Two 12v inverters (1000w & 2000w) off 12v battery bank (3 12v in parallel) possible?
- Thread starter nick777
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12VoltInstalls
life passes by too quickly to not live in freedom
If you have 300Amp cables from the batteries to busbar, busbar is 300A+; or busbar is 300A+ and batteries are parallel at busbar.
Yes. But they won’t last long at 3000W.
And you cannot connect the 120VAC outputs to each other.
You will need 2/0 for the 2000W and 1/0 for the 1000W. 2/0 to the 2kW being a tad ‘small,’ 1/0 to the 1000W being what I’d use.
And lithium? Lead?
You will need a 125A Class T fuse at each battery and 1ga cables from each battery to busbars.
Busbar should have five 5/16” (8mm) studs each to “do it right” although I can envision how you might do it with four studs- but I don’t recommend that.
Yes. This is exactly how I have my system set up. 3 206ah SOK 12v batteries in parallel and then a multiplus 12/2000/80 and also a pheonix 12/1200. I also feed the output of the Pheonix into the AC in on the multiplus and then program the Pheonix to turn on when the load on the multiplus gets over 50% or about 800W. That way both inverters will share the load when the loads are higher. Works great. I have 2/0 feeding my main bus bar. 2AWG going to the 2000w inverter and 2AWG going to the 1000w inverter. The 2000w inverter never sees loads over 800w and the 1000w inverter never sees loads over 600w. Cables never get hot.
Awesome, thanks for the feedback guys. My batteries are Hawker 820a industrial forklift batteries and plan to use most of the load for a small mini split on the (2000w inverter) and for home office (1000w inverter) during peak sun hours. I'll need to pick up some cables, busbars and fuses.
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