Hoping someone can point me in the right direction. I have x2 MP2 5KVA in parallel. When I wired them up I read that all AC/DC cables, breakers, etc have to be identical which I did, everything been working great last couple years.
Now I'm trying to heat hot water with surplus solar I have setup relay assistants on each MP2 to close relay AC OUT2 when SOC reaches 98% and to open relay at 95% so batteries are not drained too much.
My question is does the cabling coming from AC OUT2 to the AC circuit breaker 16A (then on to 2.5KW immersion heater) need to be identical on both units like the other cables or can I just use one MP2 output to feed the immersion.
Any help much appreciated