Posted December 6, 20213 yr Hi All, Please refer to the two wiring options below: 1. Is there a benefit to using option 1 vs the more common method in option 2? 2. In option 2, does the + & - cables going to the inverter have to be the same length? Thanks!
December 6, 20213 yr Firstly, when paralleling it's ideal to keep cable lengths the same. But option 1 would have lower cable losses. By that I mean there is a voltage drop in the cable. The higher the current the more the loss. Having two cables = lower resistance = lower losses. Option 2 also seems to promote the idea of shorter cables which would mean one battery has a tiny bit higher resistance which could measure as a small discrepancy between how much current comes from one battery vs the other. Edited December 6, 20213 yr by Gnome
December 6, 20213 yr Seem to recall Option 1 is for >100A and Option 2 is for <100A. Mine is connected like Option 2, but considering those Shotos are 1C, peak current can reach 200A (if the inverter is set up like that) and Option 1 would be better.
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