enphase M215 User manual

INSTALLATION AND OPERATION MANUAL
141-00012, Rev 05
Enphase Microinverter
Model M215

M215 Installation and Operation
2013 Enphase Energy Inc. 141-00012 Rev 05
2
Contact Information
Enphase Energy Inc.
1420 N. McDowell Blvd.
Petaluma, CA 94954
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) for the latest information.
For warranty text refer to http://www.enphase.com/warranty.
For Enphase patent information refer to http://enphase.com/company/patents/.
© 2013 Enphase Energy Inc. All rights reserved.

M215 Installation and Operation
2013 Enphase Energy Inc. 141-00012 Rev 05
3
Table of Contents
Important Safety Information.........................................................................................................................4
Read this First..................................................................................................................................................4
Safety Instructions ...........................................................................................................................................4
The Enphase Microinverter System..............................................................................................................5
How the Microinverter Works...........................................................................................................................6
System Monitoring.......................................................................................................................................6
Optimal Reliability........................................................................................................................................6
Ease of Design............................................................................................................................................6
Planning for Microinverter Installation...........................................................................................................7
Compatibility and Capacity ..............................................................................................................................7
Electrical Compatibility ................................................................................................................................7
Branch Circuit Capacity...............................................................................................................................7
Parts and Tools Required................................................................................................................................8
Enphase Equipment....................................................................................................................................8
Other Items..................................................................................................................................................8
Lightning and Surge Suppression....................................................................................................................8
Enphase Microinverter Installation................................................................................................................9
Step 1: Measure AC Voltage at the Electrical Utility Connection...................................................................10
Step 2: Install the AC Branch Circuit Junction Box........................................................................................11
Step 3: Position the Enphase Engage Cable.................................................................................................12
Step 4: Attach the Microinverters to the PV Racking .....................................................................................13
Step 5: Ground the System............................................................................................................................14
Step 6: Dress the Engage Cable ...................................................................................................................15
Step 7: Connect the Microinverters................................................................................................................16
Step 8: Terminate the Unused End of the Engage Cable..............................................................................17
Step 9: Connect the Engage Cable to AC Junction Box(es)..........................................................................18
Step 10: Complete the Installation Map.........................................................................................................19
Step 11: Connect the PV Modules.................................................................................................................19
Commissioning and Operation....................................................................................................................20
Energize the System......................................................................................................................................20
Build the Virtual Array....................................................................................................................................20
M215 Operation.............................................................................................................................................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
Troubleshoot an Inoperable Microinverter .....................................................................................................22
Disconnect a Microinverter from the PV Module............................................................................................24
Install a Replacement Microinverter...............................................................................................................25
Technical Data ............................................................................................................................................26
Technical Considerations...............................................................................................................................26
M215 Specifications.......................................................................................................................................26
Engage Cable Specifications.........................................................................................................................28
Engage Cable Planning and Ordering Information ........................................................................................29
Selecting Cable Type ................................................................................................................................29
Connector Spacing Options.......................................................................................................................29
Voltage Types and Conductor Count.........................................................................................................30
Racking Compatibility................................................................................................................................30
Cabling Length Options.............................................................................................................................30
Planning for Cable Lengths and Type .......................................................................................................30
Enphase Installation Map...............................................................................................................................32
M215 Dimensions..........................................................................................................................................33
Sample Wiring Diagram: M215, 240 VAC......................................................................................................34
Sample Wiring Diagram: M215, 208 VAC......................................................................................................35

M215 Installation and Operation
2013 Enphase Energy Inc. 141-00012 Rev 05
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.
DANGER! This indicates a hazardous situation, which if not avoided, will result in death
or serious injury.
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
Do not use Enphase equipment in a manner not specified by the manufacturer. Doing so may
cause death or injury to persons, or damage to equipment.
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 the Enphase® Microinverters
and the Engage Cable and accessories.
Do not attempt to repair the Enphase Microinverter; it contains no user-serviceable parts. If it
fails, 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.
If the AC cable on the microinverter is damaged or broken, do not install the unit.
Before installing or using the Enphase Microinverter, 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 you have completed all
installation procedures and 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 that you may
need to set, depending upon local requirements. Only an authorized installer with the
permission and following requirements of the local electrical utility should make adjustments.

M215 Installation and Operation
2013 Enphase Energy Inc. 141-00012 Rev 05
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
2013 Enphase Energy Inc. 141-00012 Rev 05
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
Once you install the Envoy Communications Gateway and provide an Ethernet connection to your
broadband router or modem, 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, the entry of water during occasional temporary
submersion at a limited depth, and damage from external ice formation.
NOTE: To ensure optimal reliability and to meet warranty requirements, the Enphase
Microinverter must be installed according to the instructions in this manual.
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
dangerously high DC voltage.

M215 Installation and Operation
2013 Enphase Energy Inc. 141-00012 Rev 05
7
Planning for Microinverter Installation
The M215 is compatible with most 60-cell PV modules (to 270W or higher) and installs quickly and easily.
It works with either three-phase 208 VAC or single-phase 240 VAC services. The M215 ships with
integrated DC and AC cables and connectors. The DC connectors attach to the PV module, while the AC
connector attaches directly to the Engage Cable. No additional cabling is needed.
The Engage Cable is available in two connector spacing options and two voltage types to meet varying
site requirements. For Engage Cable ordering information, see “Engage Cable Planning and Ordering
Information” on page 29.
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”on page 26 of this manual. Refer to the Enphase website
(http://www.enphase.com/support) 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.
WARNING: The M215 may be paired only with a 60-cell PV module.
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 can 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
Branch Circuit Capacity
Plan your AC branch circuits to meet the following limits for maximum number of M215s per branch when
protected with a 20-amp over-current protection device (OCPD).
Maximum number of M215s when protected with a 20 A OCPD
Service type
Max M215s per AC branch circuit
Split phase 240 VAC
17
Three phase 208 VAC
25
Utility service requirements: The M215-60-2LL works with split phase 240 VAC service
or with three phase 208 VAC service.

M215 Installation and Operation
2013 Enphase Energy Inc. 141-00012 Rev 05
8
Parts and Tools Required
In addition to the microinverters, PV modules, and racking, you will need the following.
Enphase Equipment
Enphase Envoy Communications Gateway (optional, but recommended)
BEST PRACTICE: Connect the Envoy before the solar installation is complete.
When powered up and connected for the first time, the Envoy may retrieve an automatic
upgrade from Enphase. Because this upgrade may take up to 20 minutes, connect the
Envoy first (connect to both AC power and to the broadband router) so that it performs
the upgrade well before the solar module installation is complete. For more information,
see the Envoy Communications Gateway Installation and Operation Manual.
Engage Cable, as needed. (See “Engage Cable Planning and Ordering Information” on page 29.)
NOTE: Order the correct Engage Cable type. Installers must order Engage Cable for
either 240 VAC single phase, typical for residential applications, or 208 VAC three phase,
typical for commercial installations. All drop connectors on the Engage Cable bear labels
indicating the cable voltage designation.
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
Outdoor-rated, weather-proof AC junction box(es)
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 LEDs on the undersides of the microinverters)
Lightning and Surge Suppression
Enphase 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. For this reason, Enphase recommends that you protect your system with
lightning and/or surge suppression devices. In addition to having some level of surge suppression, it is
important to have insurance that protects against lightning and electrical surges.
Install these devices per vendor instructions.
Residential
Commercial
Citel DS72-RS-120 surge protector; data sheet
Delta LA-302 lightning arrestor; website
Leviton 51110 or 51110-001; whole house
surge protection panel; website
Midnight solar surge protection device MNSPD-
300 or MNSPD-300FM (with flush mount box);
website
Citel DS73-RS-G surge protector; data sheet
Delta LA-303 lightning arrestor; website

M215 Installation and Operation
2013 Enphase Energy Inc. 141-00012 Rev 05
9
Enphase Microinverter Installation
Installing the Enphase Microinverter System involves several key steps. Each step listed here is detailed
in the following pages. Follow the instructions in this section to install Enphase M215 Microinverters.
Step 1: Measure AC Voltage 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: Ground the System
Step 6: Dress the Enphase Engage Cable
Step 7: Connect the Microinverters
Step 8: Terminate the Unused End of the Engage Cable
Step 9: Connect the Engage Cable to AC Junction Box(es)
Step 10: Complete the Installation Map
Step 11: Connect the PV Modules
DANGER: DO NOT connect or disconnect the PV module and Enphase Microinverter
without first removing AC power from the PV system.

M215 Installation and Operation
2013 Enphase Energy Inc. 141-00012 Rev 05
10
Step 1: Measure AC Voltage 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 labels 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.

M215 Installation and Operation
2013 Enphase Energy Inc. 141-00012 Rev 05
11
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 20 amp maximum breaker.
a. Size the AC wire gauge to account for voltage rise. 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 rise 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 rise 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 rise 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.
Best Practice: Center-feed the branch circuit to minimize voltage rise in a fully populated
branch. This practice greatly reduces the voltage rise as compared with an end-fed
branch. To center-feed a branch, divide the circuit into two sub-branch circuits protected
by a single overcurrent protection device (OCPD).
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
2013 Enphase Energy Inc. 141-00012 Rev 05
12
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 240 VAC single phase, typical for residential applications or 208 VAC
three phase, typical for commercial installations. All drop connectors on the Engage
Cable bear labels indicating the cable type.
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 20 amp maximum breaker.
NOTE: ManyPV 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
2013 Enphase Energy Inc. 141-00012 Rev 05
13
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: You must install the M215 under the module, out of rain and sun. Do not
mount the microinverter in a position that allows long-term exposure to direct sunlight or
in a vertical orientation that allows water to collect in the DC connector recess.
f. 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 or vertically, with the
DC connectors facing up, is not
permitted.
g. Torque the microinverter fasteners to
the values shown. Do not over torque.
6 mm (1/4”) mounting hardware:
5 N m (45 to 50 in-lbs) minimum
8 mm (5/16”) mounting hardware:
9 N m (80 to 85 in-lbs) minimum
NOTE: Using a power screwdriver to tighten the mounting hardware is not recommended
due to the risk of thread galling.

M215 Installation and Operation
2013 Enphase Energy Inc. 141-00012 Rev 05
14
Step 5: Ground the System
Each M215 Microinverter comes with a grounding clip that can accommodate a 6-8 AWG conductor.
Check local requirements for allowable grounding conductor sizes.
Ground the microinverter chassis as follows:
NOTE: Ground the system in accordance with all applicable local electrical codes and the
National Electrical Code (NEC), ANSI/NFPA 70.
NOTE: CSA has evaluated and approved the Wiley Electronics “WEEB” grounding washers for
use with the Enphase Microinverter. Compatible grounding washer part numbers and
installation guidelines are included in the Racking Compatibility List.
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 (compression) connection.
c. Torque the 10/32 grounding cleat screw to 2 N m (20 to 25 in-lbs) minimum. Do not over
torque.
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
2013 Enphase Energy Inc. 141-00012 Rev 05
15
Step 6: Dress the Engage Cable
NOTE: Adhere to the following requirements:
Do not expose the connection to directed, pressurized liquid (water jets, etc.).
Do not expose the connection to continuous immersion.
Do not expose the AC connector to continuous tension (e.g., tension due to pulling or
bending the cable near the connection)
Use only the connectors and cables provided.
Do not allow contamination or debris in the connectors.
Use the cable and connectors only when all parts are present and intact.
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.
NOTE: When looping the Engage Cable, do not
exceed the minimum bend radius of 4.75 inches (12
cm).
WARNING: Tripping Hazard. Loose cables can become a tripping hazard. Dress the
Engage Cable to minimize this potential.
release holes

M215 Installation and Operation
2013 Enphase Energy Inc. 141-00012 Rev 05
16
Step 7: Connect the Microinverters
a. Remove and discard the temporary shipping caps 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 temporary 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.
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. Sealing caps may not be reused.
NOTE: If you need to remove a sealing cap, you must use the Enphase disconnect tool
or a #3 Phillips screwdriver. See “Disconnect a Microinverter from the PV Module” on
page 24. Sealing caps may not be reused.

M215 Installation and Operation
2013 Enphase Energy Inc. 141-00012 Rev 05
17
Step 8: Terminate the Unused End of the Engage Cable
WARNING: Risk of Electrical Shock. The terminator cap must not be installed while
power is connected.
NOTE: Adhere to the following requirements:
Use the terminator only once. If you open the terminator following installation, the
latching mechanism is destroyed. Do not reuse the terminator.
If the latching mechanism is defective, do not use the terminator.
Do not circumvent or manipulate the latching mechanism.
Use the terminator and no other method to seal the conductor end of the trunk.
Do not expose the terminator cap to directed, pressurized liquid (water jets, etc.).
Do not expose the terminator to continuous immersion.
Do not expose the terminator to continuous tension (e.g., tension due to pulling or
bending the cable near the terminator)
Do not install or use in potentially explosive environments.
Do not allow the terminator to come into contact with open flame.
Use the terminator cap assembly only when all parts are present and intact.
Fit the terminator cap using only the prescribed tools.
Make sure that all seals are seated correctly in the wire organizer.
When stripping off the cable sheath, make sure that the conductors are not
damaged. If the conductors are damaged, proper system function cannot be assured.
a. Remove 60 mm (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 22 mm (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
2013 Enphase Energy Inc. 141-00012 Rev 05
18
Step 9: 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 33 for more information.
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 (EGC). A continuous GEC for system
ground is also required as described in “Step 5: Ground the System”.
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 continuous ground is required in addition to this green
grounding wire.
Balanced 208 VAC (three-phase) is accomplished by alternating phases between
microinverters as shown:

M215 Installation and Operation
2013 Enphase Energy Inc. 141-00012 Rev 05
19
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. You will create the virtual array in Enlighten from this map. Use the
blank map on page 32 to record microinverter placement for the system, or provide your own layout if a
larger or more intricate installation map is required.
You can build the system map manually, by peeling the serial number labels from the microinverters and
placing the labels on the installation map, or you can use the ArrayGun feature from the Enphase Installer
Toolkit to easily build and configure a system. Refer to http://enphase.com/products/arraygun/ for more
information.
To manually build 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 32). Remember to
keep a copy of the installation map for your records.
b. Draw a top-down view of the array using the Array Map template. Make sure to leave enough
room to place the serial number stickers.
c. 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.
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.
WARNING: The M215 can be paired only with a 60-
cell PV module.

M215 Installation and Operation
2013 Enphase Energy Inc. 141-00012 Rev 05
20
Commissioning and Operation
WARNING:Qualified personnel only may connect the Enphase Microinverter to the utility
grid after receiving prior approval from the electrical utility company.
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.
Energize the 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 starts producing power after a
five-minute wait time.
3. The Enphase Microinverters begins communicating over the power lines to the Envoy. The
time required for all microinverters to report to the Envoy varies 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.
Build the Virtual Array
When the system is energized and the Envoy detects at least one microinverter, create the virtual array in
Enlighten from the installation map you created.
You can scan and upload the paper copy of the Installation Map, or you can use the ArrayGun feature
from the Enphase Installer Toolkit to easily build and configure a system. Refer to
http://enphase.com/products/arraygun/ for more information.
To scan and upload the map and build the array:
1. Scan the installation map and upload it to the Activation form online.
2. Use Array Builder to create the virtual array in Enlighten. Use the installation map created in
Installation step 10 as your reference.
NOTE: Go to http://enphase.com/support/videos/ to view the Array Builder demo.
3. If you do not already have an account, go to http://www.enphase.com and click “Enlighten
Login” to register.
Once the virtual array is built, Enlighten displays a graphic representation of the PV system. It also shows
detailed current and historical performance information. Go to http://www.enphase.com for more
information on the Enphase Enlighten web-based monitoring and analysis.
M215 Operation
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.