I have a switch I'm putting in, actually putting back in which when in the off position causes the breaker panel to trip and I'm completely stumped.
I have tried two switches, with both appear to be Cole Herse brand pull switches. They have two single
screw terminals on the back. They are not labeled pos or neg on either terminal.
Background on the wiring
P.O. was into soldering and taping over inline splices and other (IMHO) less reliable connections. I have been going around and cleaning
these up by putting in terminal blocks and heatshrink glue ring terminals on the ends of the connections.
THis circuit in particular is my water
pressure system. In this circuit there are two pumps oner for my fresh water
and it on\off when the breaker is on\off. The second pump is my anchor
washdown pump, and it is intended to be on\off based on the switch.
The feed wire from the breakers goes to a terminal block.
From this block the fresh water pump is connected. Another 30' run of Ancor 12awg marine
grade\tinned wire runs to the bow. Here, I wired the pos wire from the feed wire and the pos wire from the pump to one terminal on the switch and the neg wires from the feed wire and pump to the other terminal.
If I place the anchor
washdown switch in the ON position and turn on the breaker the anchor washdown pump runs fine and I can also run the fresh water pump simultaneously.
If I place the anchor washdown switch in the OFF position and turn the breaker on, the DC amp indicator spikes up and then the breaker trips, the pump does not run.
If I remove the switch and just let the feed line to the anchor washdown sit unconnected the fresh water pumps works fine.
Thanks for the help, I'm sure this is something obvious to more experienced electrically skilled folks.