IQ8MC/IQ8AC/IQ8HC Installation and Operation Manual
3 © 2023 Enphase Energy Inc. All rights reserved. September 2023
IOM-00029-1.0
Contents
Important safety information ............................................................................................................................... 4
Read this first ...................................................................................................................................................... 4
Product labels ..................................................................................................................................................... 4
Safety and advisory symbols ............................................................................................................................ 4
IQ8 Series Microinverters safety instruction ................................................................................................. 5
1. The Enphase Energy System ....................................................................................................................... 8
2. Planning for microinverter installation ..................................................................................................... 10
3. Parts and tools required ............................................................................................................................. 12
4. Enphase microinverters installation ......................................................................................................... 13
Step 1: Position the IQ Cable ........................................................................................................................... 14
Step 2: Position the junction box ................................................................................................................... 14
Step 3: Mount the microinverters .................................................................................................................. 14
Step 4: Create an installation map ................................................................................................................. 15
Step 5: Manage the cabling ............................................................................................................................ 16
Step 6: Connect the microinverters .............................................................................................................. 16
Step 7: Terminate the unused end of the IQ Cable ...................................................................................... 17
Step 8: Complete the installation of the junction box ................................................................................ 18
Step 9: Connect the PV modules ................................................................................................................... 18
Step 10: Energize the system .......................................................................................................................... 19
4.1 Set up and activate monitoring ........................................................................................................ 19
5. Troubleshooting .......................................................................................................................................... 20
5.1 Status LED indications and error reporting ................................................................................... 20
5.2 Troubleshoot an inoperable microinverter ..................................................................................... 21
5.3 Disconnect a microinverter ............................................................................................................. 22
5.4 Install a replacement microinverter ................................................................................................ 22
5.5 Enphase IQ Cable planning and ordering ...................................................................................... 23
5.6 Enphase IQ Cable accessories .........................................................................................................24
6. Technical data ............................................................................................................................................. 25
6.1 Technical considerations .................................................................................................................. 25
6.2 Bifacial modules ................................................................................................................................. 25
6.3 PQ capability curve ........................................................................................................................... 25
7. Specifications.............................................................................................................................................. 26
7.1 IQ8MC-72-M-INT Microinverter specifications ............................................................................ 26
7.2 IQ8AC-72-M-INT Microinverter specifications .............................................................................. 28
7.3 IQ8HC-72-M-INT Microinverter specifications ............................................................................. 30
7.4 Enphase installation map .................................................................................................................. 32
7.5 Sample wiring diagram ..................................................................................................................... 33
Revision history .................................................................................................................................................... 35
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