silverstone
Solar Enthusiast
- Joined
- May 3, 2022
- Messages
- 1,041
Look at the Deye datasheet. Battery current is limited to 250A. The 12kW is the grid interface I guess or the PV interface, I think they don't assume the interter to be fully sized for "off grid" mode.12000 ac watts / .85 conversion efficiency / 48 volts low cutoff = 294.117647059 inverter amps
294.117647059 inverter amps / .8 fuse headroom = 367.647058824 fuse amps
367.647058824 fuse amps * 3 inverters = 1,102.941176471 busbar amps
Just for reference the lynx distributor busbars are 8mm * 30mm = 240mm2
But yeah, I'd plan on a 1000A busbar to have some headroom.
Victron Lynx 8x30mm I'm not so sure if it's just marketing or it can really do it... It seems a bit small, especially for some enclosed/insulated space.