Originally Posted by Erin
I'm suprised you want a +'ve bus bar as really each item should be separately fused so a bus bar wouldn't be required for anything other than -'ve.
If you have say 10-15 circuits distant from the battery you want.
+ve battery terminal ->
big fuse ->
big cable ->
remote +ve bus ->
wires leading to individual breakers ->
remote breaker switches ->
wires leaving panel to individual devices.
-ve wires returning to panel area ->
-ve bus ->
big -ve wire ->
-ve battery terminal.