enphase IQ8 Installation And Operation Manual page 23

Enphase IQ8, IQ8+, IQ8M, IQ8A, and IQ8H Microinverters
Enphase Energy System PV solar grid agnostic
In the PV solar grid, agnostic configuration in the Enphase Energy System, IQ System Controller smart
switch is installed on the line-side of the main load panels. This allows a properly sized Enphase Energy
System to provide power to all loads in the main load panel in the event of a grid outage and PV solar
presence. In this configuration, the IQ System Controller can be configured with a main breaker to act
as the service disconnecting means. The PV system shall be interconnected to the
IQ System Controller on a dedicated breaker. This configuration typically supports larger PV system
sizes and may allow avoiding expensive utility service and/or main service panel upgrades.
System commissioning for a grid-agnostic configuration should be done with grid power present.
During IQ8 PV installation, ensure all relays are open from the main panel and IQ System Controller.
When commissioned, the IQ System Controller gets powered on from the grid side of the MID
(microgrid interconnect device); it closes the MID relay and PV relay. IQ8 PV shall start producing
power in grid-tied mode with IQ Gateway power on. Follow the Enphase Energy System
commissioning process using the Enphase Installer App for system commissioning.
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