10-06-2012, 06:27 AM
quote:
Originally posted by Bullwinkle
This stuff tends to be pricey - couple of hundy on the low end in my experience. search for "automatic transfer switch" usually start out at about 100 amps.
how big of a load are you switching - another factor will be current draw - are you ok with the switching / sensing element drawing down the 12 volt side? does it need to be UL approved or will something home made do?
I have some bits and pieces laying around if you get stuck.
What I'm thinking (just a thought process and not a "project", at least not yet) is to run something, say a small refrigerator, off a PV/battery setup and since there is not enough juice from the sun to run it full time, have it default back to the grid when the sun isn't out.