AC output fusing to panel?

[Joes_Going_Solar]

I am working on setting up a grid passthrough system using 4 Victron Multiplus II 48/5000/70-95's. It will be the typical grid panel circuit breakers feeding Victron units then those feeding circuit breakers in a Sub panel where I will have my loads connected. My question is should I add a fuse or circuit breaker in between the inverters and the breakers in my sub panel? There will probably be ~15 feet of wire from the inverters to the sub panel in conduit.

 

[hwy17]

I would just use a main breaker on the CLP. Or, if it doesn't have provision for one, backfeed the CLP through a breaker.

That is, if the sum of the AC load breakers on the CLP amounts to greater than the ampacity of the Inverter to CLP wiring. If they don't, then I would be ok operating without a feeder breaker.

 

[Joes_Going_Solar]

The CLP will be fed with 2 50A double pole breakers as its only a 125A panel, the wires will be protected from overload of the panel but not if there was a short in between the inverter and CLP.