Is it better to connect inverter directly to shunt or to bus bar? If so (or not) what cable size? Here is a diagram. I am figuring 1/0 which is 3X the 6 AWG connections at the bus if inverter is connected to shunt? Is this in the ballpark for how to set up? Going from no bus bars with 3 connections on battery #1 neg, battery #2 pos. Inverter is on battery #1 pos and battery #2 neg. (dealer install) Thanks in advance!
Current
Plan
Several mistakes:
plan:
Inverter goes directly on negative bus bar. Then negative busbar to shunt input. All 4/0 cable
positive:
inverter->disconnect switch inverter-> fuse -> busbar, inverter must have its own disconnect switch
all connection on positive busbar need a fuse, suggest to use lynx distributor that’s busbar and fuse holder in one.
battery positive terminal -> main cable fuse ->battery disconnect switch-> positive busbar, Cable 4/0.
Thanks! You answered my main question which was inverter to bus bar instead of shunt. Which will change 4/0 between bus bar and shunt. The inverter disconnect and fuse are already in place (i just didn't include on the diagram - sorry). Will match 4/0 to positive bus bar.. I wanted the main disconnect switch so i can stop the parasitic drain while in storage.
Also, still searching for best cable size for battery to battery parallel connections...I get 4 AWG to 4/0 AWG and everything between. Seems there would be a consensus for 2 100Ah Li batteries with a 2000W inverter. ie BB rep said 1/0 another said 4/0 and website said 2/0, others say 4 AWG, dealer said 2AWG...would love to know best practice. Thanks.
Think of the battery to battery connections in terms of the current they will carry.
For simplicity and safety, use the same guage as the battery to busbar connections.
