I have found what I believe to be improper bonding on the pool at our new house. The subpanel is connected to a ground rod near the pump AND the house main panel (isnt this incorrect?) The pump has two large green ground wire connected on the case...one appears to go to the pump pad, the other snakes off in the direction of the pool. The pump itself is grounded through the cord.
Here is the problem...I was following the green wire heading out towards the pool and pulling it out of the mulch as I went (it wasn't really buried...only an inch under the surface) when about 5 feet from the pool, it just stopped. It doesn't look severed like from as shovel, but a clean beveled cut...as if it never really did go any farther. I have dug around trying to see if I can find the other end, but it appears there isnt one. SO...the pump isn't bonded to the pool. This is an old pool (the CO says 1983) so how would I go about connecting to the grid (if any) after the fact? Should I be looking for a piece of rebar to clamp on to? How do you test to see if your bonding is actually working?
To date we have no issues (no tingling on pool ladders, etc) although the 220 GFI test button doesn't trip when pushed which may or may not be related.
Any bonding tips short of ripping it all out?