- Nov 7, 2018
- 1,049
- Pool Size
- 14000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-60 Plus
NEVER worry about us.My deepest apologizes to the community
OMG, I just read through the posts!NEVER worry about us.
we will keep ourselves amused until you return. There’s some good ones back there so enjoy them on Sunday !!
I don't think the PC is wrong. Neutral to earth voltage (NEV) is generally always present to varying degrees. From what I understand, they really only get concerned if it gets to be more than about 8v which is more than enough to get a slight shock but not enough to harm you. There are many causes but I believe most NEV is due to the current imbalance in 3-phase power which travels over the neutral and I suspect if each person on this thread were to measure their own NEV, some if not most would be just as high as yours.Also, I received a call from the engineering department at the PC. Basically, he said, your bonding has failed at your pool and needs to be fixed. He also said, based on all of the utilities that connect to your ground bar, "There will always be voltage". Long story short, I'm SOL for any further PC investigation.
Neutral return currents through the ground[edit]
In three phase four-wire ("wye") electrical power systems, when the load on the phases is not exactly equal, there is some current in the neutral conductor. Because both the primary and secondary of the distribution transformer are grounded, and the primary ground is grounded at more than one point, the earth forms a parallel return path for the neutral current, allowing part of the neutral current to continuously flow through the earth. This arrangement is partially responsible for stray voltage. [10]
That might be the reason that the water is at a different potential than the railing. The light bonding would help with the pool water bonding.Oh, I was checking my pool light. Everything was fine until I was reinstalling it and the end of the ground wire broke off. The ground lug was seized and the wire only had a few wire strands connected. Now I need to repair that when I drain my pool for winterization. Hopefully, I don't fall in trying to do this
Yes, it's a vinyl liner. Based on your description and explanation of the bonding, this certainly makes sense.I don't think the PC is wrong. Neutral to earth voltage (NEV) is generally always present to varying degrees. From what I understand, they really only get concerned if it gets to be more than about 8v which is more than enough to get a slight shock but not enough to harm you. There are many causes but I believe most NEV is due to the current imbalance in 3-phase power which travels over the neutral and I suspect if each person on this thread were to measure their own NEV, some if not most would be just as high as yours.
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Stray voltage - Wikipedia
en.wikipedia.org
The more I think about this issue, the more I believe it is not a fault anywhere but just a problem with the bonding and most likely the water bonding. Correct me if I am wrong but this is a vinyl pool correct? Vinyl and fiberglass pools are much harder to bond to the water because the surface is isolated. It would seem that somehow the pool water is at or near the local ground potential while the railing is at the home neutral potential.
That might be the reason that the water is at a different potential than the railing. The light bonding would help with the pool water bonding.
Can you replace the railing with a nonconductive one which doesn't need bonding? I have one of these that I installed myself.This is a big question for everyone, Would you remove all of the current decking and redo all of the bonding?
This certainly can be a viable option. However, since the bonding has been compromised, will the issue expand or potentially lead to further issues if it's not fixed? Also, when the time comes to sell the house, can this be a liability?Can you replace the railing with a nonconductive one which doesn't need bonding? I have one of these that I installed myself.
The rest of the pool is fine when I test in different areas. If it is a bonding issue with the water, wouldn't the same voltage be everywhere I test? That is a nifty bonding solution. Would you add this to the filter/pump area?I don't think the issue is with the railing or the deck. I think the issue is with the water.
I would try fixing the light first to see if that helps at all.
Second, you might add one or two of these:
View attachment 374935
View attachment 374931
Exactly how are you testing it? One lead on the railing and the other in different parts of the water?The rest of the pool is fine when I test in different areas. If it is a bonding issue with the water, wouldn't the same voltage be everywhere I test? That is a nifty bonding solution. Would you add this to the filter/pump area?
One lead to the railing anchors and the other to the water. I tested the entire pool this way and it only spikes at the pool corner in the shallow end where the railing anchors are.Exactly how are you testing it? One lead on the railing and the other in different parts of the water?