Ctay005
Member
- Location
- Orem, Utah, USA
I'm currently working on a smaller commercial project with 80 345w panels and IQ6 plus micros. It's been a while since I've messed with 3 phase and had a question concerning the neutral and ground sizing coming out of the combiner panel.
There are 8 strings of 10 modules, each one is a 20A circuit feeding into a combiner panel for 160A total. After this it is going into a XFMR to step the voltage up to 240 delta to match the service. Does the neutral need to be sized the same as the phase conductors or can it be smaller since ideally it shouldn't see any current?
There are 8 strings of 10 modules, each one is a 20A circuit feeding into a combiner panel for 160A total. After this it is going into a XFMR to step the voltage up to 240 delta to match the service. Does the neutral need to be sized the same as the phase conductors or can it be smaller since ideally it shouldn't see any current?