my home has wells and septic tank built in 1963 I have the Original Galvanized Well tank. Electrician Hooked Copper Ground rods to hot water tank that is a rheem 9yo and later that night after new circuit box installed I turned on hot water in kitchen and heard a pop near the hot water tank. 2 weeks later leaks all under house and tree roots ruined slab all over. What Caused the POP? Owned home since 1978 everything is 1963 code until that ground was done. I have no idea if home has other galvanized/Iron under home. I really need Help with this. Nobody understands electrical current. I also have a mastercool swamp cooler and hot water tank they hooked to was gas.
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