Scenario 3; Sunlight Backup - enphase IQ System Controller 3 Quick Install Manual

Scenario 3

Partial Home backup with

Sunlight Backup

This is the preferred configuration for partial home backup using only
IQ8 PV i.e., Sunlight Backup. IQ Battery can be integrated with IQ System
Controller 3 based on the homeowner's needs.
It is recommended that installers use two IQ Load Controllers for
load control to ensure seamless backup of essential loads using
IQ8 Microinverters. At least one IQ Load Controller is required to
successfully commission a Sunlight Backup system.
Do not install a Sunlight Backup system for a whole home backup
scenario.
This configuration can only be supported with IQ8 Series Microinverters.
8
This figure shows the system configuration. For wiring,
follow the details in the wiring section.
IQ System Controller 3/3G Quick Install Guide