Why not install current-activated relays on the circuits to the pumps, and use them to turn on lights or whatever?

Something like these:

http://www.ssac.com/catalog/ECS01A01.pdf

With these, you can do all your wiring back in the shop, and not need to bring additional wires back from the pumps (avoiding the hazardous location sealing issues).

Last edited by NJwirenut; 04/26/07 02:52 PM.