enphase IQ 7 Series - Table of Contents

IQ 7 / IQ 7+ / IQ 7X / IQ 7A with EN4 Bulkhead Installation and Operation
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Table of Contents
Important Safety Information .......................................................................................................................................... 5
Read this First .................................................................................................................................................. 5
EN4 Bulkhead Microinverters ........................................................................................................................... 5
Product Labels ................................................................................................................................................. 5
Safety and Advisory Symbols........................................................................................................................... 5
IQ 7 Series Microinverter Safety Instructions ................................................................................................... 6
PV Rapid Shutdown Equipment (PVRSE) ....................................................................................................... 8
The Enphase IQ System................................................................................................................................................. 9
How the Enphase IQ Series Micros Work ...................................................................................................... 10
System Monitoring ..................................................................................................................................... 10
Optimal Reliability ...................................................................................................................................... 10
Ease of Design ........................................................................................................................................... 10
Planning for Microinverter Installation........................................................................................................................... 11
Compatibility ................................................................................................................................................... 11
About EN4 Bulkhead Microinverters .............................................................................................................. 12
Grounding Considerations.............................................................................................................................. 12
Branch Circuit Capacity .................................................................................................................................. 13
Utility Service Requirements .......................................................................................................................... 13
Wire Lengths and Voltage Rise ...................................................................................................................... 13
Lightning and Surge Suppression .................................................................................................................. 14
Parts and Tools Required ............................................................................................................................................. 14
Enphase Equipment ....................................................................................................................................... 14
Other Items..................................................................................................................................................... 14
Enphase Microinverter Installation................................................................................................................................ 15
Step 1: Position the Enphase Q Cable ........................................................................................................... 16
Step 2: Position the Enphase Q Aggregator or Junction Box ........................................................................ 16
Step 3: Mount the Microinverters ................................................................................................................... 17
Step 4: Create an Installation Map ................................................................................................................. 18
Step 5: Manage the Cabling ........................................................................................................................... 19
Step 6: Connect the Microinverters ................................................................................................................ 19
Step 7: Terminate the Unused End of the Cable............................................................................................ 20
Step 8: Complete Installation of the Enphase Q Aggregator or Junction Box ................................................ 21
Step 9: Connect the PV Modules ................................................................................................................... 21
Step 10: Energize the System ........................................................................................................................ 22
Set Up and Activate Monitoring ...................................................................................................................... 22
Troubleshooting ............................................................................................................................................................ 23
Status LED Indications and Error Reporting .................................................................................................. 23
LED Operation ........................................................................................................................................... 23
DC Resistance Low – Power Off Condition ............................................................................................... 23
Other Faults ............................................................................................................................................... 24
Troubleshoot an Inoperable Microinverter...................................................................................................... 25
Disconnect a Microinverter ............................................................................................................................. 26
Install a Replacement Microinverter ............................................................................................................... 27