Using a 3-Phase Energy Meter for Solar PV and Grid Consumption in a Split-Phase System

Phases A and B are utilized to monitor the two-phase grid, while phase C is dedicated to monitoring the split-phase inverter output. Ordinarily, two phase channels are needed to measure the inverter's two-phase output. However, due to the balanced nature of the two-phase output, a single phase suffices for measuring the inverter output. This is achieved by internally configuring the meter to double the reading obtained from that single phase.

For more details, please refer to https://www.iammeter.com/newsshow/blog-solar-grid-split-phase

Split-Phase System Wiring

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