electrofelon
Senior Member
- Location
- Cherry Valley NY, Seattle, WA
Near the top of my list of frustrations with the PV industry is the Inverter neutral conductor (note for the purpose of this I am referring to mid to large size PV systems using 480V string inverters). I do have a bit of good news I would share in case any of y'all were not aware. Please help spread the word so we can get all manufacturers on board. Both Solectria and Chint state specifically that 705.95(B) can be used for neutral sizing (I have known about the Solectria's for a while). But wait it gets better. They also state that you may just run an EGC and jumper it over to the neutral terminal. Unfortunately, There are still many manufacturers who have their head in the mud: SMA, sungrow, huawei. Fronius sort of states it: They say the neutral only needs to carry 1 amp, but do not dont allow skipping the neutral all together. If the manufacturer hasnt been mentioned here, I havent checked. I can only take so much reading thru manuals.