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I have had 2 VFDs on the same piece of equipment go bad by an apparent line to line short circuit. It destroyed the line contactor, tripped the motor circuit breaker, the feed circuit breaker, and the main circuit breaker feeding the panel. Motor was meggered line to line, and line to ground...

I have a sentrol industrial 1082-N surface mount magnetic switch with wire leads https://www.clrwtr.com/Products/1082-N . I'm not sure which wire is the + and which wire is the -? Any help would be greatly appreciated.