So here is one for the experts...
We are currently troubleshooting a shock issue in a pool.
Single panel in home
240v GFI breaker supplying power to equipment
Pool light is a plastic fiberstar series which requires no bonding. It is 12v.
Single #8 running around under concrete, connecting to both cups on the rail and ladder, then running back to pump and swg, where is connects to a single line running between those, with a properl bonding lug connector.
There is about 1.5 volts showing in the pool.
Have done all the usual stuff, turned off the main breaker etc...
Voltage is still there.
I know the issue is the concrete is not bonded so there is a difference in potential and that will need to be addressed.
That will be taken care of later.
However, we are trying to find the source of the problem, which I believe is the neighbor as the pool is pretty much centered between the neighbors pole/transformer a few hundred yards and their own pole transformer about 50 yards away.
The poco has been out and disconnected the homeowners meter as well. They said they will have to schedule down time to check the neighbor.
All connections in the panel and the wiring for the pool equipment is correct.
The interesting thing is the voltage is on the bond wire.
We found this by removing the pool bond wire (which is buried) from the motor/swg.
With the pool bond wire lifted from the motor/swg bond wire:
I have a ground rod 2ft in the ground, 8 ft from the pool.
When I connect a wire to it, then touch the bond wire coming from the pool, we get the voltage.
When I connect a wire to it, then touch the bond wire that is connected to the motor and swg, nothing.
With the wire connected to the motor/swg, we read 1.5 volts in the pool and get the shock
With the wire disconnected, no volts in the pool and no shock
I guess what is a bit puzzling is that since the bond wire has the voltage on it, and the bond wire is connected to the metal ladder, I would expect to feel it all the time, unless I removed the ladder.
Only feeling it once we connect to the motor/swg - doesn't really make since to me. All that has happened now is that we have put those 2 pieces of equipment at equipotential with the handrail and ladder. Why would we feel the shock only when it has been attached to the motor/swg? Is it because the pool equipment is grounded via the panel and with the stray voltage problem it is felt??
(again, I know we are feeling it because the concrete is at a different potential and that will be addressed, it just boggles me that since the bond wire has the voltage and the source is not the motor/swg - it just doesn't make sense we only feel it after connecting to them?)