Table of Contents
Important Safety Information .......................................................................................................................................... 4
Read this First ................................................................................................................................................. 4
Product Labels ................................................................................................................................................. 4
Safety and Advisory Symbols .......................................................................................................................... 4
Safety Instructions ........................................................................................................................................... 4
General Safety .............................................................................................................................................................. 4
Microinverter Safety ...................................................................................................................................................... 5
Engage Cable and Accessory Safety ............................................................................................................................ 6
The Enphase Microinverter System ............................................................................................................................... 7
How the Microinverter Works ........................................................................................................................... 8
System Monitoring......................................................................................................................................................... 8
Optimal Reliability ......................................................................................................................................................... 8
Ease of Design .............................................................................................................................................................. 8
Planning for Microinverter Installation ............................................................................................................................ 9
Compatibility and Capacity .............................................................................................................................. 9
Compatibility ................................................................................................................................................................. 9
Branch Circuit Capacity ................................................................................................................................................. 9
Utility Service Requirements.......................................................................................................................................... 9
Lightning and Surge Suppression .................................................................................................................. 10
Parts and Tools Required .............................................................................................................................. 10
Enphase Equipment .................................................................................................................................................... 10
Other Items ................................................................................................................................................................. 10
Example Single-Phase Design ...................................................................................................................... 11
Enphase Items Needed for Example Design ............................................................................................................... 12
Non-Enphase Items Needed for Example Design ........................................................................................................ 12
Enphase Microinverter Installation ............................................................................................................................... 13
Step 1: Register the System .......................................................................................................................... 14
Step 2: Connect the Envoy Communications Gateway ................................................................................. 15
Step 3: Position the Enphase Engage™ Cable ............................................................................................. 16
Step 4: Install an AC Junction Box................................................................................................................. 17
Step 5: Attach the Microinverters to the Mounting Rail .................................................................................. 18
Step 6: Dress the Engage Cable ................................................................................................................... 19
Step 7: Connect the Microinverters................................................................................................................ 20
Step 8: Terminate the Unused End of the Engage Cable .............................................................................. 21
Step 9: Connect the Engage Cable to AC Junction Box ................................................................................ 22
Step 10: Complete the Installation Map ......................................................................................................... 23
Step 11: Connect the PV Modules ................................................................................................................. 23
Commissioning and Operation ..................................................................................................................................... 24
Energise the System ...................................................................................................................................... 24
Check the Envoy's progress .......................................................................................................................... 24
Configure the Grid Profile .............................................................................................................................. 25
Build the Virtual Array .................................................................................................................................... 25
Troubleshooting ........................................................................................................................................................... 26
Status LED Indications and Error Reporting .................................................................................................. 26
Start-up LED Operation ............................................................................................................................................... 26
Post-Start-up LED Indications ..................................................................................................................................... 26
Reported Faults ........................................................................................................................................................... 26
Troubleshoot an Inoperable Microinverter ..................................................................................................... 27
Disconnect a Microinverter ............................................................................................................................ 28
Install a Replacement Microinverter ............................................................................................................... 29
Engage Cable Planning and Ordering ......................................................................................................................... 30
Selecting Cable Type ..................................................................................................................................... 30
Connector Spacing Options ........................................................................................................................... 30
Voltage Type and Conductor Count Options ................................................................................................. 31
Cabling Length Options ................................................................................................................................. 31
Planning for Cable Lengths and Type ............................................................................................................ 31
Technical Data ............................................................................................................................................................. 33
Technical Considerations .............................................................................................................................. 33
Features and Specifications .......................................................................................................................... 33
M250 and M215 Features and Compliance ................................................................................................................. 33
M250-72 Specifications ............................................................................................................................................... 34
M250-60 Specifications ............................................................................................................................................... 35
M215-60-230-S25E and -S22E Specifications ............................................................................................................. 36
M215-60-230-S22 Specifications ................................................................................................................................. 37
Engage Cable Specifications ....................................................................................................................................... 38
Enphase Installation Map .............................................................................................................................. 39
Sample Schematic – 230 Vac, Single-Phase ................................................................................................ 40
Sample Schematic – 230 Vac, Three-Phase ................................................................................................. 41
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