"basskisser" wrote in message
m...
K Smith wrote in message
...
CCred68046 wrote:
I have seen this grounding questions with metal boats before and I
dont
understand what the issue is. If the boat has a motor I can almost
guarentee
its grounded somewhere to the hull weather its inboard or outboard.
Would
someone actually go through the trouble and expense to isolate the
electrical
system from the hull? That would take a lot to do!!

The debate is long & I'll stay out of it for now, however you are
mistaken Cred about "almost guaranteeing" engine electrics are grounded,
indeed most proper marine engine electrics are not.

How can an electrical circuit be made if there isn't any ground?

It has one - It just does not use the engine or drive components to provide
the current return path; a separate "ground" wire carries the juice back.
Look up "ground loops" on google. This type of wiring allows effective
assaults on this nasty problem. If you are trying to eliminate radio
interference problems or reduce electrically induced corrosion problems,
this can make a lot of sense.

There have been a few times that I wished that automotive components were
built this way.

Mark Browne