enphase IQ 7 User manual

INSTALLATION AND OPERATION MANUAL
EN-US
© 2023 Enphase Energy Inc. All rights reserved. September 2023
IOM-00028-1.0
Enphase IQ7, IQ7+, IQ7X, and IQ7A
Microinverters

IQ7/IQ7+/IQ7X/IQ7A Microinverters Installation and Operation Manual
2© 2023 Enphase Energy Inc. All rights reserved. September 2023
IOM-00028-1.0
Contents
Important safety information.................................................................................................................... 5
Read this first .......................................................................................................................................... 5
Product labels......................................................................................................................................... 5
Safety and advisory symbols................................................................................................................ 5
PV Rapid Shutdown Equipment (PVRSE) ........................................................................................... 9
1The Enphase IQ System................................................................................................................... 10
1.1 How the Enphase IQ Series Microinverters work .....................................................................11
System monitoring........................................................................................................................................ 11
2Planning for microinverter installation..........................................................................................12
2.1 Compatibility ................................................................................................................................12
2.2 Grounding considerations .....................................................................................................12
2.3 Branch circuit capacity ..........................................................................................................13
2.4 Utility service requirements...................................................................................................13
2.5 Wire lengths and voltage rise ................................................................................................13
2.6 Lightning and surge suppression..........................................................................................14
2.7 Parts and tools required .........................................................................................................14
Enphase Equipment ..............................................................................................................................14
Other Items.............................................................................................................................................14
3Enphase microinverter Installation................................................................................................15
Step 1: Position the IQ Cable................................................................................................................16
Step 2: Position the junction box ........................................................................................................ 17
Step 3: Mount the microinverters .......................................................................................................18
Step 4: Create an installation map......................................................................................................19
Step 5: Manage the cabling ................................................................................................................20
Step 6: Connect the microinverters ..................................................................................................20
Step 7: Terminate the unused end of the cable.................................................................................21
Step 8: Complete the installation of the junction box .................................................................... 22
Step 9: Connect the PV modules ....................................................................................................... 22
Step 10: Energize the system ..............................................................................................................23
3.1 Set up and activate monitoring.................................................................................................23
4Troubleshooting............................................................................................................................... 24
4.1 Status LED indications and error reporting ............................................................................ 24
4.1.1 LED operation ............................................................................................................................... 24
4.1.2 DC Resistance Low – Power Off Condition............................................................................. 24
4.1.3 Other faults ................................................................................................................................... 25

IQ7/IQ7+/IQ7X/IQ7A Microinverters Installation and Operation Manual
3© 2023 Enphase Energy Inc. All rights reserved. September 2023
IOM-00028-1.0
4.2 Troubleshoot an inoperable microinverter......................................................................... 26
4.3 Disconnect a microinverter .................................................................................................. 27
4.4 Install a replacement microinverter..................................................................................... 28
4.5 Ordering replacement parts .................................................................................................29
4.6 IQ Cable planning and ordering ...........................................................................................29
4.7 Connector spacing options ..................................................................................................29
4.8 Cabling options.......................................................................................................................30
4.9 IQ Cable accessories .............................................................................................................30
5Technical data ...................................................................................................................................31
5.1 Technical considerations ............................................................................................................31
5.1.1 Module requirements.................................................................................................................... 31
5.1.2 Bifacial modules ............................................................................................................................ 31
5.2 Specifications .........................................................................................................................32
5.2.1 IQ7-60-2-US Microinverter specifications.............................................................................. 32
5.2.2 IQ7PLUS-72-2-US Microinverter specifications..................................................................... 35
5.2.3 IQ7X-96-2-US Microinverter specifications............................................................................ 37
5.2.4 IQ7A-72-2-US Microinverter specifications ............................................................................ 39
5.2.5 IQ Cable specifications............................................................................................................... 42
5.2.6 Enphase connector ratings ........................................................................................................ 42
5.3 Enphase installation map.......................................................................................................43
Sample wiring diagram ........................................................................................................................44
Revision history.........................................................................................................................................45

IQ7/IQ7+/IQ7X/IQ7A Microinverters Installation and Operation Manual
4© 2023 Enphase Energy Inc. All rights reserved. September 2023
IOM-00028-1.0
Corporate headquarters contact information
Enphase Energy Inc.
47281 Bayside Pkwy, Fremont, Ca 94538, United States, Ph: [phone]
https://enphase.com/contact/support
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 to 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 (enphase.com/support) for
the latest information.
To ensure optimal reliability and to meet warranty requirements, the Enphase microinverter must be
installed according to the instructions in this manual. For warranty text, refer to
enphase.com/warranty.
For Enphase patent information, refer to enphase.com/company/patents/.
© 2023 Enphase Energy. All rights reserved. Enphase, the e and CC logos, IQ, and certain other
marks listed at https://enphase.com/trademark-usage-guidelines are trademarks of Enphase
Energy, Inc. in the US and other countries. Data subject to change.
Audience
This manual is intended for use by professional installation and maintenance personnel.

IQ7/IQ7+/IQ7X/IQ7A Microinverters Installation and Operation Manual
5© 2023 Enphase Energy Inc. All rights reserved. September 2023
IOM-00028-1.0
Important safety information
Read this first
This manual contains important instructions for use during the installation and maintenance of the IQ7
Series Microinverters.
Product labels
The following symbols appear on the product label and are described here:
Safety and advisory symbols
To reduce the risk of electric shock, and to ensure the safe installation and operation of the IQ7 Series
Microinverters System, 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.
WARNING: This indicates a situation where failure to follow instructions may result in burn
injury.
NOTE: This indicates information that is very important for optimal system operation.
Follow instructions closely.
IMPORTANT: Enphase IQ7 Series Microinverters listed in this manual require the IQ Cable. An
IQ Gateway is required to monitor the performance and, where required, provide control of the
IQ7 Series Microinverters.
WARNING
: Hot surface
DANGER:
Refer to safety instructions
DANGER
: Risk of electric shock
Refer to manual
Double insulated

IQ7/IQ7+/IQ7X/IQ7A Microinverters Installation and Operation Manual
6© 2023 Enphase Energy Inc. All rights reserved. September 2023
IOM-00028-1.0
IQ7 Series Microinverters safety instructions
General safety
DANGER: Risk
of electric
shock. Risk of
fire.
Only use electrical system components approved for wet locations.
Only competent personnel should install, troubleshoot, or replace Enphase
microinverters or IQ Cable and accessories.
Ensure that all AC and DC wiring is correct and that none of the AC or DC cables are
pinched, shorted, or damaged. Ensure that all AC junction boxes are properly closed.
Do not exceed the maximum number of microinverters in an AC branch circuit as listed
in the manual. You must protect each microinverter AC branch circuit with a 20 A
maximum breaker or fuse as appropriate.
DANGER: Risk
of electric
shock.
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.
Be aware that installation of this equipment includes the risk of electric shock.
The DC conductors of this photovoltaic system are ungrounded and may be
energized.
Always de-energize the AC branch circuit before servicing. Never disconnect the DC
or AC connectors under load.
WARNING: Before installing or using the Enphase microinverter, read all instructions and
cautionary markings in the technical description, on the Enphase equipment, and on
the photovoltaic (PV) equipment.
Do not connect Enphase microinverters to the grid or energize the AC circuit(s) until
you have completed all the installation procedures and have received approval from
the electrical network operator.
When the PV array is exposed to light, DC voltage is supplied to the power conversion
equipment (PCE).
Risk of equipment damage. Enphase male and female connectors must only be mated
with the identical type and brand of male/female connector.
NOTE: To ensure optimal reliability and to meet warranty requirements, install the Enphase
equipment according to the instructions in this manual.
The AC and DC connectors on the cabling are rated as a disconnect only when used
with an Enphase microinverter.
Protection against lightning and resulting voltage surge must be in accordance with
local electrical codes and standards.
Perform all electrical installations in accordance with all applicable local electrical
codes and standards.
Microinverter safety
WARNING: Risk of
skin burn.
The chassis of the Enphase microinverter is the heat sink. Under normal operating
conditions, the temperature could be 20°C above ambient temperature, but under
extreme conditions, the microinverter can reach a temperature of 90°C. To reduce the
risk of burns, use caution when working with microinverters.
DANGER: Risk of
fire.
The DC conductors of the PV module must be labeled “PV Wire” or “PV Cable” when
paired with the Enphase microinverter.

IQ7/IQ7+/IQ7X/IQ7A Microinverters Installation and Operation Manual
7© 2023 Enphase Energy Inc. All rights reserved. September 2023
IOM-00028-1.0
DANGER: Risk of
electric shock.
Risk of fire.
Only competent personnel may connect the Enphase microinverter to the electricity
grid.
Do not attempt to repair the Enphase microinverter; it contains no user-serviceable
parts. If it fails, contact Enphase Support to obtain a return merchandise authorization
(RMA) number and start the replacement process. Tampering with or opening the
Enphase microinverter will void the warranty.
WARNING: Risk of
equipment
damage.
Install the microinverter under the PV module to avoid direct exposure to rain, UV, and
other harmful weather events. Always install the microinverter bracket side up. Do not
mount the microinverter upside down. Do not expose the AC or DC connectors (on the
IQ Cable, PV module, or microinverter) to rain or condensation before the
connectors are mated.
The maximum open circuit voltage of the PV module must not exceed the specified
maximum input DC voltage of the Enphase microinverter. Refer to the Enphase
Compatibility Calculator to verify PV module electrical compatibility with the
microinverter. Use IQ8 Series Microinverters only with compatible PV modules as per
the Enphase Compatibility Calculator. Using an electrically incompatible PV module
voids Enphase
warranty.
WARNING: Risk of
equipment
damage.
You must match the DC operating voltage range of the PV module with the allowable
input voltage range of the Enphase microinverter.
The Enphase microinverter is not protected from damage due to moisture trapped in
cabling systems. Never mate microinverters to cables that have been left disconnected
and exposed to wet conditions. This voids the Enphase warranty.
WARNING: Risk of
equipment
damage.
The Enphase microinverter functions only with a standard, compatible PV module with
appropriate fill-factor, voltage, and current ratings. Unsupported devices include smart
PV modules, fuel cells, wind or water turbines, DC generators, non-Enphase batteries,
etc. These devices do not behave like standard PV modules, so operation and
compliance are not guaranteed. These devices may also damage the Enphase
microinverter by exceeding its electrical rating, making the system potentially unsafe.
NOTE: The Enphase microinverter has field-adjustable voltage and frequency trip points that
may need to be set, depending upon local requirements. Only a competent authorized
installer with the permission and following requirements of the local electrical
authorities should make adjustments.
NOTE: Installers must check the manufacturing date of the products to ensure that the
installation date is within one year of the manufactured date of the products. Contact
your local distributor to validate the date code.
IQ Cable safety
DANGER: Risk of
electric shock
.
Do not install the IQ Terminator while the power is connected.
WARNING: Risk of
electric shock. Risk
of fire.
When stripping the sheath from the IQ Cable,
ensure the conductors are not
damaged. If the exposed wires
are damaged, the system may not function
properly.
Do
not leave AC connectors on the IQ Cable uncovered for an extended period.
You must cover any unused connector with a sealing cap.

IQ7/IQ7+/IQ7X/IQ7A Microinverters Installation and Operation Manual
8© 2023 Enphase Energy Inc. All rights reserved. September 2023
IOM-00028-1.0
Ensure
protective sealing caps have been installed on all the unused AC
connectors.
Unused AC connectors are live when the system is energized.
WARNING:
Use the
terminator only once. If you open the terminator following installation, the
latching
mechanism is destroyed. If the latching mechanism is defective, do not
use
the
terminator. Do not circumvent or manipulate the latching mechanism.
Secure any loose cable when installing the IQ Cable to minimize tripping hazards.
NOTE:
When
looping the IQ Cable, do not form loops smaller than 4.75″(12 cm) in
diameter.
Provide support for the IQ Cable every 1.8 m (6 feet).
If you need to remove a sealing cap, you must use the IQ Disconnect Tool.
When
installing the IQ Cable and accessories, adhere to the following:
•Do not expose the terminator cap or cable connections to directed,
pressurized liquid (water jets, and so on).
•Do not expose the terminator or cable to continuous immersion.
•Do not expose the terminator cap or cable connections to continuous
tension (for example, tension due to pulling or bending the cable near the
connection).
•Use only the connectors provided.
•Do not allow contamination or debris in the connectors.
•Use the terminator cap and cable connections only when all parts are
present and intact.
•Do not install or use in potentially explosive environments.
•Do not allow the terminator to come into contact with an open flame.
•Fit the terminator cap using only the prescribed tools and in the
prescribed manner.
•Use the terminator to seal the conductor end of the IQ Cable; no other
method is allowed.

IQ7/IQ7+/IQ7X/IQ7A Microinverters Installation and Operation Manual
9© 2023 Enphase Energy Inc. All rights reserved. September 2023
IOM-00028-1.0
PV Rapid Shutdown Equipment (PVRSE)
This product is UL Listed as PV Rapid Shut Down Equipment and conforms with NEC-2014 and NEC-
2017 section 690.12 and C22.1-2015 Rule 64-218 Rapid Shutdown of PV Systems, for AC and DC
conductors, when installed according to the following requirements:
•Microinverters and all DC connections must be installed inside the array boundary. Enphase
further requires installing the microinverters and DC connections under the PV module to
avoid direct exposure to rain, UV, and other harmful weather events.
•The array boundary is defined as 305 mm (1 ft) from the array in all directions or 1 m (3 ft) from
the point of entry inside a building.
This rapid shutdown system must be provided with an initiating device and (or with) a status indicator,
which must be installed in a location accessible to first responders, or it must be connected to an
automatic system that initiates rapid shutdown upon the activation of a system disconnect or
activation of another type of emergency system.
The initiator shall be listed and identified as a disconnecting means that indicates whether it is in the
“off” or “on” position. Examples are:
•Service disconnecting means
•PV system disconnecting means
•Readily accessible switch or circuit breaker
The handle position of a switch or circuit breaker is suitable for use as an indicator. Refer to NEC or
CSA C22.1-2015 for more information.
Additionally, in a prominent location near the initiator device, a placard or label must be provided with
a permanent marking including the following wording:
’PHOTOVOLTAIC SYSTEM EQUIPPED WITH RAPID SHUTDOWN’ The term ‘PHOTOVOLTAIC’ may be
replaced with ‘PV.’ The placard, label, or directory shall be reflective, with all letters capitalized and
having a minimum height of 9.5 mm (3/8") in white on a red background.

IQ7/IQ7+/IQ7X/IQ7A Microinverters Installation and Operation Manual
10 © 2023 Enphase Energy Inc. All rights reserved. September 2023
IOM-00028-1.0
1The Enphase IQ System
The Enphase IQ System includes:
•EnphaseIQ7, IQ7+, IQ7A,and IQ7X Microinverters The smart grid-ready IQ Series
Microinverters convert the DC output of the PV module into grid-compliant AC power.
•IQ Gateway (ENV-IQ-AM1-240) The IQ Gateway is a communication device that provides
network access to the PV array. The IQ Gateway collects production and performance data
from the Enphase IQ Microinverters over on-site AC power lines and transmits the data to the
Enphase App through an internet or cellular modem connection. The IQ Gateway can monitor
up to 600 Enphase IQ Microinverters and up to 39 Enphase IQ Batteries. For details, refer to
the IQ Gateway Installation and Operations Manual.
NOTE:All 208 VAC installations require that you use the IQ Gateway to commission the
Enphase microinverters to propagate correct grid profile settings for 208 VAC trip
points.
•Enphase Installer Portal web-based monitoring and management software. Installers can
use the Enphase Installer Portal to view detailed performance data, manage multiple PV
systems, and remotely resolve issues that might impact system performance. Find out more at
https://enphase.com/en-gb/installers/apps.
•Enphase Installer App for iOS and Android devices. It allows installers to configure the
system while onsite, eliminating the need for a laptop and improving installation efficiency. You
can use the app to:
oConnect to the IQ Gateway over a wireless network for faster system setup and
verification.
oView and email a summary report that confirms a successful installation.
oScan device serial numbers and sync system information with the Enphase
Installer Portal.
•IQ Cable Aggregator Aggregates up to three fully populated 20 A branch circuits and
supports solar arrays of up to 11.5 kW with a single rooftop aggregator.
•IQ Battery
•IQ Field Wireable connectors (Q-CONN-10F and Q-CONN-10M) Make connections from
any IQ Cable or open IQ Field Wireable connector.
This manual describes the safe installation and operation of the Enphase microinverter.
NOTE:To ensure optimal reliability and to meet warranty requirements, the Enphase
microinverter must be installed according to the instructions in this manual.

IQ7/IQ7+/IQ7X/IQ7A Microinverters Installation and Operation Manual
11 © 2023 Enphase Energy Inc. All rights reserved. September 2023
IOM-00028-1.0
1.1 How the Enphase IQ Series Microinverters work
The Enphase microinverter maximizes energy production using a sophisticated maximum power point
tracking (MPPT) algorithm. Each Enphase microinverter individually connects to one PV module in
your array. This configuration enables an individual MPPT to control each PV module, ensuring 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. While an individual PV module in the array may be
affected by shading, soiling, orientation, or PV module mismatch, each Enphase microinverter ensures
top performance for its associated PV module.
System monitoring
Once you install the IQ Gateway and provide an internet connection through a broadband router or
modem, the Enphase IQ Microinverters automatically begin reporting to the Enphase App. The
Enphase App presents current and historical system performance trends and PV system status.
Optimal reliability
Microinverter systems are inherently more reliable than traditional inverters. The distributed nature of
a microinverter system ensures 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).
Ease of design
PV systems using Enphase microinverters are very simple to design and install. You will not need string
calculations or cumbersome traditional inverters. You can install individual PV modules in any
combination of PV module quantity, type, age, and orientation. Each microinverter quickly mounts on
the PV racking 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.
Enphase IQ
Gateway
Enphase
App
Enphase IQ
Battery
Enphase IQ
Cable
Enphase IQ
Microinverter

IQ7/IQ7+/IQ7X/IQ7A Microinverters Installation and Operation Manual
12 © 2023 Enphase Energy Inc. All rights reserved. September 2023
IOM-00028-1.0
2Planning for microinverter installation
The Enphase IQ7 Series Microinverters are compatible with PV modules, as listed in the following table.
The microinverter housing is designed for outdoor installation and complies with the NEMA 250, type
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.
The Enphase IQ Cable is available with connector spacing options to accommodate the installation of
PV modules in portrait or landscape orientation. For IQ Cable ordering information, see IQ Cable
Planning and Ordering.
2.1 Compatibility
The Enphase IQ Series Microinverters are electrically compatible with PV modules, as listed in the
following table. For specifications, see Technical Data. You can refer to the Enphase Compatibility
Calculator to verify PV module electrical compatibility. To ensure mechanical compatibility, be sure to
order the correct connector type for both the microinverter and PV module from your distributor.
WARNING: Risk of fire. The PV module DC conductors must be labeled "PV Wire" or "PV
Cable” to comply with NEC for Ungrounded PV Power Systems.
Microinverter model Connector type PV module* cell count
IQ7-60-2-US MC-4 locking type Pair only with 60-cell/120-half-cell
IQ7A-72-2-US MC-4 locking type Pair with 60-cell/120-half-cell and 72-cell/144-half-cell PV
modules.
IQ7PLUS-72-2-US MC-4 locking type Pair with 60-cell/120-half-cell and 72-cell/144-half-cell PV
modules
IQ7X-96-2-US MC-4 locking type Pair only with 96-cell modules
*Enphase IQ Series Microinverters are compatible with bifacial PV modules if the temperature-adjusted
electrical parameters (maximum power, voltage, and current) of the modules, considering the front side
electrical parameters (i.e., 0% back side gain), are within the allowable microinverter input parameters range.
See Technical Considerations for more information.
2.2 Grounding considerations
The Enphase microinverter models listed in this guide do not require grounding electrode conductors
(GEC), equipment grounding conductors (EGC), or grounded conductor (neutral). Your Authority
Having Jurisdiction (AHJ) may require you to bond the mounting bracket to the racking. If so, use
UL2703 hardware or star washers. The microinverter itself has a Class II double-insulated rating,
which includes ground fault protection (GFP). To support GFP, use only PV modules equipped with DC
cables labeled PV Wire or PV Cable.

IQ7/IQ7+/IQ7X/IQ7A Microinverters Installation and Operation Manual
13 © 2023 Enphase Energy Inc. All rights reserved. September 2023
IOM-00028-1.0
2.3 Branch circuit capacity
Plan your AC branch circuits to meet the following limits for a maximum number of microinverters per
branch when protected with a 20 A (maximum) over current protection device (OCPD).
Maximum* IQ7 Series Microinverters per AC branch circuit
Breaker IQ7 IQ7+ IQ7X
IQ7A
240 VAC 16 13 12
11
208 VAC 13 11 10
11
*Limits may vary. Refer to local requirements to define the number of microinverters per branch in your area.
2.4 Utility service requirements
The Enphase IQ Series Microinverters work with single-phase service. Measure AC line voltages at
the electrical utility connection to confirm that it is within the range shown in the following table.
240 VAC, single phase
L1 to L2
211 to 264 VAC
L1, L2 to ground
106 to 132 VAC
208 VAC, single phase
L1 to L2
183 to 229 VAC
L1, L2 to ground
106 to 132 VAC
NOTE: All 208 VAC installations require that you use the IQ Gateway to commission the
Enphase microinverters to propagate correct grid profile settings for 208 VAC trip points.
2.5 Wire lengths and voltage rise
Select the appropriate AC conductor size to minimize voltage rise when planning the system. Select
the correct wire size based on the distance from the microinverter AC branch circuit's beginning to
the load center breaker. Enphase recommends a voltage rise of less than 2% for the sections from the
microinverter AC branch circuit to the breaker in the load center.
Enphase provides guidance about choosing wire size and maximum conductor lengths in the Voltage
Rise Technical Brief at enphase.com/support. Refer to this brief for voltage rise values in IQ Cables
and how to calculate voltage rise in other wire sections of the system.
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 the high inherent voltage rise on the AC branch circuit.
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 OCPD. Using the IQ Aggregator is a convenient way to do this.

IQ7/IQ7+/IQ7X/IQ7A Microinverters Installation and Operation Manual
14 © 2023 Enphase Energy Inc. All rights reserved. September 2023
IOM-00028-1.0
2.6 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 a lightning and/or surge suppression device. In addition to having some level
of surge suppression, it is also important to have insurance that protects against lightning and
electrical surges. Enphase has tested the following devices:
•Leviton 51110-SRG
•Schneider SquareD HEPD50
NOTE: Protection against lightning and resulting voltage surge must be in accordance
with local standards.
2.7 Parts and tools required
In addition to the microinverters, PV modules, and racking, you will need the following:
Enphase Equipment
•IQ Gateway: Required to monitor production. IQ Gateway (model ENV-IQ-AM1-240)
communications gateway or IQ Combiner (model X-IQ-AM1-240-B, X-IQ-AM1-240-2, X-
IQ-AM1-240-3, X-IQ-AM1-240-3C).
•Enphase Installer App: Download the Enphase Installer App, open it, and log in to
your Enphase account. Use it later to scan the microinverter serial numbers and
connect to the IQ Gateway to track system installation progress. To download, go
to https://enphase.com/installers/apps or scan the QR code.
•Tie wraps or IQ Cable Clips (Q-CLIP-100)
•IQ Sealing Caps (Q-SEAL-10) for any unused drops on the IQ Cable
•IQ Terminator (Q-TERM-10) typically two needed per branch circuit
•IQ Disconnect Tool (Q-DISC-10)
•IQ Field Wireable Connectors (male and female: Q-CONN-10M and Q-CONN-10F)
•IQ Cable:
Cable model Connector spacing PV module orientation
Connector count
per box
Q-12-10-240 1.3 m Portrait 240
Q-12-17-240 2.0 m Landscape (60-cell) 240
Q-12-20-200 2.3 m Landscape (72-cell) 200
Other Items
•AC junction box
•Terminal screwdrivers
•Wire cutters, voltmeter
•Torque wrench, sockets, and wrenches for mounting hardware

IQ7/IQ7+/IQ7X/IQ7A Microinverters Installation and Operation Manual
15 © 2023 Enphase Energy Inc. All rights reserved. September 2023
IOM-00028-1.0
3Enphase microinverter Installation
Installing the Enphase IQ Series Microinverters involves several key steps. Each step listed here is
detailed in the following pages.
Step 1: Position the IQ Cable
Step 2: Position the Enphase IQ Aggregator
Step 3: Mount the microinverters
Step 4: Create an installation map
Step 5: Manage the cabling
Step 6: Connect the microinverters
Step 7: Terminate the unused end of the cable
Step 8: Complete the installation of the junction box
Step 9: Connect the PV modules
Step 10: Energize the system
Horizontal mount
Tie wraps or
cable clips
AC junction box
or isolator

IQ7/IQ7+/IQ7X/IQ7A Microinverters Installation and Operation Manual
16 © 2023 Enphase Energy Inc. All rights reserved. September 2023
IOM-00028-1.0
Vertical mount

IQ7/IQ7+/IQ7X/IQ7A Microinverters Installation and Operation Manual
17 © 2023 Enphase Energy Inc. All rights reserved. September 2023
IOM-00028-1.0
Step 1: Position the IQ Cable
•Plan each cable segment to allow drop connectors on the IQ Cable to align with each PV
module. Allow extra length for slack, cable turns, and any obstructions.
•Mark the approximate centers of each PV module on the PV racking.
•Lay out the cabling along the installed racking for the AC branch circuit.
•Cut each segment of cable to meet your planned needs.
WARNING: When transitioning between rows, secure the cable to the rail to
prevent cable damage or connector damage. Do not count on the connector to
withstand tension.
Step 2: Position the junction box
A. Verify that the AC voltage at the site is within range.
Service type and voltage: L1-L2
240 VAC split-phase 211 to 264 VAC
208 VAC
split-phase
183 to 229 VAC
NOTE:All 208 VAC installations require that you use the IQ Gateway to commission
the Enphase microinverters to propagate correct grid profile settings for 208 VAC
trip points.
The IQ7A Microinverter has the same power rating at 208 V L1-L2 as the IQ7+
Microinverters.
B. Install an Enphase IQ Aggregator or junction box at a suitable location on the racking.
C. Provide an AC connection from the junction box back to the electricity network using
equipment and practices as required by local jurisdictions.

IQ7/IQ7+/IQ7X/IQ7A Microinverters Installation and Operation Manual
18 © 2023 Enphase Energy Inc. All rights reserved. September 2023
IOM-00028-1.0
Step 3: Mount the microinverters
A. Mount the microinverter horizontally, bracket side up or vertically.
•Always place the microinverter under the PV module, protected from direct
exposure to rain, sun, and other harmful weather events. Allow a minimum of
1.9 cm (3/4") between the roof and the microinverter. Also, allow 1.3 cm (1/2")
between the back of the PV module and the top of the microinverter.
•For vertical mount, maintain > 30 cm (12") clearance from the edges of the PV
module to protect the microinverter from direct exposure to rain, UV, and
other harmful weather events.
WARNING: Install the microinverter under the PV module to avoid direct exposure to
rain, UV, and other harmful weather events. Do not mount the microinverter upside
down.
B. Torque the microinverter fasteners as follows. Do not over-torque.
•6 mm (¼") mounting hardware: 5 N m (45 to 50 in-lbs.)
•8 mm (5/16") mounting hardware: 9 N m (80 to 85 in-lbs.)
•When using UL 2703 mounting hardware, use the manufacturer’s
recommended torque value.
DC connector
AC connector
Vertical mount
Horizontal mount

IQ7/IQ7+/IQ7X/IQ7A Microinverters Installation and Operation Manual
19 © 2023 Enphase Energy Inc. All rights reserved. September 2023
IOM-00028-1.0
Step 4: Create an installation map
The Enphase installation map is a diagram of the physical location of each microinverter in your PV
installation. Copy or use the blank map to record microinverter placement for the system or provide
your own layout if you require a larger or more intricate installation map.
Each Enphase microinverter, IQ Gateway, and Battery has a removable serial number label. Build the
installation map by peeling the serial number labels from the microinverter mounting plates and
placing the labels on the map. You will also place the IQ Gateway and IQ Battery serial number on the
map after installation.
After you have created the installation map, use the Enphase Installer App to record serial numbers
and configure the system.
For details, refer to “Detect the Microinverters” in the help topics of the Enphase Installer App.
A. Peel the removable serial number label from each microinverter and affix it to the
respective location on the paper installation map.
B. Peel the label from the IQ Gateway and any Enphase battery, if installed) and affix it to the
installation map.
C. Always keep a copy of the installation map for your records.
Affix serial number labels

IQ7/IQ7+/IQ7X/IQ7A Microinverters Installation and Operation Manual
20 © 2023 Enphase Energy Inc. All rights reserved. September 2023
IOM-00028-1.0
Step 5: Manage the cabling
A. Use cable clips or tie wraps to attach the cable to the racking.
Leave no more than 1.8 m (six feet) between cable clips or tie
wraps.
B. Dress any excess cabling in loops so that it does not contact
the roof. Do not form loops smaller than 12 cm (4¾ ") in
diameter.
WARNING:Tripping Hazard. Loose cables can become a
tripping hazard. Dress the IQ Cable to minimize this potential.
Step 6: Connect the microinverters
A. Connect the microinverter. Listen for a click as the connectors engage.
B. Cover any unused connector with Enphase Sealing Caps. Listen for a click as the
connectors engage.
WARNING:Risk of
electric shock. Risk of
fire. Install sealing caps
on all unused AC
connectors, as these
connectors become
live when the system is
energized. Sealing caps
are required for
protection against
moisture ingress.
NOTE:If you need to remove a sealing cap, use the IQ Disconnect Tool. See
Disconnect a Microinverter for more information.
Cable clip