IQ8MC/IQ8AC/IQ8HC Installation and Operation Manual
10 © 2023 Enphase Energy Inc. All rights reserved. September 2023
IOM-00029-1.0
2. Planning for microinverter installation
The IQ8MC, IQ8AC, and IQ8HC Microinverters support PV modules with 54-cell/108-half-cell, 60-
cell/120-half-cell, 66-cell/132-half-cell, and 72-cell/144-half-cell configurations. No enforced DC/AC
ratio and maximum input power. Modules can be paired if the maximum input voltage is not exceeded
and the maximum input current of the inverter at the lowest and highest temperatures is respected.
See Enphase Compatibility Calculator
.
IQ8 Series Microinverters install quickly and easily. The microinverter housing is designed for outdoor
installation and complies with the IP67 environmental enclosure rating standard.
IP67 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
Enphase IQ Cable Planning and Ordering
.
Compatibility
The IQ8 Series Microinverters are electrically compatible with PV modules, as listed in the following
table. For specifications, see Technical Data
. You can refer to the IQ Field Wireable Connector at
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 male/female connector.
IMPORTANT: The IQ8 Series Microinverters include both AC and DC connectors integrated into the
bulkhead. The AC port connects to IQ Cable or Enphase Field Wireable Connector. The DC port has been
evaluated by TUV for intermatability with Stäubli made MC4 connectors, whose cable coupler models are
"PV-KST4/…-UR, PV-KBT4/…-UR, PV-KBT4-EVO2/…-UR, and PV-KST4-EVO2/…-UR". The DC port of the
inverter must be mated with Stäubli made MC4 connectors.
WARNING: Risk of fire. The DC conductors of the PV module must be labeled "PV Wire" or "PV
Cable" when paired with the Enphase microinverter.
Microinverter model Connector type PV module cell count
IQ8MC-72-M-INT Stäubli MC4
Pair with 54-cell/108-half-cell, 60-
cell/120-half-cell, 66-cell/132-half-cell,
72-cell/144-half-cell
IQ8AC-72-M-INT Stäubli MC4
IQ8HC-72-M-INT Stäubli MC4
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 Installation and Operation Manual at
https://enphase.com/en-gb/installers/resources/documentation
Earthing considerations
The microinverter 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. Refer to local
electrical codes and standards for earthing requirements of PV array and racking.
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