Originally Posted by Maine Sail
Switching of the positive conductor is part of the ABYC standards and a negative switched circuit will or should fail a survey if a competent surveyor is used...
Maine, it's interesting then that many commercial off-the-shelf bilge pump control panels (like the one below, currently fitted to my boat) are negative switched - that's one reason so many people have problems hooking them up!
1. Are you saying a commercial purpose-built product
doesn't meet the standards??
2. Do you seriously expect a competent surveyor to inspect the entire wiring system on a boat - looking for circuits that might be negative switched??
No. I didn't think so.