Building new solar setup... Have four EG4 LifePower4 48V 100AH batteries connected in parallel in a rack. I also have a Growatt 12kW 48V off-grid inverter. I've completed the A/C connections on inverter. So now it's time to connect the battery array to the inverter. A few quick questions...
1) I'm planning A/C draw from inverter to be about 6kW (240V). On the battery side (say 50V to make math quick), would that translate to 120 Amp so maybe a 150A Class T fuse?
2) Part of my power draw is a well with a quick in-rush current of about 73A at 240V. Does that short lived in-rush current translate to a short lived current draw exceeding the 150A current from question 1? (73A*240V)/50V = 350A! Or does in-rush current not factor in?
3) What gauge wire from battery bank to inverter? The manual says 3*2 gauge. I assume this means THREE sets of 2 gauge wire for each connection? That's probably assuming running the inverter at absolute maximum. Would 2 sets of 2 gauge wire be adequate? Or is 1 set of wires enough?
4) While I figure out the wire/fuse and get it ordered, would it be ok to just use some 10 gauge Romex I have to TEMPORARILY hook the batteries to the inverter (WITHOUT ANY INVERTER LOAD)? I just want to power up the inverter so I can take some time to setup it's settings, wifi, etc. while I wait for the permanent wire and fuse. I think the inverter only draws 250V when no load.
1) I'm planning A/C draw from inverter to be about 6kW (240V). On the battery side (say 50V to make math quick), would that translate to 120 Amp so maybe a 150A Class T fuse?
2) Part of my power draw is a well with a quick in-rush current of about 73A at 240V. Does that short lived in-rush current translate to a short lived current draw exceeding the 150A current from question 1? (73A*240V)/50V = 350A! Or does in-rush current not factor in?
3) What gauge wire from battery bank to inverter? The manual says 3*2 gauge. I assume this means THREE sets of 2 gauge wire for each connection? That's probably assuming running the inverter at absolute maximum. Would 2 sets of 2 gauge wire be adequate? Or is 1 set of wires enough?
4) While I figure out the wire/fuse and get it ordered, would it be ok to just use some 10 gauge Romex I have to TEMPORARILY hook the batteries to the inverter (WITHOUT ANY INVERTER LOAD)? I just want to power up the inverter so I can take some time to setup it's settings, wifi, etc. while I wait for the permanent wire and fuse. I think the inverter only draws 250V when no load.