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
Oooooo I made lots of money repairing positive side switches that loosened the wires and managed to have the feeder wire touch a nasty negative point.
But of course Fleetwood and Bayliner have engineering teams a hell of a lot more intelligent than Caterpillar, Terex, Westinghouse, and Lockheed. Some of their PhD's can even espeak a little Eengles.
An acceptable quality cutoff switch mounted in an acceptable location can indeed safely handle switching battery positive. Wanna spend a few dozen hours chasing links I provide to see all those wonderful Blazing Dragon battery switches that can be broken with the palm of the hand? Recommending that positive be switched needs a couple of caveats to warn the unwary. I've got a lot of King Crabbers and Midwater Trawlers, never mind salmon boats floating around that are still using Cole Hersee switches installed 30 years ago. 32 volts shorted to the hull using a 4/0 cable and 8 8-volt batteries is not a pretty sight.
But of course Fleetwood and Bayliner have engineering teams a hell of a lot more intelligent than Caterpillar, Terex, Westinghouse, and Lockheed. Some of their PhD's can even espeak a little Eengles.
An acceptable quality cutoff switch mounted in an acceptable location can indeed safely handle switching battery positive. Wanna spend a few dozen hours chasing links I provide to see all those wonderful Blazing Dragon battery switches that can be broken with the palm of the hand? Recommending that positive be switched needs a couple of caveats to warn the unwary. I've got a lot of King Crabbers and Midwater Trawlers, never mind salmon boats floating around that are still using Cole Hersee switches installed 30 years ago. 32 volts shorted to the hull using a 4/0 cable and 8 8-volt batteries is not a pretty sight.
