I occasionally install PV equipment which is covered in article 690. I am struggling over the interpretation of article 690.31 (E). In the NEC 2011 edition, it reads Where dc photovoltaic source or output circuits from a building-integrated or other photovoltaic system are run inside a building or structure, they shall be contained in metal raceways, Type MC metal-clad cable that complies with 250.118(10).......
On the systems I install the DC source voltage from the panels goes to an inverter which turns that voltage to AC at the panel. The voltage from the panels is AC from that point to the first disconnect. Since the inverter is panel mounted, would a metal raceway of somekind be necessary inside a building or structure?
On the systems I install the DC source voltage from the panels goes to an inverter which turns that voltage to AC at the panel. The voltage from the panels is AC from that point to the first disconnect. Since the inverter is panel mounted, would a metal raceway of somekind be necessary inside a building or structure?