I have a question on tying the ac wires for two Inverters in Parallel (fyi 2x Phoenix Inverter 24/3000 but this is a general wring question). The Victron Wiring shows the A & N of Inverters linked to a common point or bus and not individually protected by a circuit breaker. Is there any reason a Circuit Breaker from each Inverter is not shown in Victron drawings? or is not Advised?
I cannot see an issue with having a MCB per output from the inverters, if that is your desire. However, the Inverters once linked and programmed properly should act as 1 large inverter, and so a single MCB after the junction should also be acceptable.
Hope that helps.
OK Thanks, I did just find in a victron doc last night that each inverter a/c does indeed need to be fused individually. It makes note that the same type of fuse on each unit is required for same resistance(obviously) and to consider using mechanically connected fuses? I take that as meaning circuit breakers may not be ideal with possible differences in resistance with internals and contacts.
I will go that rout and use fixed fusing not c/b on the inverters and an RCD or RCBO on the main feeder line.
If i just relied on a main MCB after the junction as you suggest then that would mean up sizing all wiring from inverters to be same as the main line which then goes against Victrons other advise of not over sizing the AC wiring!
Explanation- I will have 2.5mm2 (in fact 1.5mm2[25A@105C] would do it but the inverter manual states 2.5mm2[35A@105C) going to the main feeder line of 4.0mm2 to my boats switchboard, If i didn’t fuse the inverter lines then it all has to be 4.0mm2 to be protected by the main fuse rating, *see where i’m coming from? This has been my conundrum but i will now fit fixed fuses to inverters and c/b only on the main line, Done:0)