I am the origional poster of this thread. Thanks all for the input.
I just finished installing two Balmar alternators(twin engine boat), a bank of 8 agm batteries for the house,inverter, and about a hundred pounds of upgraded cabling.
I wanted the ability to disable all DC current from flowing if there was a electrical problem, those batteries and alternators put out a lot of amps. All wiring is protected by fuses and Cbs but I still want to be able to manually cut off supply. And be able to do so without entering the engine spaces.
I used the Blue Sea remote battery relay( http://bluesea.com/category/1/productline/407
) as suggested here by Keith. I also installed switches in the alternator field cables to disable their output if necessary.
Probably overkill but for the cost of some switches and relays I think worth the effort.
PS The remote battery switch only requires 12v to open or close the relay.
-- Edited by millennium on Tuesday 13th of September 2011 06:46:13 AM