Good morning! I recently received a mild shock in the vicinity of my pool light. I checked voltage from wet cement on deck near light to area near light and the light retaining ring itself and got over 5 volts reading. Light was turned off. I then turned off the breaker for the light in the breaker panel. 5 volt reading remained. Started turning off other breakers and when I got to one of the bedroom breakers the voltage disappeared. I then found out that my main ground cable from the breaker box to the ground rod had come loose from the ground rod (the clamp had corroded and failed to hold the wire). This problem has been fixed with a new ground rod. I think the two failures that caused my light fixture to energize were the failed ground wire from the breaker panel and a fault from the bedroom romex cable that leaked voltage to the ground wire in that cable (probably where the cable enters the breaker panel). Does anyone agree that this is what caused my ground system in the house to end up about 5 or 6 volts above ground level and therefore energize my light fixture thru the green ground wire? Thanks, everyone.