IQ8 Commercial Microinverter grid-tied PV system
68 © 2023 Enphase Energy Inc. All rights reserved. November 2023
USG-00026-1.0
o If the number of microinverters connected to C1, C2, and C3 types of
connectors is not the same, refer to local AHJ rules for acceptable phase
imbalance across the system.
o Enphase Installer App provides phase connection details during the array
builder or commissioning process. Validate your imbalance expectations
through the Enphase Installer App.
o Enphase Installer App shall be able to share a consolidated report of all microinverters
with each phase connection.
Figure 47: Enphase Installer App phase connection
10 Appendix C: Specifications
10.1 IQ8 Commercial Microinverters
INPUT DATA (DC)
IQ8P-3P-72-2-US IQ8H-3P-72-2-US
Commonly used modules for pairing
1
380 W-640 W 320 W-540 W
Module compatibility
1
54-cell/108 half-cell, 60-cell/120
half-cell, 66-cell/132 half-cells, and
72- cell/144 half-cell
54-cell/108 half-cell, 60-cell/120
half-cell, 66-cell/132 half-cells, and
72-cell/144 half-cell
Maximum input DC voltage 63 V 63 V
Peak power tracking voltage
35.5-53 V
28.5-45 V
Operating range 16-63 V 16-63 V
Min/Max start voltage 22/65 V 22/65 V
Max DC short circuit current
20 A 20 A
Overvoltage class DC ports II II
DC port back feed current 0 A 0 A
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