- May 1, 2021
Your setup is similar to mine except I only have one 12K unit.In the attached, I updated the wiring diagram to include a bank of 6 EG4 batteries (48V, 100ah each) in parallel in the metal EG4 battery rack with the integrated busbars. Each EG4 has a 125A breaker built-in. I plan to run 4/0 wire connecting the busbars to the two parallel stacked Sol-Ark 12Ks (via multi-tap connectors). Each SA 12Ks has a 250A battery breaker.
I use a 250A breaker. I am cant remember the brand but I think it's the same as the Schneider DC breaker.Questions:
1) Is a DC disconnect required between the battery rack and the SAs? If so, what size disconnect and type (fuse vs. breaker) would you suggest? Any suggested brands/links would be appreciated.
Link: 250A DC Breaker
I would ground it.2) Does the battery rack need a ground wire? The batteries are screwed into the rack, so I believe they would be considered grounded to the rack.
Call Sol-Ark, I have not used an Arc-Fault breaker.Sol-Ark manual says to "install a subpanel for backup loads if you have Arc-Fault / GFI breakers, NOT a multi-circuit transfer switch. Can someone help me understand, why that is so? I do have AFCI breakers in the main breaker panel. Is that a problem if I keep the current design (see attached)?
Ask @FilterGuy or @Dzl they might be able to help you there.Are there any issues with the diagram that the permit office might take issue with?