IQ8MC, IQ8AC, IQ8HC, and IQ8X Microinverters Installation and Operation Manual
11 © 2023 Enphase Energy Inc. All rights reserved. November 2023
USM-00008-2.0
Planning for microinverter installation
All of them install quickly and easily. The microinverter housing is designed for outdoor installation and complies
with the NEMA 250, type 6 environmental enclosure rating standard.
NEMA 6 rating definition: Indoor or outdoor use primarily to provide protection against hose-directed
water, the entry of water during occasional temporary submersion at a limited depth, and damage
from external ice formation.
The IQ Cable is available with connector spacing options to accommodate the installation of PV modules in portrait
or landscape orientation. For IQ Cable ordering information, see Enphase IQ Cable planning and ordering
.
Compatibility
The IQ8 Series Microinverters are electrically compatible with PV modules, as listed in the following table. There is
no enforced DC/AC ratio and maximum DC input power limit. Modules can be paired if the "Open Circuit Voltage
(V
OC
)" and "Short Circuit Current (I
SC
)" of the PV module at the extreme temperatures (lowest temperature for
voltage and highest temperature for current) do not exceed the microinverter's "Max. Input DC voltage" and "Max
Module I
SC
" specifications respectively. For specifications, see Specifications. You can refer to the Enphase
compatibility calculator to verify PV module electrical compatibility. To ensure mechanical compatibility, the
microinverter's male and female connectors must only be mated with the identical type and brand of the male and
female connectors.
WARNING: Risk of fire. The DC conductors of the PV module must be labeled "PV Wire" or "PV Cable" to
comply with NEC for Ungrounded PV Power Systems.
Microinverter model
Module compatibility
IQ8MC-72-M-US
Stäubli MC4
To meet compatibility, PV modules must be within the
following maximum input DC voltage and maximum module I
sc
Module compatibility can be checked at
https://enphase.com/installers/microinverters/calculator.
IQ8AC-72-M-US
IQ8HC-72-M-US
IQ8X-80-M-US
NOTE: Some Enphase microinverters will not export power until the IQ Gateway is installed and all the
microinverters are detected at the site. Additionally, the grid profile must be configured, and the IQ
Gateway must have propagated these settings to the microinverters. For instructions on this procedure,
refer to IQ Gateway Installation and Operation Manual.
Grounding considerations
The Enphase microinverter models listed in this guide do not require grounding electrode conductors (GEC),
equipment grounding conductors (EGC), or grounded conductor (neutral). Your authority having jurisdiction (AHJ)
may require you to bond the mounting bracket to the racking. If so, use UL2703 hardware or star washers. The
microinverter has a Class II double-insulated rating, including ground fault protection (GFP). To support GFP, use
only PV modules equipped with DC cables labeled "PV Wire" or "PV Cable."
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