Double check my calcs here.
Adding new string of modules to existing two-string array of Mitsubishi 180 panels.
4 @ #10 THHN plus ground (2 strings) running 100-200 feet or so to DC disconnect and Inverter.
Because it is a ground rack way down the hill and conduit is already buried 10 years ago and wire pulled..... I aim to parallel combine the two existing strings into one at the array. This will then connect to just one of the existing pairs of #10 wires and free up the second pair for my new string.
(E) 2 @ 8.03A Isc, 7.45A Imp, 15A max fuse rating. (Mits. 180W) (combined: 16.06A Isc, 14.9A Imp)
(N) 1 @ 9.98A Isc, 9.50A Imp, 20A max fuse rating. (Hanwha Q CEll 310 DUO)
What, if any, fusing needed?
Adding new string of modules to existing two-string array of Mitsubishi 180 panels.
4 @ #10 THHN plus ground (2 strings) running 100-200 feet or so to DC disconnect and Inverter.
Because it is a ground rack way down the hill and conduit is already buried 10 years ago and wire pulled..... I aim to parallel combine the two existing strings into one at the array. This will then connect to just one of the existing pairs of #10 wires and free up the second pair for my new string.
(E) 2 @ 8.03A Isc, 7.45A Imp, 15A max fuse rating. (Mits. 180W) (combined: 16.06A Isc, 14.9A Imp)
(N) 1 @ 9.98A Isc, 9.50A Imp, 20A max fuse rating. (Hanwha Q CEll 310 DUO)
What, if any, fusing needed?