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Battery cable question for large Amperage

wsaharem

New Member
Joined
Jun 14, 2023
Messages
57
Location
Texas
I've purchased 2 Rosie's and am trying to figure out the battery cable path to the Rosie's. With 1 battery and 1 Rosie, it's pretty straight forward, but when doubling both the batteries and the Rosies, the amperage draw could be pretty significant. So with 2 Inverters and 2 batteries, I'm thinking about putting a Victron power distributor to balance the amp load versus 2 batteries in series with 1 cable with an optional 700A draw. (ouch).

This would give me 2 batteries with a normal consumption of 200A, and a surge of 350A. (or x2 of 700A!). So if I add the Victron and 2 batteries in and 2 out to the inverters, that drops the amp draw, but the surge could be 350A.

4/0 seems to handle 200A, but I could see 350A. Am I looking at this right? Do I need to looks for something bigger than 4/0?

Thanks!
Bill
 
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