Planning For Microinverter Installation; Compatibility; Grounding Considerations - enphase IQ8MC Installation And Operation Manual

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 a degree of 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
28.

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
and "Short Circuit Current (I
highest temperature for current) do not exceed the microinverter's "Max. Input DC voltage" and "Max Module I
specifications respectively. For specifications, see "Specifications" on page 31 of this manual. You can refer to the
Enphase compatibility calculator at:
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
IQ8MC-72-M-US
IQ8AC-72-M-US
IQ8HC-72-M-US
NOTE: Some Enphase microinverters will not begin exporting power until the IQ Gateway is installed and
has detected all the microinverters at the site. In addition, the grid profile needs to be configured, and the
IQ Gateway must have propagated these settings to the microinverters. For instructions on this procedure,
refer to the IQ Gateway quick install guide at
https://enphase.com/installers/resources/documentation.

Grounding considerations

The Enphase microinverter models listed in this guide do not require grounding electrode conductors (GEC),
equipment grounding conductors (EGC), or grounded conductors (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 itself has a Class II double-insulated rating, which includes ground fault protection (GFP). To support
GFP, use only PV modules equipped with DC cables labeled "PV Wire" or "PV Cable."
12
IQ8MC/IQ8AC/IQ8HC Microinverters Installation and Operation Manual
)" of the PV module at the extreme temperatures (lowest temperature for voltage and
SC
https://enphase.com/installers/microinverters/calculator
Connector type
To meet compatibility, PV modules must be within the
maximum input DC voltage and maximum module Isc listed
Stäubli MC4
Module compatibility can be checked at
https://enphase.com/installers/microinverters/calculator.
© 2023 Enphase Energy Inc. All rights reserved.
"Enphase IQ Cable planning and
Module compatibility
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ordering" on page
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to verify PV module
October 2023
USM-00008-1.0