IQ System Controller System Shutdown – North America
2 © 2021 Enphase Energy Inc. All rights reserved.
Please Note: We recently simplified our product and services naming across the Enphase Energy
System. For a quick reference chart to map old names to new, please visit this article.
The intent of this article is to illustrate the different methods to override the Enphase Energy Systems.
This article does not deal with the Rapid Shutdown requirements which is required by the 2014 NEC. To
understand the Rapid shutdown requirement please refer to the FAQ in the Enphase webpage
https://community.enphase.com/s/article/Rapid-Shutdown-FAQs
Manual over ride is a way of bypassing the Enphase Energy systems in order to carry out maintenance of
the home, grid or to shut down the Enphase energy systems.
There are 3 ways of doing manual override supported by Enphase Energy Systems. They are
1. Enphase Energy System Shutdown switch for bypass
2. System Controller Manual over ride procedure
3. Manual Transfer switch for bypass.
Each of these methods are different and will not shut down the Enphase Energy Systems or the grid
power. Those must be switched off separately. The Manual Override will assure that the Enphase energy
systems no longer connected to the home and the home is safely connected to the grid.
Before doing any maintenance, the technicians should understand if there is power flowing in from any
other systems which might be connected outside of the Enphase Energy systems and take adequate
precautions for disconnecting the right circuits and wearing protective gear before starting the
maintenance work.
1. Use Enphase System Shutdown for Bypass
When the Enphase storage system needs service, installer or homeowner can choose to bypass the
Enphase storage system to connect the home to the grid. System shutdowns could be done in order to
achieve any one of the 3 following use cases
1. Conduct maintenance / repair activities for the home, during which there should not be any power
supply from any source (Grid/Solar/Storage/Generator)
2. Conduct maintenance of the grid when there should not be any back feed
3. Maintenance of the Enphase systems components.
The first 2 maintenance are likely to involve technicians who are not trained to operate Enphase systems.
For this reason, there is a need to have a very simple, single point shut down which will be easily
accessible and identifiable for 3
rd
party technicians to use to disconnect the Enphase systems from the
home and the grid. This will involve disconnecting all the energy sources and connecting the home to the
grid directly.
In the current generation of the System Controller the process of shutting down the Enphase system to
enable servicing has been made easier than ever before.
The System Controller will now enable wiring Enphase Energy System Shut down switch, which goes
with the SKU name EP200G-NA-02-RSD which will be a single point Enphase System Shut down switch.
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