Originally Posted by DotDun
Thanks again for the thought provoking conversation.
I'll second that. While there have been disagreements along the way they have been civil and pretty respectful. This is in sharp contrast to threads in another CF subforum where posters are mugged as soon as they discuss something other than sales literature.
While we plan to become less dependent upon the shorepower umbilical and therefore in less need of any isolator, the thread has still been of real value. Senta II is bonded throughout. As long as we hang a good and well connected sacrificial zinc over the side that may (see below) all be fine and good, but otherwise it is a real danger
I certainly wouldn't want the bonding to help a lightening strike blow out all our through-hulls, so the only reason for keeping it is to minimize galvanic damage. Given that a stray current
from a nearby shore-connected electrical
source could set up a potential across the bonded through-hulls that overpowers the zinc, I think it is time to cut the bonding.
I still have to confirm that the potential could overpower the zinc, but if it weren't for this thread I would not have even wondered about it.