3-way frigs work by heating. Heating elements on 12 volts(or 120) draw a LOT of power.
On 12 volt they often draw 10 amps continuous plus some have a controller that always is in use (even for the propane!) that draws 1 to 1.5 amp(12 volt).
Just walking on the edge of of my grave.
Last edited by hiwall; 05-17-2013 at 07:24 PM.