Originally Posted by smac999
the house line leaving the switch should be fused... if that is your question.
there is many different types of switches... the blue sea on / off / combine dual cct ones are now the most I use.
This is a starter circuit. The engine
uses the starter batter on A, or the House bank on B, and OFF is an item. The switch also has "Both" which would in effect also function as a bridging circuit.
Perhaps this is not a good method to bridge banks, even though this common battery
switch does so.
If the line to the house bank is fused/breakered, then when connected to house bank for starting the potential large rush of starting current
is likely to blow the fuse/breaker. If to compentsate for this, the fuse/breaker is set too high, it defeats the safety
If no fuse is used, then when Both is selected, there is potentially a huge rush of current
if one bank is too low, or shorted.
Should "Both" be disabled on the switch, or avoided except in extreme circumstances.
I could rig a dedicated bridge switch with a fuse/breaker. Is this the better approach? What value for this fuse/breaker?