enphase M215 User manual

INSTALLATION AND OPERATION MANUAL
141-00012, Rev 04
Enphase Microinverter
Model M215™

M215 Installation and Operation
Copyright 2012 Enphase Energy 141-00012 Rev 04
2
Contact Information
Enphase Energy Inc.
201 1St Street
Petaluma, CA 94952
http://www.enphase.com
[e-mail]
[e-mail]
FCC Compliance
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to
part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, may cause harmful interference to
radio communications. However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, you are encouraged to try to correct the interference by one
or more of the following measures:
•Reorient or relocate the receiving antenna.
•Increase the separation between the equipment and the receiver.
•Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
•Consult the dealer or an experienced radio/TV technician for help.
Changes or modifications not expressly approved by the party responsible for compliance may void the
user’s authority to operate the equipment.
Other Information
Product information is subject to change without notice. All trademarks are recognized as the property of
their respective owners.
User documentation is updated frequently; Check the Enphase website
(http://www.enphase.com/support/downloads) for the latest information.
See the M215 25-year limited warranty.
Copyright © 2012 Enphase Energy. All rights reserved.

M215 Installation and Operation
Copyright 2012 Enphase Energy 141-00012 Rev 04
3
Table of Contents
Important Safety Information ................................................................................................................................ 4
The Enphase Microinverter System .....................................................................................................................5
How the Microinverter Works..................................................................................................................6
System Monitoring ..............................................................................................................................6
Optimal Reliability ...............................................................................................................................6
Ease of Design.................................................................................................................................... 6
Enphase Microinverter Installation ....................................................................................................................... 7
Compatibility and Capacity.....................................................................................................................7
Parts and Tools Required .......................................................................................................................7
Enphase equipment: ..........................................................................................................................8
Other items: ........................................................................................................................................8
Lightning Surge Suppression .................................................................................................................8
Installation Procedure ............................................................................................................................. 9
Step 1 – Measure AC at the Electrical Utility Connection ......................................................................9
Step 2 – Install the AC Branch Circuit Junction Box ............................................................................10
Step 3 – Position the Enphase Engage Cable .....................................................................................11
Step 4 – Attach the Microinverters to the PV Racking..........................................................................12
Step 5 – Dress the Engage Cable ........................................................................................................13
Step 7 – Terminate the Unused End of the Engage Cable..................................................................15
Step 8 – Connect the Engage Cable to AC Junction Box(es) .............................................................16
Step 9 – Ground the System.................................................................................................................17
Step 10 – Complete the Installation Map .............................................................................................18
Complete the Installation Map..........................................................................................................18
Alternative: Create Your Own Map ..................................................................................................18
Step 11 – Connect the PV Modules......................................................................................................18
Step 12 – Build the Virtual Array ...........................................................................................................19
Commissioning and Operation ..........................................................................................................................20
Commissioning .....................................................................................................................................20
Operating Instructions ..........................................................................................................................20
Troubleshooting..................................................................................................................................................21
Status LED Indications and Error Reporting.........................................................................................21
Startup LED Operation: ....................................................................................................................21
Post-Startup LED Indications: ..........................................................................................................21
GFDI Fault:........................................................................................................................................21
Other Faults: .....................................................................................................................................21
Troubleshooting an Inoperable Microinverter.......................................................................................22
Disconnecting a Microinverter from the PV Module .............................................................................23
Installing a Replacement Microinverter ................................................................................................24
Technical Data....................................................................................................................................................25
Technical Considerations .....................................................................................................................25
Technical Specifications .......................................................................................................................26
Enphase M215 Microinverter Parameters ........................................................................................26
Enphase Installation Map .....................................................................................................................28
Sample Wiring Diagram – M215, 240 VAC...........................................................................................29
Sample Wiring Diagram – M215, 208 VAC...........................................................................................30

M215 Installation and Operation
Copyright 2012 Enphase Energy 141-00012 Rev 04
4
Important Safety Information
Read this First
This manual contains important instructions for use during installation and maintenance of the Enphase
M215™ Microinverter.
To reduce the risk of electrical shock, and to ensure the safe installation and operation of the Enphase
Microinverter, the following safety symbols appear throughout this document to indicate dangerous
conditions and important safety instructions.
WARNING! This indicates a situation where failure to follow instructions may be a safety
hazard or cause equipment malfunction. Use extreme caution and follow instructions
carefully.
NOTE: This indicates information particularly important for optimal system operation. Follow
instructions closely.
Safety Instructions
Perform all electrical installations in accordance with all applicable local electrical codes and the
National Electrical Code (NEC), ANSI/NFPA 70.
Be aware that only qualified personnel should install or replace Enphase Microinverters.
Do not attempt to repair the Enphase Microinverter; it contains no user-serviceable parts. If it
fails, please contact Enphase customer service to obtain an RMA (return merchandise
authorization) number and start the replacement process. Tampering with or opening the
Enphase Microinverter will void the warranty.
Before installing or using the Enphase Microinverter, please read all instructions and cautionary
markings in the technical description and on the Enphase Microinverter System and the PV
equipment.
Connect the Enphase Microinverter to the utility grid only after receiving prior approval from the
electrical utility company.
Be aware that the body of the Enphase Microinverter is the heat sink. Under normal operating
conditions, the temperature is 15°C above ambient, but under extreme conditions the
microinverter can reach a temperature of 80°C (176°F). To reduce risk of burns, use caution
when working with microinverters.
Do NOT disconnect the PV module from the Enphase Microinverter without first removing AC
power.
Be aware that the M215 has field adjustable voltage and frequency trip points. Only an
authorized installer with the permission and following requirements of the local electrical utility
should make adjustments.

M215 Installation and Operation
Copyright 2012 Enphase Energy 141-00012 Rev 04
5
The Enphase Microinverter System
The Enphase Microinverter System is the world’s most technologically advanced inverter system for use in
utility-interactive applications. This manual details the safe installation and operation of the Enphase
Microinverter.
The three key elements of an Enphase Microinverter System include the:
•Enphase M215 Microinverter
•Enphase Envoy™ Communications Gateway
•Enphase Enlighten™ web-based monitoring and analysis software
This integrated system maximizes energy harvest, increases system reliability, and simplifies design,
installation and management.

M215 Installation and Operation
Copyright 2012 Enphase Energy 141-00012 Rev 04
6
How the Microinverter Works
The Enphase Microinverter maximizes energy production from your photovoltaic (PV) array. Each Enphase
Microinverter is individually connected to one PV module in your array. This unique configuration means that
an individual Maximum Peak Power Point Tracker (MPPT) controls each PV module. This ensures that the
maximum power available from each PV module is exported to the utility grid regardless of the performance
of the other PV modules in the array. That is, although individual PV modules in the array may be affected by
shading, soiling, orientation, or PV module mismatch, the Enphase Microinverter ensures top performance
for its associated PV module. The result is maximum energy production from your PV system.
System Monitoring
Indoors, you can install the Envoy Communications Gateway by plugging it into any convenient 120VAC wall
socket and providing an Ethernet connection to your broadband router or modem. After installation of the
Envoy, the Enphase Microinverters automatically begin reporting to the Enphase Enlighten web server. The
Enlighten software presents current and historical system performance trends, and it informs you of PV
system status.
Optimal Reliability
Microinverter systems are inherently more reliable than traditional inverters. The distributed nature of a
microinverter system ensures that there is no single point of system failure in the PV system. Enphase
Microinverters are designed to operate at full power at ambient temperatures as high as 65°C (150°F). The
microinverter housing is designed for outdoor installation and complies with the NEMA 6 environmental
enclosure rating standard:
NEMA 6 rating definition
: Indoor or outdoor use primarily to provide a degree of protection
against hose-directed water, and the entry of water during occasional temporary
submersion at a limited depth, and damage from external ice formation.
Ease of Design
PV systems using Enphase Microinverters are very simple to design and install. You will not need string
calculations, and you can install individual PV modules in any combination of PV module quantity, type, age
and orientation. You won’t need to install cumbersome traditional inverters. Each microinverter quickly
mounts on the PV racking, directly beneath each PV module. Low voltage DC wires connect from the PV
module directly to the co-located microinverter, eliminating the risk of personnel exposure to lethal 600Vdc
power.

M215 Installation and Operation
Copyright 2012 Enphase Energy 141-00012 Rev 04
7
Enphase Microinverter Installation
Follow the instructions in this section to install Enphase M215™ Microinverters.
WARNING: Be aware that only qualified personnel should connect the Enphase
Microinverter to the utility grid.
WARNING: Be aware that installation of this equipment includes risk of electric shock.
Normally grounded conductors may be ungrounded and energized when a ground fault is
indicated.
Compatibility and Capacity
The Enphase M215 Microinverters are electrically compatible with most 60-cell PV modules. For more
information, see Technical Data page 25 of this manual.
WARNING: The M215 should be paired only with a 60-cell PV module.
Refer to the Enphase website (http://www.enphase.com/support/downloads) for a list of electrically-
compatible PV modules and approved PV racking systems. To ensure mechanical compatibility, be sure to
order the correct connector type for both microinverter and PV module from your distributor.
Electrical Compatibility
Model Number Works with PV Module Type PV Module Connector Type
M215-60-2LL-S22
M215-60-2LL-S22-NA
60-cell PV module
Warning: The M215-60-2LL
should be paired only with a
60-cell PV module.
MC-4 Type 2 Locking or
Amphenol H4 Locking
M215-60-2LL-S23
M215-60-2LL-S23-NA
Tyco Solarlock Locking
M215-60-2LL-S24
M215-60-2LL-S24-NA
SMK
Voltage and Capacity
Maximum number of M215s per 20 amp AC Branch Circuit
Service type
Max M215s per AC branch circuit
Split phase 240V 17
Three phase 208V 25
Utility service reqirements: The M215-60-2LL works only with split phase 240V service,
three phase 208V service, or 208 single phase service.

M215 Installation and Operation
Copyright 2012 Enphase Energy 141-00012 Rev 04
8
Parts and Tools Required
In addition to the microinverters, PV modules, racking, and associated hardware, you will need the following.
Enphase Equipment
•Engage Cable, as needed
NOTE: Order the correct Engage Cable type. Installers must order Engage Cable for either
240VAC single phase, typical for residential applications, or 208VAC three phase, typical for
commercial installations. All drop connectors on the Engage Cable bear labels indicating
the cable voltage designation. Use 240 VAC cable at sites with 208 single-phase service.
•Cable clips
•Sealing caps, as needed (for any unused drops on the Engage Cable)
•Terminators, as needed (one needed at the end of each AC branch circuit)
•Enphase disconnect tool (number 2 and 3 Phillips screwdrivers can be substituted)
Other Items
•AC junction boxes
•Gland or strain relief fitting (one per AC junction box)
•Continuous grounding conductor, grounding washers
•Number 2 and 3 Phillips screwdrivers
•Torque wrench, sockets, wrenches for mounting hardware
•Adjustable wrench or open-ended wrench (for terminators)
•Handheld mirror (to view indicator lights on the undersides of the microinverters)
Lightning Surge Suppression
Lightning does not actually need to strike the equipment or building where the PV system is installed to
cause damage. Often, a strike nearby will induce voltage spikes in the electrical grid that can damage
equipment. Enphase Energy Microinverters have integral surge protection, greater than most traditional
inverters. However, if the surge has sufficient energy, the protection built into the Microinverter can be
exceeded, and the equipment can be damaged.
As the Enphase Limited Warranty does not cover “acts of God” such as lightning strikes, and since lightning
strikes can occur anywhere, it is best practice to install surge protection as part of any solar installation. We
recommend the following protection devices. These have been tested to ensure that they do not interfere with
power line communications. Install per vendor instructions.
Residential:
Vendor: Citel, Part Number DS72RS-120
Application: Residential 120/240V Split Phase where N-G bond exists.
Commercial:
Vendor: Citel, Part Number SP-120
Application: Branch panel protection
See the vendor datasheet for DS70R, (which includes the DS72RS-120) or for SP-120 at
http://www.citelprotection.com/english/citel_data_sheets/ac_protection/.

M215 Installation and Operation
Copyright 2012 Enphase Energy 141-00012 Rev 04
9
Installation Procedure
Installing the Enphase Microinverter System involves several key steps. Each step listed below is detailed in
the following pages.
Step 1 – Measure AC at the Electrical Utility Connection
Step 2 – Install the AC Branch Circuit Junction Box
Step 3 – Position the Enphase Engage Cable
Step 4 – Attach the Microinverters to the PV Racking
Step 5 – Dress the Enphase Engage Cable
Step 6 – Connect the Microinverters
Step 7 – Terminate the Unused End of the Engage Cable
Step 8 – Connect the Engage Cable to AC Junction Box(es)
Step 9 – Ground the System
Step 10 – Complete the Installation Map
Step 11 – Connect the PV Modules
Step 12 – Build the Virtual Array
WARNING: DO NOT connect Enphase Microinverters to the utility grid or energize the AC
circuit(s) until you have completed all of the installation procedures as described in the
following sections.
Step 1 – Measure AC at the Electrical Utility Connection
Measure AC line voltage at the electrical utility connection to confirm that it is within range. Acceptable
ranges are shown in the following table.
Single-phase 240 Volt AC
L1 to L2 211 to 264 VAC
L1, L2 to neutral 106 to 132 VAC
Three-phase 208 Volt AC
L1 to L2 to L3 183 to 229 VAC
L1, L2, L3 to neutral 106 to 132 VAC
NOTE: Check the labeling on the Engage Cable drop connectors to be sure that the cable
matches the electrical utility service at the site. Use 208 VAC (208 VAC three-phase) Engage
Cable at sites with three-phase 208 VAC service, or use 240 VAC Engage Cable at sites
with 240 VAC single-phase service. Use 240 VAC cable at sites with 208 single-phase
service.

M215 Installation and Operation
Copyright 2012 Enphase Energy 141-00012 Rev 04
10
Step 2 – Install the AC Branch Circuit Junction Box
DANGER: Risk of Electrical Shock. Be aware that installation of this equipment includes risk
of electric shock. Do not install the AC junction box without first removing AC power from
the Enphase System.
WARNING: Only use electrical system components approved for wet locations.
WARNING: Do NOT exceed the maximum number of microinverters in an AC branch circuit
as listed on page 27 of this manual. You must protect each microinverter AC branch circuit
with a 20A maximum breaker.
a. Size the AC wire gauge to account for voltage drop. Select the correct wire size based on the
distance from the beginning of the microinverter AC branch circuit to the breaker in the load
center.
All components of system wiring must be considered, including internal voltage drop within the
length of Engage Cable. Typically, three wire sections and several wire terminations must be
quantified. There is also some resistance associated with each circuit breaker. As all of these
resistances are in series, they add together. Since the same current is flowing through each
resistance, the total voltage drop is total current times the total resistance. For a single-phase
system, the total resistance is equal to two times the one-way resistance. For a three-phase
system, each of the three line currents and resistances must be calculated.
Standard guidelines for voltage drop on feeder and AC branch circuit conductors might not be
sufficient for microinverter AC branch circuits that contain the maximum allowable
microinverters. This is due to high inherent voltage rise on the AC branch circuit.
For more information, refer to our Technical Brief, Voltage Drop Considerations for M215.
b. Install an appropriate junction box at a suitable location on the PV racking system. You can
center feed the branch, or you can install
the junction box at the end of a row of PV
modules.
c. Provide an AC connection from the AC
junction box back to the electrical utility
connection using equipment and
practices as required by the NEC and
local jurisdictions.

M215 Installation and Operation
Copyright 2012 Enphase Energy 141-00012 Rev 04
11
Step 3 – Position the Enphase Engage Cable
The Engage Cable is a continuous length of 12 AWG (2.5 mm2), outdoor rated cable with integrated
connectors for microinverters. These connectors are preinstalled along the Engage Cable at intervals to
accommodate PV module widths. The microinverters plug directly into the connectors, and the Engage
Cable is terminated into the junction box that feeds electricity back to the system AC disconnect.
NOTE: Make sure you are using the correct cable type. Installers must order Engage Cable
for either 240VAC single phase, typical for residential applications or 208VAC three phase,
typical for commercial installations. All drop connectors on the Engage Cable bear labels
indicating the cable type. Installers can use 240 VAC cable at sites with 208 single-phase
service.
a. Lay the Engage Cable along the route it will travel, positioning the connectors so that they align
with the PV modules.
WARNING: Plan the AC branches so that they do not exceed the maximum number of
microinverters in an AC branch circuit as listed on page 27 of this manual. You must protect
each microinverter AC branch circuit with a 20A maximum breaker.
NOTE: Many PV modules have a central stiffening brace. In these cases, do not position the
connector and microinverter at the exact center of the PV module. Instead, position the drop
connectors so that the connectors do not conflict with the braces.
b. PV module widths vary by manufacturer. On the Engage Cable, connectors are spaced at
intervals to allow for the widest PV modules compatible with Enphase Microinverters. If narrower
PV modules are used, it may be necessary to account for excess cable by looping the cable at
suitable intervals.

M215 Installation and Operation
Copyright 2012 Enphase Energy 141-00012 Rev 04
12
Step 4 – Attach the Microinverters to the PV Racking
a. Mark the approximate centers of each PV module on the PV racking.
b. Evaluate the location of the microinverter with respect to the PV module DC junction box or any
other obstructions.
c. Ensure that the microinverter does not interfere with the PV module frame or stiffening braces.
d. Ensure that the connector from the microinverter can easily reach the connector on the Engage
Cable.
e. Allow a minimum of 1.9 cm (0.75 inches) between the roof and the bottom of the microinverter.
Also allow 1.3 cm (0.50 inches) between the back of the PV module and the top of the
microinverter.
WARNING: Do not mount the microinverter in a location that allows long-term exposure to
direct sunlight (i.e., the microinverter should be covered by the PV module).
f. With the silver side of the microinverter
facing up and the black side facing down,
mount one microinverter at each location
using suitable hardware. The indicator light
on the underside of the microinverter will be
facing the roof.
NOTE: Installing the microinverter
black side up is not recommended as
it may allow moisture to collect
between the cover and the body of the
microinverter. If installing the M215 at
an angle, check that this angle does
not allow for collection of water in the
recesses of the microinverter.

M215 Installation and Operation
Copyright 2012 Enphase Energy 141-00012 Rev 04
13
Step 5 – Dress the Engage Cable
a. Attach the Engage Cable to the PV racking using the cable clips, or you may use tie wraps. The
cable clips are designed so that the connector from the microinverter can also be dressed into
the clip underneath the Engage Cable.
NOTE: There are two release-holes in the drop connector on the cable. These are not for
mounting but are used to disconnect the connector. Keep these release holes clear and
accessible.
b. Dress any excess in loops so that the Engage Cable does not contact the roof.
There are several ways to support the cable. One method is to place tie wraps or clips on either
side of the connector. Use one or two additional clips, tie wraps, or other support scheme to
secure the cable between connectors.
release holes

M215 Installation and Operation
Copyright 2012 Enphase Energy 141-00012 Rev 04
14
Step 6 – Connect the Microinverters
a. Remove the temporary shipping cap from the Engage
Cable and connect the microinverter. There are two
latching mechanisms within the connectors. Listen for two
clicks as the connectors engage. Ensure that both latching
mechanisms have engaged.
b. Repeat for all microinverters in the AC branch circuit.
c. Cover any unused connector with a sealing cap. Listen for
two clicks as the connectors engage. Ensure that
both latching mechanisms have engaged.
NOTES:
•Do not use the shipping cap to cover
unused connectors. The shipping cap
does not provide an adequate
environmental seal. Enphase sealing
caps are required for the system to be
UL compliant and to protect against moisture ingress.
•Enphase sealing caps are IP67 rated. Within the term “IP67”, “IP” indicates an
Ingress Protection (IP) rating against dust and liquids. This specific rating of IP67
indicates that this connector protects against all dust particles and immersion in
liquid. Sealing caps may not be reused.
WARNING: Make sure protective sealing caps have been installed on all unused AC
connectors. Unused AC connectors are live when the system is energized by the utility
system.
NOTE: If you need to remove a sealing cap, you must use the Enphase disconnect tool or a
#3 Phillips screwdriver. Sealing caps may not be reused.

M215 Installation and Operation
Copyright 2012 Enphase Energy 141-00012 Rev 04
15
Step 7 – Terminate the Unused End of the Engage Cable
Terminate the far end of the Engage Cable as follows.
a. Remove 60mm (2.5 inches) of the cable sheath from the conductors.
b. Slide the hex nut onto the Engage
Cable.
c. Insert the Engage Cable all the way
into the wire organizer (up to the
stop).
d. Bend the individual wires back into
the recesses in the wire organizer so
that they angle
back toward the cable.
e. Cut the individual wires so that no excess extends
outside of the wire organizer. The portions that
angle back will need to extend enough to fit neatly
into the 0.5 cm (0.2 in) recesses in the wire
organizer and flush with the edge of the cap.
f. Screw the hex nut onto the cap. Never unscrew
the hex nut as this can twist and damage the
cable.
g. Hold the cap with an Enphase disconnect tool, or
insert a #2 Phillips screwdriver.
h. Use a 24mm (7/8 inch) wrench to tighten the hex nut until the latching mechanism is screwed all
the way to the base.
i. Use a tie wrap or cable clip to attach the cable to the PV racking, so that the Engage Cable and
terminator do not touch the roof.
j. Ensure that all cabling is located underneath the PV module.
hex nut
wire organizer cap

M215 Installation and Operation
Copyright 2012 Enphase Energy 141-00012 Rev 04
16
Step 8 – Connect the Engage Cable to AC Junction Box(es)
a. Connect Engage Cable into the AC branch circuit junction box using an appropriate gland or
strain relief fitting. The Engage Cable requires a strain relief connector with an opening of 1.3 cm
(0.5 inches) in diameter.
b. Connect the Engage Cable into additional
AC junction boxes as needed to transition to
conduit between smaller sub-arrays.
Refer to the wiring diagrams located on
page 29 for more information.
NOTE: The Engage Cable uses a
different wiring scheme than used with
other Enphase Microinverters. Be aware
of the difference in wire color code.
240 Volt AC Split Phase Wiring
208 Volt AC Three-Phase Wiring
Black – L1
Red – L2
White – Neutral
Green - Ground
Black – L1
Red – L2
Blue – L3
White – Neutral
Green - Ground
NOTE: The green wire acts as equipment ground. A continuous GEC for system ground is
also required as described in the next step.
Wires are identified as follows: L1 is sheathed in Black, L2 is sheathed in red, L3 is sheathed in
blue, Neutral is sheathed in white, and Ground is sheathed in green. The grounding wire is used
to ground the microinverters. A WEEB or continuous ground is required in addition to this green
grounding wire.
Balanced 208 VAC (3-phase) is accomplished by alternating phases between microinverters as
shown:

M215 Installation and Operation
Copyright 2012 Enphase Energy 141-00012 Rev 04
17
Step 9 – Ground the System
If you are not using WEEB grounding washers to ground the microinverter chassis, follow the steps below.
NOTE: Compatible grounding washer part numbers are included in the Racking Compatibility
List. Installation guidelines are included in the WEEB Installation Application Note.
Each Enphase Microinverter comes with a grounding clip that can accommodate a 6-8 AWG conductor.
NOTE: The AC output neutral is not bonded to ground inside the microinverter.
a. Route a continuous GEC through each of the microinverters to the NEC-approved AC
grounding electrode.
b. You can ground the PV racking and PV module to this conductor
using a crimp connection. An alternative method is to connect
the microinverter to the grounded racking using a
grounding washer approved for the racking.
c. Torque the microinverter fasteners to the values below.
•6 mm (1/4”) mounting hardware – 5 N m (45 in-lbs) minimum
•8 mm (5/16”) mounting hardware – 9 N m (80 in-lbs) minimum
NOTE: Using a power screwdriver to tighten the grounding clamp screw is not
recommended due to the risk of thread galling.

M215 Installation and Operation
Copyright 2012 Enphase Energy 141-00012 Rev 04
18
Step 10 – Complete the Installation Map
The Enphase Installation Map is a diagrammatic representation of the physical location of each microinverter
in your PV installation. The virtual array in Enlighten is created from the map you create. Use the blank map
on page 28 to record microinverter placement for the system, or provide your own layout if a larger or more
intricate installation map is required.
Complete the Installation Map
a. Each Enphase Microinverter has a removable serial number label located on the mounting
plate. Peel the removable serial number label from each Enphase Microinverter and affix it to the
respective location on the Enphase installation map (see map on page 28). Remember to keep
a copy of the installation map for your records.
Alternative: Create Your Own Map
a. Draw a top-down view of the array using the Array Map template (using either the grid on Side A
or the freeform area on Side B). Make sure to leave enough room to place the serial number
stickers.
b. When installing the microinverters, remove the serial number labels located next to the DC input
cables and place them in the correct order on your drawing of the system. Remember to keep a
copy of the installation map for your records.
Step 11 – Connect the PV Modules
NOTE: Completely install all microinverters and all
system AC connections prior to installing the PV
modules.
a. Mount the PV modules above the microinverters.
b. Mate the microinverters and PV modules as required.
Repeat for all remaining PV modules using one
microinverter for each PV module.
WARNING: The M215 should be paired only with a
60-cell PV module.

M215 Installation and Operation
Copyright 2012 Enphase Energy 141-00012 Rev 04
19
Step 12 – Build the Virtual Array
When the system is energized and the Envoy detects all the installed microinverters, you can create the
virtual array in Enlighten from the installation map you created. Once the virtual array is built, Enlighten
displays a graphic representation of the PV system. It also shows detailed current and historical performance
information. Please go to http://www.enphase.com for more information on the Enphase Enlighten web-
based monitoring and analysis.
a. Scan the installation map and upload it to the Activation form online.
b. Use Array Builder to create the virtual array in Enlighten. Use the installation map created in step
9 as your reference.
NOTE: Go to
http://enphase.com/support/videos/ to view the Array Builder demo.
c. If you do not already have an account, go to http://www.enphase.com and click “Enlighten
Login” to register.

M215 Installation and Operation
Copyright 2012 Enphase Energy 141-00012 Rev 04
20
Commissioning and Operation
WARNING:Be aware that only qualified personnel must connect the Enphase Microinverter
to the utility grid.
WARNING:Ensure that all AC and DC wiring is correct. Ensure that none of the AC and DC
wires are pinched or damaged. Ensure that all AC junction boxes are properly closed.
WARNING:Connect the Enphase Microinverter to the utility grid only after receiving prior
approval from the electrical utility company.
NOTE:The Status LED on the underside of each microinverter will blink green six times to
indicate normal start-up operation approximately one minute after DC power is applied.
Commissioning
To commission the Enphase Microinverter PV system:
1. Turn ON the AC disconnect or circuit breaker for each microinverter AC branch circuit.
2. Turn ON the main utility-grid AC circuit breaker. Your system will start producing power after a
five-minute wait time.
3. The Enphase Microinverters will begin communicating over the power lines to the Envoy. The
time required for all microinverters to report to the Envoy will vary with the number of
microinverters in the system. The first units should be detected within 15 minutes but the entire
system could take hours to detect.
4. The M215 has field adjustable voltage and frequency trip points. If adjustments are required by
your local utility, the installer can use the Envoy to Manage the Grid Profile after all
microinverters have been detected.
For more information on Envoy operation, refer to the Envoy Installation and Operation Manual.
Operating Instructions
The Enphase Microinverter is powered on when sufficient DC voltage from the PV module is applied. The
Status LED of each microinverter will blink green six times to indicate normal start-up operation
approximately one minute after DC power is applied. You may need to use a handheld mirror to view
indicator lights on the undersides of the microinverters.