Name: enphase IQ8P-3P-72-E-US
Brand: enphase
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DESIGN GUIDE

IQ8 Commercial Microinverter

grid-tied PV system design guide

Corporate Headquarters Contact Information2
FCC Compliance2
Other Information2
Audience2
Table of Contents3
Important Safety Information6
Read this First6
Product Labels6
Safety and Advisory Symbols6
IQ8 Commercial Microinverters Safety Instruction7
Enphase IQ8 Commercial PV System10
IQ8 Commercial Microinverters System Components10
IQ8 Commercial System Design Considerations12
IQ8 Commercial Microinverters12
Module Compatibility12
Enphase Frame Mount Bracket13
DC Connector Intermatability13
Number of Microinverters Per Branch Circuit14
Grounding Considerations14
AC Cable and Accessories14
Three-Phase QD Cable Specifications, Cable Types, and Ordering Options15
Design Considerations for QD Cable Selection16
Design Considerations for QD Accessories17
Design Considerations for Voltage Rise19
Recommendations19
IQ8 Commercial Vrise for 208 VAC in QD Cable20
Center Tap Connection Scenarios21
Advantages of Center Feeding QD Cable AC Branch Circuit22
IQ Gateway Commercial 223
Wiring IQ Gateway Commercial 2 ENV2-IQC2-AM3-3P for Three-Phase Applications24
Design Considerations for Reliable PLC Communications24
Design Considerations for Sites with Power Export Limit Requirements25
Multiple Gateway Systems26
Internet Connection Options27
Installing IQ Gateway Commercial 2 in an Outdoor Enclosure27
Power Line Filters27
400 A Filter (SKU: QD-LCF-400-3P)28
Installation Instructions28
Surge Suppression in Commercial Systems28
IQ8 Commercial System Layout Design29
PV Array Layout Design29
Information Required for Array Design29
Design Considerations for PV Array Layout29
AC Cabling Layout29
PV Load Center Configuration and Location30
Key Components of PV Load Center30
Location of PV Load Center31
Consumption Cts31
IQ8 Commercial Microinverter Installation32
Parts and Tools Required32
IQ8 Commercial Microinverter Installation33
IQ8 Commercial System Startup and Commissioning42
Startup and Commissioning Using the Enphase Installer App42
System Activation Using the Enphase Installer Portal43
Array Builder Using Enphase Installer Portal44
IQ8 Commercial System Commissioning Process44
IQ8 Commercial System Monitoring and Maintenance51
System Details51
Kiosk View51
Energy and Power Data51
Array Details54
Troubleshooting Using Enphase Installer Portal and Enphase Installer App57
Identifying Crosstalking Microinverters in the Array57
Powerline Communication Analysis FFT Scan58
Initiate RMA in Enphase Installer Portal59
Troubleshooting of IQ8 Commercial Microinverter60
LED Operation60
DC Resistance Low-Power off Condition60
Method 1: Clear the Error Using the Enphase Installer Portal61
Method 2: Use the Enphase Installer App to Clear the Condition61
Troubleshoot an Inoperable Microinverter61
Disconnect a Microinverter62
Install a Replacement Microinverter63
Appendix A: Ampacity Calculations for IQ8 Commercial Microinverter System64
Branch Circuit Current Calculations64
Appendix B: Phase Balancing in IQ8 Commercial Installations Using the Three-Phase QD Cable Phase Rotation66
AC QD Cable for IQ8 Commercial Microinverter66
Phase Rotation for QD Cable66
Cable Configurations for QD Cabling Skus67
Phase Balancing for IQ8 Commercial Microinverter System67
Appendix C: Specifications68
IQ8 Commercial Microinverters68
QD Cables70
IQ Gateway Commercial 271
Appendix D: Photovoltaic Hazard Control System72
Photovoltaic Hazard Control System (PVHCS), System Equipment72
Revision History75

Brand	enphase
Model	IQ8P-3P-72-E-US
Category	Inverter
Language	English

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