Lightning And Surge Suppression; Parts And Tools Required; Enphase Equipment - enphase IQ7 Installation And Operation Manual

Standard guidelines for voltage rise on feeder and AC branch circuit conductors might not be sufficient for
microinverter AC branch circuits that contain the maximum allowable microinverters. This is due to the high
inherent voltage rise on the AC branch circuit.
Best practice: Center-feed the branch circuit to minimize voltage rise in a fully populated branch.
This practice greatly reduces the voltage rise as compared with an end-fed branch. To center-
feed a branch, divide the circuit into two sub-branch circuits protected by a single OCPD.

Lightning and surge suppression

Enphase microinverters have greater integral surge protection than most traditional inverters. However, if the
surge has sufficient energy, the protection built into the microinverter can be exceeded, and the equipment
can be damaged. For this reason, Enphase recommends that you protect your system with a lightning and/or
surge suppression device. In addition to having some level of surge suppression, it is also important to have
insurance that protects against lightning and electrical surges. Enphase has tested the devices in the
following tables.
Residential
Citel DS72-RS-120 surge protector;
Delta LA-302 lightning arrestor;
Midnite solar surge protection device MNSPD-300
or MNSPD-300FM (with flush mount box);
NOTE: Protection against lightning and resulting voltage surge must be in accordance with local
standards.

Parts and tools required

In addition to the AC Modules, you will need the following:

Enphase equipment

• Enphase IQ Gateway communications gateway (ENV-IQ-AM1-240) is required to
monitor solar production. For installation information, refer to the Enphase IQ
Gateway Installation and Operations Manual.
• Enphase Installer App
•
Download the Enphase Installer App and open it to log in to your Enphase account. With this
mobile app, you can scan microinverter serial numbers and connect to the IQ Gateway
to track system installation progress. To download, go to
the QR code on the right.
• IQ Sealing Cap (Q-SEAL-10) for any unused drops on the IQ Cable.
• IQ Terminator (Q-TERM-10) typically, two are needed per branch circuit.
• IQ Disconnect Tool (Q-DISC-10).
• IQ Field Wireable Connectors (male and female: Q-CONN-10M and Q-CONN-10F) (optional).
• IQ Cable.
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datasheet
website
website
© 2023 Enphase Energy Inc. All rights reserved.
IQ Microinverters for AC Module applications
Commercial
Citel DS73-RS-G surge protector;
Delta LA-303 lightning arrestor;
enphase.com/toolkit
datasheet
website
or scan
June 2023
USM-00001-1.0