enphase IQ 7 User manual

INSTALLATION AND OPERATION MANUAL
June 11, 2020 141-00047-01
Enphase IQ 7, IQ 7+, IQ 7X, and IQ 7A
Micros with EN4 Bulkhead
IQ 7 Series Micro with EN4 Bulkhead

IQ 7 / IQ 7+ / IQ 7X / IQ 7A with EN4 Bulkhead Installation and Operation
© 2020 Enphase Energy Inc. All rights reserved. 141-00047-01
2
Corporate Headquarters Contact Information
Enphase Energy Inc.
47281 Bayside Parkway
Fremont, CA 94538 USA
enphase.com/en-us/support/contact
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 (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/.
© 2020 Enphase Energy Inc. All rights reserved. Enphase, the Enphase logo, IQ 7, IQ 7+, IQ 7X, IQ 7A,
IQ Envoy, IQ Combiner, IQ Microinverter, Installer Toolkit, Enlighten and other trademarks or service
names are the trademarks of Enphase Energy, Inc. Data subject to change.
Audience
This manual is intended for use by professional installation and maintenance personnel.

IQ 7 / IQ 7+ / IQ 7X / IQ 7A with EN4 Bulkhead Installation and Operation
© 2020 Enphase Energy Inc. All rights reserved. 141-00047-01
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Table of Contents
Important Safety Information .......................................................................................................................................... 5
Read this First.................................................................................................................................................. 5
EN4 Bulkhead Microinverters........................................................................................................................... 5
Product Labels ................................................................................................................................................. 5
Safety and Advisory Symbols........................................................................................................................... 5
IQ 7 Series Microinverter Safety Instructions................................................................................................... 6
PV Rapid Shutdown Equipment (PVRSE) ....................................................................................................... 8
The Enphase IQ System................................................................................................................................................. 9
How the Enphase IQ Series Micros Work...................................................................................................... 10
System Monitoring..................................................................................................................................... 10
Optimal Reliability...................................................................................................................................... 10
Ease of Design........................................................................................................................................... 10
Planning for Microinverter Installation........................................................................................................................... 11
Compatibility................................................................................................................................................... 11
About EN4 Bulkhead Microinverters .............................................................................................................. 12
Grounding Considerations.............................................................................................................................. 12
Branch Circuit Capacity.................................................................................................................................. 13
Utility Service Requirements.......................................................................................................................... 13
Wire Lengths and Voltage Rise...................................................................................................................... 13
Lightning and Surge Suppression.................................................................................................................. 14
Parts and Tools Required............................................................................................................................................. 14
Enphase Equipment....................................................................................................................................... 14
Other Items..................................................................................................................................................... 14
Enphase Microinverter Installation................................................................................................................................ 15
Step 1: Position the Enphase Q Cable........................................................................................................... 16
Step 2: Position the Enphase Q Aggregator or Junction Box ........................................................................ 16
Step 3: Mount the Microinverters ................................................................................................................... 17
Step 4: Create an Installation Map................................................................................................................. 18
Step 5: Manage the Cabling........................................................................................................................... 19
Step 6: Connect the Microinverters................................................................................................................ 19
Step 7: Terminate the Unused End of the Cable............................................................................................ 20
Step 8: Complete Installation of the Enphase Q Aggregator or Junction Box................................................ 21
Step 9: Connect the PV Modules................................................................................................................... 21
Step 10: Energize the System........................................................................................................................ 22
Set Up and Activate Monitoring...................................................................................................................... 22
Troubleshooting............................................................................................................................................................ 23
Status LED Indications and Error Reporting .................................................................................................. 23
LED Operation........................................................................................................................................... 23
DC Resistance Low –Power Off Condition............................................................................................... 23
Other Faults............................................................................................................................................... 24
Troubleshoot an Inoperable Microinverter...................................................................................................... 25
Disconnect a Microinverter............................................................................................................................. 26
Install a Replacement Microinverter............................................................................................................... 27

IQ 7 / IQ 7+ / IQ 7X / IQ 7A with EN4 Bulkhead Installation and Operation
© 2020 Enphase Energy Inc. All rights reserved. 141-00047-01
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Ordering Replacement Parts.......................................................................................................................... 29
Enphase Q Cable Planning and Ordering...................................................................................................... 29
Connector Spacing Options ........................................................................................................................... 29
Cabling Options.............................................................................................................................................. 29
Enphase Q Cable Accessories....................................................................................................................... 30
Technical Data.............................................................................................................................................................. 31
Technical Considerations............................................................................................................................... 31
Specifications................................................................................................................................................. 32
IQ7-60-E-US Microinverter Specifications................................................................................................. 32
IQ7PLUS-72-E-US Microinverter Specifications........................................................................................ 35
IQ7X-96-E-US Microinverter Specifications............................................................................................... 37
IQ7A-72-E-US Microinverter Specifications............................................................................................... 39
Q Cable Specifications............................................................................................................................... 41
Enphase Connector Ratings...................................................................................................................... 41
Enphase Installation Map............................................................................................................................... 42
Sample Wiring Diagram ................................................................................................................................. 43

IQ 7 / IQ 7+ / IQ 7X / IQ 7A with EN4 Bulkhead Installation and Operation
© 2020 Enphase Energy Inc. All rights reserved. 141-00047-01
5
Important Safety Information
Read this First
This manual contains important instructions for use during installation and maintenance of the IQ 7™Series
Microinverters with the Enphase EN4 bulkhead.
EN4 Bulkhead Microinverters
IMPORTANT: Enphase IQ Series EN4 Microinverters include AC and DC connectors integrated into the microinverter
bulkhead. The AC port of the Enphase EN4 bulkhead connects to an Enphase Q Cable or Enphase Field Wireable
Connector. The DC port of the EN4 bulkhead has been evaluated by UL for intermatability with TE PV4-S
SOLARLOK connectors, and several other connectors, that have been Listed and identified for intermatability with the
Enphase EN4 bulkhead connector, which allows you to plug them directly into the IQ7 Series microinverter with EN4
bulkhead. For other connector combinations, Enphase bulkhead adapters are required.
An IQ Envoy is required to monitor performance of the IQ Microinverters. The Q Accessories work only with Enphase
IQ Series Microinverters.
Product Labels
The following symbols appear on the product label and are described here:
WARNING: Hot surface.
DANGER: Refer to safety instructions.
DANGER: Risk of electrical shock.
Refer to manual
Double-insulated
Safety and Advisory Symbols
To reduce the risk of electric shock, and to ensure the safe installation and operation of the EnphaseIQ 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.

IQ 7 / IQ 7+ / IQ 7X / IQ 7A with EN4 Bulkhead Installation and Operation
© 2020 Enphase Energy Inc. All rights reserved. 141-00047-01
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IQ 7 Series Microinverter Safety Instructions
General Safety
DANGER: Risk of
electric shock.
Risk of fire.
Only use electrical system components approved for wet locations.
Only qualified personnel should install, troubleshoot, or replace Enphase Microinverters or Enphase
Q Cable and Accessories.
Ensure that all AC and DC wiring is correct and that none of the AC or DC wires 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 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. While connectors are rated for
disconnect under load, Enphase does not recommend disconnecting the DC connectors under load.
WARNINGS:
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 of the installation procedures and have received approval from the electrical utility.
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
matching male/female connector.
NOTES:
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.
Use recommended disconnection tools to prevent damage to the microinverter
Protection against lightning and resulting voltage surge must be in accordance with local standards.
Perform all electrical installations in accordance with all applicable local electrical codes, such as:
the Canadian Electrical Code, Part 1; ANSI requirements; and NPFA 70 (NEC).
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, but under extreme conditions the microinverter can
reach a temperature of 90° C. To reduce 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.
DANGER: Risk of
electric shock. Risk
of fire.
Only qualified personnel may connect the Enphase Microinverter to the utility grid.
Do not attempt to repair the Enphase Microinverter; it contains no user-serviceable parts. If it fails,
contact Enphase 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 Enphase Q Cable, PV
module, or the 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.

IQ 7 / IQ 7+ / IQ 7X / IQ 7A with EN4 Bulkhead Installation and Operation
© 2020 Enphase Energy Inc. All rights reserved. 141-00047-01
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Microinverter Safety
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.
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, and 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.
NOTES:
The Enphase Microinverter has field-adjustable voltage and frequency trip points that may need to
be set, depending upon local requirements. Only an authorized installer with the permission and
following requirements of the local electrical authorities should make adjustments.
Enphase Q Cable Safety
DANGER: Risk of
electric shock.
Do not install the Enphase Q Cable terminator while power is connected.
WARNING: Risk
of electric shock.
Risk of fire.
When stripping the sheath from the Q Cable, make sure the conductors are not damaged. If the
exposed wires are damaged, the system may not function properly.
Do not leave AC connectors on the Q Cable uncovered for an extended period. You must cover any
unused connector with a sealing cap.
Make sure protective sealing caps have been installed on all 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.
When installing the Enphase Q Cable, secure any loose cable to minimize tripping hazard.
NOTES:
When looping the Enphase Q Cable, do not form loops smaller than 4.75”(12 cm) in diameter.
Provide support for the Enphase Q-Cable every 1.8m (6 feet).
If you need to remove a sealing cap, you must use the Enphase disconnect tool.
When installing the Enphase Q Cable and accessories, adhere to the following:
•Do not expose the terminator cap or cable connections to directed, pressurized liquid (water
jets, etc.).
•Do not expose the terminator or cable to continuous immersion.
•Do not expose the terminator cap or cable connections to continuous tension (e.g., 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 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 Enphase Q Cable; no other method is
allowed.

IQ 7 / IQ 7+ / IQ 7X / IQ 7A with EN4 Bulkhead Installation and Operation
© 2020 Enphase Energy Inc. All rights reserved. 141-00047-01
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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
that the microinverters and DC connections be installed 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) status indicator which must be
installed in a location accessible to first responders, or it must be connected to an automatic system which 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 plainly 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 red background.

IQ 7 / IQ 7+ / IQ 7X / IQ 7A with EN4 Bulkhead Installation and Operation
© 2020 Enphase Energy Inc. All rights reserved. 141-00047-01
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The Enphase IQ System
The Enphase IQ System includes:
•EnphaseIQ 7™v, IQ 7+™, IQ 7A™ and IQ 7X™Micros The smart grid ready IQ Series Micros
convert the DC output of the PV module into grid-compliant AC power.
•Enphase IQ Envoy™(ENV-IQ-AM1-240) The Enphase IQ Envoy is a communication device that
provides network access to the PV array. The IQ Envoy collects production and performance data
from the Enphase IQ Microinverters over on-site AC power lines and transmits the data to
Enlighten through an Internet or cellular modem connection. The IQ Envoy is capable of
monitoring up to 600 Enphase IQ Microinverters and up to 39 Enphase IQ Batteries. For details,
refer to Enphase IQ Envoy Installation and Operations Manual.
NOTE: All 208 VAC installations require that you use the Enphase IQ Envoy to commission
the Enphase Microinverters to propagate correct grid profile settings for 208 VAC trip points.
•Enphase Enlighten™web-based monitoring and management software. Installers can use
Enlighten Manager to view detailed performance data, manage multiple PV systems, and
remotely resolve issues that might impact system performance. Find out more at
enphase.com/enlighten.
•Enphase Installer Toolkit™mobile 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 Envoy 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 Enlighten monitoring
software
•Enphase Q Aggregator (Q-BA-3-1P-60) Aggregates up to three fully populated 20A branch
circuits and supports solar arrays of up to 11.5kWac with a single rooftop aggregator
•Enphase IQ Battery™ (IQ6PLUS-B1200-LL-I-US00-RV1)
•Enphase Field Wireable connectors (Q-CONN-10F and Q-CONN-10M) Make connections
from any Q Cable, or open 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.

IQ 7 / IQ 7+ / IQ 7X / IQ 7A with EN4 Bulkhead Installation and Operation
© 2020 Enphase Energy Inc. All rights reserved. 141-00047-01
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How the Enphase IQ Series Micros Work
The Enphase Microinverter maximizes energy production by 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 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 Enphase IQ Envoy and provide an internet connection through a broadband router or
modem, the Enphase IQ Microinverters automatically begin reporting to Enlighten. Enlighten presents
current and historical system performance trends and 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).
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, 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.

IQ 7 / IQ 7+ / IQ 7X / IQ 7A with EN4 Bulkhead Installation and Operation
© 2020 Enphase Energy Inc. All rights reserved. 141-00047-01
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Planning for Microinverter Installation
The Enphase IQ 7 Micro is compatible with 60-cell PV modules, and the IQ 7+ Micro and IQ 7A Micro
support PV modules with 60 or 72 Cells. The IQ 7X requires a 96-cell PV module. All of them install
quickly and easily. 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 Q Cable is available with connector spacing options to accommodate installation of PV
modules in portrait or landscape orientation. For Enphase Q Cable ordering information, see “Enphase Q
Cable Planning and Ordering” on page 29.
Compatibility
The Enphase IQ Series Micros are electrically compatible with PV modules as listed in the following
table. For specifications, see “Technical Data”on page 31 of this manual. You can refer to the Enphase
Compatibility Calculator at: enphase.com/en-us/support/module-compatibility to verify PV module
electrical compatibility. To ensure mechanical compatibility, be sure to order the correct connector type
for both 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
IQ7A-72-E-US*
EN4 locking
Pair with 60 or 72-cell modules. IQ7A
installs are not recommended with bi-
facial modules and use of such may
impact the limited warranty.
IQ7-60-E-US*
EN4 locking
Pair only with 60-cell modules
IQ7PLUS-72-E-US*
EN4 locking
Pair with 60 or 72-cell modules
IQ7X-96-E-US*
EN4 locking
Pair only with 96-cell modules
* The Enphase IQ Series EN4 Bulkhead Microinverters include AC and DC connectors integrated into the
microinverter bulkhead. The AC port of the Enphase EN4 bulkhead connects to an Enphase Q Cable or
Enphase Field Wireable Connector. The DC port of the EN4 Bulkhead has been evaluated by UL for
intermatability with TE PV4-S SOLARLOK connectors and other connectors as indicated in this
document.
If your PV modules have TE PV4-S SOLARLOK connectors, or other connectors Listed and identified
for intermatability with the Enphase EN4 bulkhead connector, you may plug them directly into the IQ7
Series microinverter with EN4 bulkhead. For other connector combinations, Enphase bulkhead
adapters are required.

IQ 7 / IQ 7+ / IQ 7X / IQ 7A with EN4 Bulkhead Installation and Operation
© 2020 Enphase Energy Inc. All rights reserved. 141-00047-01
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About EN4 Bulkhead Microinverters
If your PV modules have TE PV4S SOLARLOK connectors, or other connectors Listed and identified for
intermatability with the Enphase EN4 bulkhead connector, you may plug them directly into the IQ 7 Series
microinverter with EN4 bulkhead. For other connector combinations, Enphase bulkhead adapters are
required. For models with the suffix “-E”, the bulkhead connectors are evaluated for use with specific DC
connectors. See the Listed connectors in the following table:
PV Module Connectors Listed and Identified for Intermatability with the Enphase EN4 Bulkhead Connector
Bulkhead
PV module connectors
Enphase part number
830-00533
(EN4 bulkhead)
Manufacturer
Type
(Jinko Solar) Jiangxi Jinko PV Material Co. Ltd.
PV-JK03M-F/2B (female) and
PV-JK03M-M/2B (male)
TE Connectivity (Tyco Electronics)
PV4-SF4.0 (female) and
PV4-SM4.0 (male)
Canadian Solar
T4-PC-1 (female and male)
Enphase Bulkhead Adapters
Adapter
Part
Number
Model SKU
Maximum
Voltage
EN4 (TE PV4-S SOLARLOK) 150mm/5.9” to MC4*
860-00311
ECA-EN4-S22
80 VDC
EN4 (TE PV4-S SOLARLOK) to 150mm/5.9” non-
terminated cable.**
860-00312
ECA-EN4-FW
80 VDC
EN4 (TE PV4-S SOLARLOK) 600mm/23.6” to MC4 for
use with split cell modules or PV modules with short DC
cable*
860-00315
ECA-EN4-S22-L
80 VDC
*Qualified per UL subject 9703.
**For field wiring of UL certified DC connectors.
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.

IQ 7 / IQ 7+ / IQ 7X / IQ 7A with EN4 Bulkhead Installation and Operation
© 2020 Enphase Energy Inc. All rights reserved. 141-00047-01
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Branch Circuit Capacity
Plan your AC branch circuits to meet the following limits for maximum number of microinverters per
branch when protected with a 20 amp (maximum) over current protection device (OCPD).
Maximum* IQ 7 Micros
per AC branch circuit (240
VAC)
Maximum* IQ 7+ Micros
per AC branch circuit
(240 VAC)
Maximum* IQ 7X Micros
per AC branch circuit
(240 VAC)
Maximum* IQ 7A Micros
per AC branch circuit
(240 VAC)
16
13
12
11
Maximum* IQ 7 Micros
per AC branch circuit (208
VAC)
Maximum* IQ 7+ Micros
per AC branch circuit
(208 VAC)
Maximum* IQ 7X Micros
per AC branch circuit
(208 VAC)
Maximum* IQ 7A Micros
per AC branch circuit
(208 VAC)
13
11
10
11
*Limits may vary. Refer to local requirements to define the number of microinverters per branch in your area.
Utility Service Requirements
The Enphase IQ Series Micros work with single-phase service. Measure AC line voltages at the electrical
utility connection to confirm that it is within the ranges shown:
240 Volt AC, Single Phase
L1 to L2
211 to 264 VAC
L1, L2 to ground
106 to 132 VAC
208 Volt AC, 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 Enphase IQ Envoy to
commission the Enphase Microinverters to propagate correct grid profile settings for
208 VAC trip points.
Wire Lengths and Voltage Rise
When planning the system, you must select the appropriate AC conductor size to minimize 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. Enphase recommends a voltage rise total 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 Enphase Q
Cables and on 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 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 Q Aggregator is a convenient way to do this.

IQ 7 / IQ 7+ / IQ 7X / IQ 7A with EN4 Bulkhead Installation and Operation
© 2020 Enphase Energy Inc. All rights reserved. 141-00047-01
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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.
Parts and Tools Required
In addition to the microinverters, PV modules, and racking, you will need the following:
Enphase Equipment
•Enphase IQ Envoy: Required to monitor production. IQ Envoy (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 Toolkit: Download the Enphase Installer Toolkit mobile app,
open it, and log in to your Enlighten account. Use it later to scan microinverter
serial numbers and connect to the IQ Envoy to track system installation progress.
To download, go to enphase.com/toolkit or scan the QR code at right.
•Tie wraps or Q Cable Clips (Q-CLIP-100)
•Enphase Sealing Caps (Q-SEAL-10) for any unused drops on the Enphase Q Cable
•Enphase Terminator (Q-TERM-10) typically two needed per branch circuit
•Enphase Disconnect Tool (Q-DISC-10)
•Enphase Field Wireable Connectors (male and female: Q-CONN-10M and Q-CONN-10F)
•Enphase Q Cable:
Cable Model
Connector Spacing
PV Module
Orientation
Connector Count per
box
Q-12-10-240
1.3m
Portrait
240
Q-12-17-240
2.0m
Landscape (60-cell)
240
Q-12-20-200
2.3m
Landscape (72-cell)
200
Other Items
•Enphase Q Aggregator or AC junction box
•Number 2 and 3 screwdrivers
•Wire cutters, voltmeter
•Torque wrench, sockets, wrenches for mounting hardware
•DC disconnect tool for the DC connector type used

IQ 7 / IQ 7+ / IQ 7X / IQ 7A with EN4 Bulkhead Installation and Operation
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Enphase Microinverter Installation
Installing the Enphase IQ Series Micros involves several key steps. Each step listed here is detailed in
the following pages.
Step 1: Position the Enphase Q Cable
Step 2: Position the Enphase Q Aggregator or Junction Box
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 Installation of the Enphase Q Aggregator or Junction Box
Step 9: Connect the PV Modules
Step 10: Energize the System

IQ 7 / IQ 7+ / IQ 7X / IQ 7A with EN4 Bulkhead Installation and Operation
© 2020 Enphase Energy Inc. All rights reserved. 141-00047-01
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Step 1: Position the Enphase Q Cable
A. Plan each cable segment to allow drop connectors on the Enphase Q Cable to align with
each PV module. Allow extra length for slack, cable turns, and any obstructions.
B. Mark the approximate centers of each PV module on the PV racking.
C. Lay out the cabling along the installed racking for the AC branch circuit.
D. 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 connector to withstand tension.
Step 2: Position the Enphase Q Aggregator or Junction Box
A. Verify that AC voltage at the site is within range.
Service Type and Voltage: L1-L2
240 VAC Split-Phase
211 to 264 VAC
208 VAC Single-Phase
183 to 229 VAC
NOTES: All 208 VAC installations require that you use the Enphase IQ Envoy 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 208V L1-L2 as the IQ7+.
B. Install an Enphase Q 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.

IQ 7 / IQ 7+ / IQ 7X / IQ 7A with EN4 Bulkhead Installation and Operation
© 2020 Enphase Energy Inc. All rights reserved. 141-00047-01
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Step 3: Mount the Microinverters
A. Mount the microinverter bracket side up (as shown) and under the PV module, away
from rain and sun. 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.
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.
WARNING: IQ7A installs are not recommended with bi-facial modules, and use of
such may impact the limited warranty.
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
AC Connector
DC Connector
IQ 7 Series Micro with EN4 Bulkhead

IQ 7 / IQ 7+ / IQ 7X / IQ 7A with EN4 Bulkhead Installation and Operation
© 2020 Enphase Energy Inc. All rights reserved. 141-00047-01
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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 on page 41 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, Envoy, and Battery have 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 Enphase IQ Envoy and IQ Battery serial number on the
map after installation.
After you have created the installation map, use the Enphase Installer Toolkit mobile app to record serial
numbers and configure the system.
For details, refer to “Detect the Microinverters” in the help topics of the Installer Toolkit 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 Envoy 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

IQ 7 / IQ 7+ / IQ 7X / IQ 7A with EN4 Bulkhead Installation and Operation
© 2020 Enphase Energy Inc. All rights reserved. 141-00047-01
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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 Enphase Q 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, you must use the Enphase Disconnect Tool.
See “Disconnect a Microinverter” on page 26.
Cable clip
IQ 7 Series Micro with
EN4 Bulkhead

IQ 7 / IQ 7+ / IQ 7X / IQ 7A with EN4 Bulkhead Installation and Operation
© 2020 Enphase Energy Inc. All rights reserved. 141-00047-01
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Step 7: Terminate the Unused End of the Cable
Terminate the unused end of the Enphase Q Cable as follows.
A. Remove 13 mm (½ inch) of the cable sheath from the
conductors. Use the terminator loop to measure 13 mm.
B. Slide the hex nut onto the cable. There is a grommet inside
of the hex nut that should remain in place.
C. Insert the cable into the terminator body so that each of the
two wires land on opposite sides of the internal separator.
D. Insert a screwdriver into the slot on the top of the terminator to hold it in place, and torque the
nut to 7 Nm.
E. Hold the terminator body stationary with the screwdriver and turn only the hex nut to prevent
the conductors from twisting out of the separator.
NOTE: Turn only the hex nut to prevent conductors from twisting out of the separator.
F. Attach the terminated cable end to the PV racking with
a cable clip or tie wrap so that the cable and terminator
do not touch the roof.
WARNING: The terminator cannot be re-
used. If you unscrew the nut, you must
discard the terminator.
Terminator
Body
13mm
Internal view