catches on fire.
True, that can happen.
Wire on the left keeps strands tightly bundled for maximum contact and ground fault current transfer. Wires on the right have strands that are spread out and loose which decreases total contact area. Without even knowing written code specifics, this should be obvious.
Excellent!
The strands being spread out increases the surface area of the contact points, meaning that it should transfer the current better, at least from a purely mathematical viewpoint