Battery cut off switch
I just bought one like the one in the picture below. Should I install it on the positive terminal or the negative and why? I run two 12V group 27s in parallel.
Forum Discussion
100ton wrote:
I guess the advantage of using it on the negative post would be not dealing with the potential "spark" issue when used on the positive side.
Sparking has to do with the current flowing and voltage across the switch. That's the same regardless of whether the switch is on the pos or neg. I can't see that it matters which side you switch, although convention is to switch the pos.
