enphase IQ System 3 INT Quick Install Manual page 2

Introduction
The IQ System Controller 3 INT connects the home to the
electricity grid, the IQ Battery storage system, and solar PV.
It provides automatic transfer switch (ATS) functionality by
automatically detecting and seamlessly transitioning the home
energy system from grid power to backup power in the event of a
grid failure.
It consolidates interconnection equipment and a communication
gateway into a single enclosure and streamlines the grid-
independent capabilities of PV and storage installations by
providing a consistent, pre-wired solution.
The IQ System Controller 3 INT supports IQ8, IQ7, and (in
Australia and New Zealand) S Series Microinverters.
The supported earthing systems are TN-C-S, TN-S, and TT. The
earthing systems that are not supported are TN-C and IT.
To install the IQ System Controller 3 INT, read and follow all
warnings and instructions in this guide and documents at
http:/ /enphase.com/support.
Safety warnings are listed at the end of this guide. These
instructions are not meant to be a complete explanation of how
to design and install an energy storage system. All installations
must comply with national and local electrical codes and
standards. Only Enphase-certified installers shall install,
troubleshoot, or replace the IQ System Controller 3 INT.
IQ System Controller 3 INT quick install guide 2