Originally Posted by endoftheroad
Electrical ground terminals lead to my keel bolts.
It appears that many of you are making an assumption: endoftheroad does NOT say where these "ground terminals" originate from - they could be wires grounding the DC system.
See the cut green wire on the right side of this seacock?
One would assume it was is a bonding wire, but it wasn't attached to the bonding system at all - it was grounding the AC system to this seacock! It is best not to make assumptions about boat wiring
, some of it is quite, um, shocking.
Even if there IS a wire going from the mast to the keel bolt, keel bolts are frequently submerged in bilge water
and the connection at the terminal may be corroded, as may the terminal at the mast. Just get out the multimeter and check.
barnakiel: aluminum and copper should never be in contact with each other. Add bilge
water and the bottom of the mast would be gone pretty quick.
All this is fun stuff, but as daddle's story shows so well, lightning is gonna do what lightning is gonna do.