Schematic diagram of energy storage AC combiner cabinet

What is the AC combiner box?

The AC Combiner Box combines up to three AC branch circuits of Enphase Microinverters. The Envoy-S operates as a gateway between the Enphase Microinverters and the Enphase® Enlighten web-based monitoring and analysis software. The Envoy-S monitors the microinverters that are connected to the PV modules.

How do I replace an AC combiner box?

If Customer Support authorizes an AC Combiner Box replacement (RMA), perform the following steps. Turn off power to AC combiner box at the main load center. Verify that all power is removed from the system before attempting any wiring. Open the AC Combiner Box door.

What is an AC combination box?

The AC Combiner Box is an outdoor-rated, NRTL-certified NEMA type 3R, polycarbonate enclosure containing an Enphase Envoy-S, circuit breakers, and wiring for Envoy-S connections. The AC Combiner Box combines up to three AC branch circuits of Enphase Microinverters.

How do you wire an AC combiner box?

Turn off power to AC combiner box at the main load center. Verify that all power is removed from the system before attempting any wiring. Open the AC Combiner Box door. Remove the clear plastic dead front, and keep the screws and washers in a safe place. Measure voltage L1 to L2, L1 to N, and L2 to N to make sure there is no voltage present.

How do I install the AC combination box?

While holding the AC Combiner Box in place, remove any mounting hardware holding the box in place, and lift the box away from the mounting surface. Ship the removed AC Combiner Box to Enphase using the supplied RMA shipping label. Follow the steps in “Installing the AC Combiner Box” starting on page 11.

How do I connect a AC combiner?

Insert the AC main cables through the designated holes at the bottom of the enclosure into the combiner box. ►Make sure the wires pass through their designated cable gland with their thread in correct position.