Drawing off two banks thru Switch?
I have split my 430Ah bank into two 215's, and I will soon be installing a Blue Sea switch with 1, 2, or 'both' settings. I realized last night, my cheapo 700w Walmart microwave, which is rated at 105...
Forum Discussion
I drew a diagram of the two banks, thru the meter shunt and switch, to the inverter. It seems to me the "both" setting basically turns the two 215Ah banks (A+B) into a series / paralleled 430Ah bank, but with an unbalanced wiring set-up?
2 banks (A+B) side by side, A1 top left, A2 bottom left; B1 top right, B2 bottom right, shunt between A1 and B1:
A1+ to A2-; A1- to 1st shunt post; A2+ to switch pole A.
B1+ to B2-; B1- to 2nd shunt post; B2+ to switch pole B.
2nd shunt post to inverter(-).
Switch common to fuse, then inverter(+).
Comparison:
When switched to "both", inverter draws from both A+ and B+, instead of from one + lead from B2+ (when paralleled to A2+)... negs remain the same as they are paralleled thru the shunt.
(meter + to A2+, meter only tracks bank A)
2 banks (A+B) side by side, A1 top left, A2 bottom left; B1 top right, B2 bottom right, shunt between A1 and B1:
A1+ to A2-; A1- to 1st shunt post; A2+ to switch pole A.
B1+ to B2-; B1- to 2nd shunt post; B2+ to switch pole B.
2nd shunt post to inverter(-).
Switch common to fuse, then inverter(+).
Comparison:
When switched to "both", inverter draws from both A+ and B+, instead of from one + lead from B2+ (when paralleled to A2+)... negs remain the same as they are paralleled thru the shunt.
(meter + to A2+, meter only tracks bank A)
