Designed for residential applications, these 100A, 200A, and 400A electric submeters are perfect for metering electric consumption or production for nearly any 120V 2-wire or 120/240V 3-wire application. These revenue-grade single phase (120V 2-wire or 120/240V 3-wire) kWh electric meters make tenant submetering a snap! Available in indoor flush-mount, outdoor surface-mount, or NEMA 4X Multiple Meter Units (MMUs).