Planning For Microinverter Installation; Compatibility; Grounding Considerations; Branch Circuit Capacity - enphase IQ8 Installation And Operation Manual

Planning for microinverter installation

The IQ8 Microinverter is compatible with 60-cell PV modules, and the IQ8+, IQ8M, IQ8A, and
IQ8H Microinverter support PV modules with 54, 60, 66, or 72-cell PV modules. 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, refer to
Enphase IQ Cable Planning and

Compatibility

The IQ Series Microinverters are electrically compatible with PV modules, as listed in the following
table. For specifications, refer to
Compatibility Calculator at
module electrical compatibility. To ensure mechanical compatibility, be sure to order the correct
connector type for both the microinverter and PV module from your distributor.
WARNING: Risk of fire. The PV module DC conductors must be labeled "PV Wire" or "PV
Cable" to comply with NEC for ungrounded PV power systems.
Microinverter
model
IQ8-60-2-US
IQ8PLUS-72-2-US
IQ8M-72-2-US
IQ8A-72-2-US
IQ8H-240-72-2-US
IQ8H-208-72-2-US

Grounding considerations

The 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.

Branch circuit capacity

Plan your AC branch circuits to meet the following limits for a maximum number of microinverters
per branch when protected with a 20 amp (maximum) overcurrent protection device (OCPD).
12
Enphase IQ8, IQ8+, IQ8M, IQ8A, and IQ8H Microinverters
Ordering.
Technical Data
enphase.com/en-us/support/module-compatibility
Connector type
To meet compatibility, PV modules must be within the
following maximum input DC voltage and maximum
MC-4 locking
module Isc.
type
Module compatibility can be checked at
https:/
© 2024 Enphase Energy Inc. All rights reserved.
in this manual. You can refer to the Enphase
PV module cell count
/enphase.com/installers/microinverters/calculator.
.
to verify PV
January 2024
IOM-00068-1.0