Originally posted by cknight
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Originally posted by cknight View Posteven if the bond is bad wouldn't the NEV be the same on both sides of the pool? Or at least close. The east side and the water read the same. Disconnect the bond and everything reads the same. Usually the NEV is the same all the way around the pool right? At least in the earth. Probably overthinking this. What is safer? No bond connected back to pool pump and all at the same reading or bonding it and having 3 volts present.
Again you are not "grounding" objects in the pool area, you are "bonding" them together so there isn't any potential between them.I live for today, I'm just a day behind.
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Originally posted by kwired View PostI agree, but isn't stray voltage only "stray" until you know what is causing it?
Most of what people call "stray voltage" on a neutral is just results of voltage drop somewhere on that MGN, cause might be from primary current, might be from secondary current - either way there is a rise in voltage to "ground" when there is voltage drop across an otherwise grounded conductor, and if current is flowing there is some voltage drop across that conductor.
Normal NEV is, by definition, not stray voltage.BB+/BB=?
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Originally posted by cknight View Posteven if the bond is bad wouldn't the NEV be the same on both sides of the pool? Or at least close. The east side and the water read the same. Disconnect the bond and everything reads the same. Usually the NEV is the same all the way around the pool right? At least in the earth. Probably overthinking this. What is safer? No bond connected back to pool pump and all at the same reading or bonding it and having 3 volts present.
It is safer with a bond and 3 volts all around.BB+/BB=?
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Don't think I worded that correctly. I meant the NEV in the earth. Not the concrete. The concrete is only 6' around the pool, then just dirt. I would think the NEV would be the same in the dirt if that's what it was. Disconnect the bond and it's not there in the earth.
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I am assuming "NEV" means neutral to earth voltage.
Earth is earth, the pool and everything that is supposed to be bonded to it very well may be different potential then earth - I keep trying to stress this point - it is the reason equipotential bonding is necessary for safety of users of the pool. We don't care what NEV is we care what potential is between objects in and around the pool. The fact that the EGC of pool pump and any other electrical items involved is also connected to the service neutral means the pool and entire EPB system will be at same potential as service neutral (if EPB is done correctly and has no holes in it)
The fact OP has voltage between items that should be bonded together means there is a failure of bonding somewhere. Anything that is at same potential as "remote earth" is what isn't bonded to the EPB system.I live for today, I'm just a day behind.
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