American Power Conversion MW manual General Specifications 480, Nema

General Specifications 480 V

Backfeed protection	Built-in in the UPS
Humidity	Max. 95% non-condensing
Protection class	NEMA 1
Safety	UL 1778 listed
Emission and immunity	FCC part 15, sub part J Class A (conducted/radiated)

Symmetra MW 1000 kW 480 V Installation - 990-4112E 37