DPDT Switch for Battery Bank
I have a WFCO Converter (110 to 12) and a power panel (12V and 110v) with my travel trailer. One side is fed 110 v and the 12V panel is fed from the single 12V battery on the trailer tonque. I am in...
Forum Discussion
You do not need a DPDT switch, you may connect all the chassis ground (Negative) leads and simply switch the positive with the PERKO roatary switch someone posted above. No need for a DPDT. since breaking either lead breaks the circuit and isolates the battery.
NOTE. Though you might think this applies to the 120 volt side of life as well, and in some cases it does, NOT true for sorurce of power (Mains/Generator) there you DO need to break both lines. (DPDT break before make or 3PDT Likewise if 50 amp)
One thing the two sides have in common, on the 120 volt side the green/bare wire is also a chassis ground (And in this case EARTH ground), you don't need to break that, you can have that lead common from all sources.... Though inverters often break/transfer it as well.
NOTE. Though you might think this applies to the 120 volt side of life as well, and in some cases it does, NOT true for sorurce of power (Mains/Generator) there you DO need to break both lines. (DPDT break before make or 3PDT Likewise if 50 amp)
One thing the two sides have in common, on the 120 volt side the green/bare wire is also a chassis ground (And in this case EARTH ground), you don't need to break that, you can have that lead common from all sources.... Though inverters often break/transfer it as well.
