The Leviton Series 1000 120/208/240V 100A 2PH, 3W, WYE Indoor UNIT ONLY is an electrical submeter / energy meter kit designed for indoor use. This unit has a maximum amperage rating of 200A and operates on 120/240V AC. With its WYE configuration and 3-way switching, this model (1K240-2W) is ideal for monitoring and controlling electrical power in commercial or industrial settings.