I have an in ground pool that's probably 30+ years old. I had to change out the filter pump motor the other day and ran into the first of a few issues.
It's a 240VAC circuit and there's only the two hot wires at the junction box, i.e. no ground wire! The metal conduit from the sub-panel contains 6 wires. There's 2 red for the 240VAC, a black and white for neutral and 120VAC, 2 other red wires that are the 12VAC for the light. No ground wire.
I'm kind of puzzled by this and not sure what to do about it. I was wondering if, in the days before PVC conduit, did they use the metal conduit for the ground and, if so, was/is that allowed by code? It's the only thing I can think of for how they grounded the pump and the light even though there's no ground wire running to the motor, and the ground wire coming from the light is open and not connected to anything.
There's also no bonding to the pool, but that's another issue. There's been recent excavation and renovation and I'm digging around the pump area to see if I can find a bonding wire.
Any insight would be helpful. I am familiar with the potential consequences of doing nothing.