Originally Posted by Rusty123
2. Why does the AC system need to be grounded to the engine
block? Grounded via shore power
ground, sure, but what advantage is grounding the engine
block? Is this just a precaution against the block becoming energized by an AC short? If so, is this the same concern that makes some people advocate grounding all metal objects (perhaps also answering question number 1)?
if an ac hot wire shorts it self against a through hull
, engine block etc. without the bond you just electrified the water
around the boat. and the engine room. people will get injuried. and they won't know until it's too late. by bonding them together. if a ac hot shorts any of the bonding system or dc neg. the ac breaker will blow as it's a dead short.