I'm planning an off grid ~4kW solar array, and am putting together a parts list. I plan on using the appropriate outdoor-rated 8awg cable in a conduit for the run between the array itself and where the cabling will enter the house. However, the array will be at the opposite side of the house from where the inverter/batteries will be installed. There is already an unused run of NMD90 6/3 cabling running almost exactly where I need it to. It would be very convenient if I could just use this existing cable instead of having to pull new cable across the entire house.
6awg is good for upwards of 50amps, and my array will likely be in a 8s1p configuration, operating at around 13amps. So voltage and amperage are within spec for the cable, and it's not being used outdoors. Is there any other reason I shouldn't use this existing run of NMD90 for the last ~50 feet of my PV circuit?
Thanks,
-A
6awg is good for upwards of 50amps, and my array will likely be in a 8s1p configuration, operating at around 13amps. So voltage and amperage are within spec for the cable, and it's not being used outdoors. Is there any other reason I shouldn't use this existing run of NMD90 for the last ~50 feet of my PV circuit?
Thanks,
-A