enphase IQ8MC User manual

INSTALLATION AND OPERATION MANUAL
© 2023 Enphase Energy Inc. All rights reserved. November 2023
USM-00006-2.0
Enphase IQ8MC, IQ8AC, and IQ8HC AC
Module Installation and Operation
Manual

IQ8MC, IQ8AC, and IQ8HC Installation and Operation Manual
2 © 2023 Enphase Energy Inc. All rights reserved. November 2023
USM-00006-2.0
Corporate headquarters contact information
Enphase Energy Inc.
47281 Bayside Pkwy., Fremont, CA 94538, United States, PH: [phone]
https://enphase.com/contact/support
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 for the latest information.
https://enphase.com/en-au/installers/resources/documentation
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/installers/resources/warranty
For Enphase patent information, refer to https://enphase.com/patents
Note for third-party products
Any third-party manufacturer or importer of product(s) used to install or commission Enphase product(s) shall
comply with the applicable EU Directive(s) and requirements in the EEA (European Economic Area). It is the
responsibility of the installer to confirm that all such products are labelled correctly and have the required
compliant supporting documentation.
Manufacturer:
Enphase Energy Inc.
47281 Bayside Pkwy.,
Fremont, CA, 94538
United States
PH: [phone]
Importer:
Enphase Energy Aust. Pty/Ltd.,
88 Market St., South Melbourne
VIC 3205.
PH: [phone]
Compliance with EU Directives
This product complies with the following EU Directives and can be used in the European Union without any
restrictions.
•Electro Magnetic Compatibility (EMC) directive 2014/30/EU
•Low Voltage Directive (LVD) 2014/35/EU
•Restriction of Hazardous Substances (RoHS) 2011/65/EU
The full text of the EU Declaration of Conformity (DoC) is available at the following internet address:
https://enphase.com/en-au/installers/resources/documentation
Audience
This manual is intended for use by professional installation and maintenance personnel.

IQ8MC, IQ8AC, and IQ8HC Installation and Operation Manual
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Contents
Corporate headquarters contact information ...................................................................................................2
Other information. ..............................................................................................................................................2
Note for third-party products...........................................................................................................................2
Audience ..............................................................................................................................................................2
Important safety information............................................................................................................................... 5
IQ8MC, IQ8AC and IQ8HC Microinverter safety instructions ..................................................................... 5
The Enphase Energy System ................................................................................................................................ 9
How does the IQ8 Series Microinverter work ...............................................................................................10
System monitoring ....................................................................................................................................................10
Optimal reliability.......................................................................................................................................................10
Ease of design............................................................................................................................................................ 10
Planning for microinverter installation...............................................................................................................11
Parts and tools required ...................................................................................................................................... 13
Enphase microinverters installation ..................................................................................................................14
Step 1: Install a junction box.............................................................................................................................14
Step 2: Position the IQ Cable...........................................................................................................................15
Step 3: Terminate the unused end of the cable............................................................................................15
Step 4: Prepare the AC Module....................................................................................................................... 17
Step 5: Use the serial number labels to create the installation map ........................................................... 18
Step 6: Mount the AC Module.......................................................................................................................... 18
Step 7: Connect the microinverters as you install the AC Modules............................................................. 18
Step 8: Manage the cabling ..............................................................................................................................19
Step 9. Ground the AC Modules....................................................................................................................... 19
Step 10: Energize the system ..........................................................................................................................20
Step 11: Set up and activate monitoring ........................................................................................................20
Troubleshooting.................................................................................................................................................... 21
Status LED indications and error reporting .................................................................................................. 21
LED operation ............................................................................................................................................................ 21
DC Resistance Low – Power Off condition........................................................................................................... 21
Other faults ............................................................................................................................................................... 22
Troubleshooting a non-functional microinverter ....................................................................................... 22
Disconnecting a microinverter ...................................................................................................................... 23
Removing and replacing a microinverter ...................................................................................................... 23
IQ Cable planning and ordering..................................................................................................................... 25
IQ Cable accessories....................................................................................................................................... 25
Technical data .......................................................................................................................................................27
Technical considerations .................................................................................................................................27
Bifacial modules ................................................................................................................................................27
Anti-islanding ....................................................................................................................................................27
PQ capability curve ..........................................................................................................................................27
Specifications....................................................................................................................................................... 28
IQ8MC-72-M-ACM-INT Microinverter specifications ................................................................................ 28

IQ8MC, IQ8AC, and IQ8HC Installation and Operation Manual
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IQ8AC-72-M-ACM-INT Microinverter specifications .................................................................................30
IQ8HC-72-M-INT Microinverter specifications ........................................................................................... 32
Enphase installation map ................................................................................................................................ 34
Enphase wiring diagram.................................................................................................................................. 35
Revision history.................................................................................................................................................... 37

IQ8MC, IQ8AC, and IQ8HC Installation and Operation Manual
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Important safety information
Read this first
This manual contains important instructions for use during the installation and maintenance of IQ8MC,
IQ8AC, and IQ8HC Microinverter.
IMPORTANT: The IQ8MC, IQ8AC, and IQ8HC Microinverter listed in this manual require an IQ Cable.
An IQ Gateway is required to monitor microinverter performance and, where required, provides
control of the 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 IQ8 Series
Microinverter 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 a
burn injury.
NOTE:
This indicates information that is very important for optimal system operation.
Follow instructions closely.
IQ8MC, IQ8AC and IQ8HC Microinverter 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 Cables 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.
WARNING
: Hot surface
DANGER:
Refer to safety instructions
DANGER
: Risk of electric shock
Refer to
the manual
Double
insulated

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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 breaker or fuse of 20 A or 25 A for single-phase and three-phase
systems. Note that single-phase IQ Relays are rated for 20 A, whereas three-
phase IQ Relays are rated for 25 A.
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.
For shutting down the system, always de-energize the AC branch circuit
breaker. Never disconnect the DC or AC connectors under load.
WARNINGS:
Before installing or using Enphase microinverters, read all instructions and
cautionary markings in the technical descriptions of the Enphase equipment
and the photovoltaic (PV) equipment.
Do not connect Enphase microinverters to the grid or energize 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 and female connectors.
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.
Protection against lightning and resulting voltage surges 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 an Enphase microinverter is the heat sink. Under normal
operating conditions, the temperature could be 20°C above ambient
temperature, but under extreme conditions, microinverters 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 PV modules must be labelled “PV Wire” or “PV Cable”
when paired with Enphase microinverters.
DANGER: Risk of
electric shock.
Risk of fire.
Only competent personnel may connect Enphase microinverters to the
electricity grid.
Do not attempt to repair Enphase microinverters; they contain no user-
serviceable parts and do not require any regular maintenance. If one fails,
contact Enphase Support to obtain a return merchandise authorization (RMA)
number and start the replacement process. Tampering with or opening an
Enphase microinverter will void its 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.

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The maximum open circuit voltage of the PV module must not exceed the
specified maximum input DC voltage of the microinverter. Refer to the Enphase
compatibility calculator to verify PV module electrical compatibility with the
microinverter. Use IQ8 Series Microinverter only with compatible PV modules as
per the Enphase compatibility calculator. Using an electrically incompatible PV
module will void the microinverter’s 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 microinverter.
The 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 microinverters’
warranty.
WARNING: Risk
of equipment
damage.
The 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, and so on. These devices do not behave like standard
PV modules, so operation and compliance are not guaranteed. These devices
may also damage the microinverter by exceeding its electrical rating, making
the system potentially unsafe.
NOTES:
The microinverter has field-adjustable voltage and frequency trip points that
may need to be set depending on local requirements. Only a competent
authorized installer with permission from local electrical authorities should
make adjustments.
NOTES:
Installers must check the manufacturing date of the IQ8 Series Microinverter 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 an IQ Cable, make sure the conductors are
not damaged. If the exposed conductors are damaged, the system may not
function properly.
Do not leave AC connectors on an IQ Cable uncovered for an extended
period. You must cover any unused connector with an IQ Sealing Cap.
Make sure protective IQ Sealing Caps have been installed on all unused AC
connectors. Unused AC connectors are live when the system is energized.
WARNING:
Use an IQ Terminator only once. If you open an IQ Terminator following
installation, the latching mechanism will be destroyed. If the latching
mechanism is defective, do not use the IQ Terminator. Do not circumvent or
manipulate the latching mechanism.
When installing an IQ Cable, secure any loose cable to avoid the risk of
cable insulation abrasion against the roof surface.
NOTES:
When looping an IQ Cable, do not form loops smaller than 120 mm in
diameter.
Provide support for an IQ Cable every 300 mm.
If you need to remove an IQ Sealing Cap, you must use an IQ Disconnect
Tool.
When installing an IQ Cable and accessories, adhere to the following:
• Do not expose the IQ Terminator cap or cable connections to directed,
pressurized liquid (water jets, and so on).
• Do not expose the IQ Terminator or IQ Cable to continuous immersion.

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• Do not expose the IQ Terminator cap or IQ Cable connections to
continuous tension (for example, tension due to pulling or bending the
cable near the connection).
• Use only the compatible IQ connectors.
• Do not allow contamination or debris in the connectors.
• Use the IQ 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 IQ Terminator to come into contact with an open flame.
• Fit the IQ Terminator cap using only the prescribed tools and in the
prescribed manner.
• Use only the IQ Terminator to seal the conductor end of the IQ Cable; no
other method is allowed.
DC Cable safety
NOTES:
•
Ensure proper routing of PV module DC cable using the clips to prevent
the leads from resting on the roof. Do not wrap excess DC cable around
the microinverter.
• Avoid direct exposure to sunlight.
• Avoid sharp edges on racking.
• Avoid cable contacting rough surfaces or moving parts within the
racking system.
• Avoid overly tight bending radii. The minimum bend radii for the DC
cable is eight times the cable’s outer diameter.
•
Avoid overly tight-sized cable clips for routing.

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The Enphase Energy System
Enphase Energy System includes:
• IQ8 Series Microinverter: The smart grid-ready IQ Series Microinverter converts the DC output of
the PV module into grid-compliant AC power.
• IQ Gateway:An IQ Gateway (model ENV-S-WM-230, or ENV-S-WB-230) is required to monitor solar
production, propagate a grid profile to the microinverters, and provide microinverter control at sites
where power export limitation (PEL) and/or phase imbalance management (PIM) is required through
advanced grid functionalities. 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 IQ8 Series
Microinverters over on-site AC power lines and transmits the data to the Enphase App through a
broadband or cellular connection. The IQ Gateway is capable of monitoring up to 300 IQ8 Series
Microinverter. For details, refer to the IQ Gateway Installation and Operations Manual.
• 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-au/installers/apps.
.
• Enphase Installer App: A mobile app for iOS or Android devices. It allows installers to configure a
system while on-site, 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.
This manual describes the safe installation and operation of the IQ8 Series Microinverter.
NOTE: To ensure optimal reliability and to meet warranty requirements, the IQ8 Series
Microinverter must be installed according to the instructions in this manual.

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How does the IQ8 Series Microinverter work
The microinverters maximize energy production by using a sophisticated maximum power point tracking
(MPPT) algorithm. Each 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 produced 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 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 IQ8 Series Microinverters automatically begin reporting to the Enphase Installer Platform. The Enphase
Installer Platform presents current and historical system performance trends and informs you of PV system
status.
Optimal reliability
Microinverter systems are inherently more reliable than conventional string inverters. The distributed nature
of a microinverter system ensures that there is no single point of system failure. IQ8 Series Microinverters are
designed to operate at full power at ambient temperature.
Ease of design
PV systems using Enphase microinverters are very simple to design and install. 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.

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Planning for microinverter installation
IQ8 Series Microinverters support PV modules with 54-cell/108-half-cell, 60-cell/120-half-cell,
66-cell/132-half-cell, and 72-cell/144-half-cell configurations. Modules can be paired as long as the
maximum input voltage is not exceeded and the maximum input current of the inverters at the lowest
and highest temperatures is respected. Installers should not exceed the small-scale technology
certificate (STC) limit on PV module wattage for claiming the STC. See the compatibility calculator at
https://enphase.com/en-au/installers/microinverters/calculator.
The microinverter housing is designed for outdoor installation and complies with the IP67 environmental
enclosure rating standard.
IP67 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.
IQ Cables are available with connector spacing options to accommodate the installation of PV modules in
portrait or landscape orientation. For IQ Cable ordering information, refer to IQ Cable planning and
ordering.
Compatibility
The IQ8 Series Microinverter is electrically compatible with PV modules, as listed in the following table.
For specifications, see “Technical Data” in this manual. You can refer to the Enphase compatibility
calculator at https://enphase.com/en-au/installers/microinverters/calculator to verify PV module
electrical compatibility. To ensure mechanical compatibility, a microinverter’s male and female
connectors must only be mated with the identical type and brand of the male and female connector.
IMPORTANT: IQ8 Series Microinverter includes both AC and DC connectors integrated into the bulkhead.
The AC port connects to the IQ Cable or the IQ Field Wireable Connector. The DC port has been
evaluated by TUV for intermateability with Stäubli-made MC4 connectors, whose cable coupler models
are “PV-KST4/…-UR, PV-KBT4/…-UR, PV-KBT4-EVO2/…-UR, and PV-KST4-EVO2/…-UR”. The DC port of
the inverter must be mated with Stäubli-made MC4 connectors.
Microinverter model Connector type PV module cell count
IQ8MC-72-M-ACM-INT
IQ8AC-72-M-ACM-INT
IQ8HC-72-M-ACM-INT
Stäubli MC4
Pair with 54-cell/108-half-cell, 60-
cell/120-half-cell, 66-cell/132-half-cell,
72-cell/144-half-cell
NOTE: IQ8 Series Microinverter will not begin producing power until the IQ Gateway is installed
and has detected all the microinverters at the site. The grid profile needs to be configured, and the
IQ Gateway must have propagated these settings to the microinverters. Refer to the IQ Gateway
Installation and Operation Manual.
Earthing considerations
The microinverter has a Class II double-insulated rating, which includes ground fault protection (GFP).
Refer to local electrical codes and standards for earthing requirements of PV arrays and racking.

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Branch circuit capacity
Plan your AC branch circuits to meet the following limits for the maximum number of microinverters per
branch circuit.
Maximum* IQ8MC, IQ8AC, and IQ8HC Microinverter per AC branch circuit
Breaker IQ8MC
IQ8AC
IQ8HC
20 A
Single-phase (single-
phase IQ Relay)
12 11 10
25 A
Three-phase (three-
phase IQ Relay)
42
(14 per phase)
39
(13 per phase)
36
(12 per phase)
NOTE: *Refer to local regulations for overcurrent protection device (OCPD) sizing and define the
number of microinverters per branch in your area.
NOTE: A minimum of two IQ8 Series Microinverters are required in systems installed in Australia and
New Zealand to meet AS/NZS 4777.2:2020 requirements.
Electricity network requirements
The IQ8 Series Microinverter works with single-phase or three-phase grid connections. Measure AC line
voltage at the point of connection to confirm that it is within the ranges shown:
Conductor lengths and voltage rise
When planning a system, you must select the appropriate AC conductor size to minimize voltage rise.
Select the correct conductor size based on the distance from the junction with the microinverter AC
branch circuit to the circuit breaker in the electrical panel. Enphase recommends a voltage rise total of
less than 2% from the start of IQ Cable to the point of supply.
Best practice: Centre-feed the branch circuit to minimize voltage rise in a fully populated branch.
This practice substantially reduces the voltage rise as compared with an end-fed branch. To
centre-feed a branch, divide the circuit into two sub-branch circuits protected by a single OCPD.
Lightning and surge suppression
IQ8 Series Microinverters have integral surge protection, greater than most conventional inverters.
However, if a 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. For more details,
refer to https://support.enphase.com/s/article/Surge-Protection-for-Enphase-Microinverter-Systems.
NOTE: Protection against lightning and resulting voltage surges must be in accordance with
local electrical codes and standards.
Single-phase service Three-phase service
L1 to N 184 to 276 VAC
L1 to L2 to L3
319 to 478 VAC
L1, L2, L3 to N
184 to 276 VAC

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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. For installation information, refer to the
IQ Gateway Installation and Operation Manual.
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/en-au/installers/apps or scan the QR code at
right.
•IQ Relay: Single-phase (Q-RELAY-1P-INT) or three-phase (Q-RELAY-3P-INT).
NOTE: The three-phase IQ Relay also provides phase coupling to allow microinverters on all
phases to communicate with the IQ Gateway. Use a Legrand phase coupler (LPC-01) for the
three-phase system for phase coupling if an IQ Relay is not installed in a three-phase system.
•Tie wraps or IQ Cable Clip (ET-CLIP-100): Works with both single-phase and three-phase IQ Cable.
•IQ Sealing Caps (Q-SEAL-10): For any unused connectors on the IQ Cable.
•IQ Terminator (Q-TERM-R-10 for single-phase or Q-TERM-3P-10 for three-phase): Enphase
recommends one terminator for each AC cable segment end; typically, two are needed per branch
circuit.
•IQ Disconnect Tool (Q-DISC-10).
•IQ Field Wireable Connectors (male and female single-phase: Q-CONN-R-10M and Q-CONN-R-
10F; male and female three-phase: Q-CONN-3P-10M and Q-CONN-3P-10F).
•IQ Cable:
Cable model Connector spacing PV module orientation
Connector count
per box
Single-phase
Q-25-10-240
1.3 m
Portrait
240
Q-25-17-240
2.0 m
Landscape (60-cell)
240
Q-25-20-200 2.3 m Landscape (72-cell) 200
Three-phase
Q-25-10-3P-200
1.3 m
Portrait
200
Q-25-17-3P-160 2.0 m Landscape (60-cell) 160
Q-25-20-3P-160
2.3 m
Landscape (72-cell)
160
•IQ Raw Cable (Q-25-RAW-300 for single-phase, Q-25-RAW-3P-300 for three-phase): Length 300
m. Raw cable with no connectors.
Other items
• AC junction box
• Screwdrivers
• Wire cutters, clamp meter
• Torque wrench, sockets, and wrenches for mounting hardware
Android
iOS

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Enphase microinverters installation
Installing the IQ8 Series Microinverter involves the following 11 key steps. Each step listed here is
detailed in the following pages.
Step 1: Install a junction box.
Step 2: Position the IQ Cable.
Step 3: Terminate the unused end of the IQ Cable.
Step 4: Prepare the AC Modules.
Step 5: Create the installation map.
Step 6: Mount the AC Modules.
Step 7: Connect the microinverters.
Step 8: Manage the cabling.
Step 9: Ground the AC Modules.
Step 10: Energize the system.
Step 11: Set up and activate monitoring.
Step 1: Install a junction box
A. Verify that the AC voltage at the site is within range.
B. Install a 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.
Single-phase service Three-phase service
L1 to N 184 to 276 VAC
L1 to L2 to L3
319 to 478 VAC
L1, L2, L3 to N 184 to 276 VAC

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Step 2: Position the IQ Cable
A. Plan each cable segment to allow drop connectors on the IQ Cable to align with each AC Module.
Allow extra length for slack, cable turns, and any obstructions.
B. Mark the approximate centres of each PV module on the PV racking.
C. Lay out the cabling loosely on the roof for the AC branch circuit. Make sure the cable is positioned in
a way that allows you to connect it to each of the microinverters.
D. Cut each segment of cable to meet your planned needs.
WARNING: Do not install the modules in a way that creates continuous tension on the IQ Cable.
E. Connect the IQ Cable to the AC junction box. The IQ Cable follows the wiring colour code:
Black = L1,
Red = L2.
Step 3: Terminate the unused end of the cable
Place sealing caps on unused connectors and terminate the unused end of the IQ Cable as follows.
A. Cover any unused connectors with IQ 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. IQ Sealing Caps are required for
protection against moisture ingress.
NOTE: If you need to remove a sealing cap, you must use an IQ Disconnect Tool. For
more information, refer to the “Removing and replacing a microinverter”.
B. Remove 13 mm (½ inch) of the cable sheath from the conductors. Use the terminator loop to

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measure 13 mm.
C. Slide the hex nut onto the cable.
D. Insert the cable into the terminator body so that each of the two wires lands on opposite
sides of the internal separator. There is a grommet inside the hex nut that should remain in
place.
E. Insert a screwdriver into the slot on the top of the terminator to hold it in place, and torque
the nut to 7 N m.
F. Hold the terminator body stationary with the screwdriver and turn only the hex nut to
prevent conductors from twisting out of the separator.
G. 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 reused. If you unscrew the nut, you must discard the
terminator.

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Step 4: Prepare the AC Module
A. Before installing the AC Module, the microinverters must be lifted from the shipping position. On the
ground, turn the AC Module so that the microinverter faces you. Using both hands, lift the
microinverter. You will hear four clicks as the microinverter locks into the installation position. Ensure
the four latches are locked, and the microinverter is not tilted.
NOTE: If you need to move the module, you can return the microinverter to the shipping position using
an IQ Disconnect Tool. Use the tool to depress the four locking mechanisms on each corner of the
microinverter to return it to the shipping position.
B. Position the AC Modules as planned on the rail.

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Step 5: Use the serial number labels to create the installation map
The Enphase installation map is a diagram of the physical location of each module in your PV installation.
Copy or use the blank map to record module placement for the system, or provide your own layout if you
require a larger or more intricate installation map.
Each AC Module, IQ Gateway, and IQ Battery has a removable serial number label. Build the installation map
by peeling the serial number labels from the modules and placing the labels on the map. You would also place
the IQ Gateway (required) and IQ Battery (optional) serial numbers 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 more information, refer to “Detect the Microinverters” in the help topics of the Enphase Installer App.
A. Remove the label from each module before passing it up to the roof. Apply the label to the proper
position on the installation map.
B. Peel the label from the IQ Gateway (and IQ Battery, if installed) and affix it to the installation map.
C. Always keep a copy of the installation map for your records.
Step 6: Mount the AC Module
A. Install the AC Module with a clearance of at least 10 cm (4 inches) from the roof. Also, make sure that
the microinverter on the underside of the AC Module is at least 19 mm (0.75 inch) away from the roof
or installation surface.
B. Do not place the AC Modules in such a way that places pressure on the microinverters. The minimum
distance from the top edge of the module to the rail should be about 30 cm (12 inches).
C. Make sure that the minimum gap between modules is 10 mm (0.4 in) or greater.
D. Check that rails and clamps are clear of the microinverters by at least 3.8 cm (1.5 inches). Do not
obstruct module drain holes.
Step 7: Connect the microinverters as you install the AC Modules
A. Check again that the AC Modules are not placing pressure on the microinverters. The minimum
distance from the top edge of the module to the rail should be about 30 cm (12 inches).

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B. As you install each AC Module, connect the IQ Cable to the microinverter. Listen for a click as the
connectors engage.
C. Cover any unused connectors on the AC cable with IQ Sealing Caps. Listen for a click as the sealing
caps 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.
Step 8: Manage the cabling
Use cable clips to attach the cable to the module frame. Leave no more than 1.8 m (6 feet) between cable
clips.
Dress any excess cabling in loops so that it does not contact the roof. Do not form loops smaller than 12 cm
(4¾ inch) in diameter.
WARNING: Loose cables can become a tripping hazard. Dress the IQ Cable to minimize this potential.
NOTE: Some modules do not include framing on their shortest side. Cable clips cannot attach to the
frameless side for cable management. Plan to use the longer, framed side for cable management when
this is the case.
Step 9. Ground the AC Modules
Ground the AC Modules per the module manufacturer’s instruction.

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Step 10: Energize the system
A. Turn ON the AC disconnect or circuit breaker for the branch circuit.
B. Turn ON the main utility-grid AC circuit breaker. Your system will start producing power after a five-minute
wait time.
C. Check the LED on the connector side of the microinverter.
LED colour Indicates
Flashing green
Normal operation. AC grid function is normal, and there is communication
with the IQ Gateway. The microinverter’s LED will be flashing green only after
provisioning.
Flashing orange
The AC grid is normal, but there is no communication with the IQ Gateway.
Flashing red The AC grid is either not present or not within the specification.
Solid red
There is an active “DC Resistance Low, Power Off” condition. To reset, refer
to the IQ Gateway Installation and Operation Manual. If the problem persists,
measure resistance between PV+ to EARTH and then PV- to EARTH on the PV
module and then inverter. Anything less than ~7 kΩ will trigger the “DC
Resistance Low - Power Off” condition. Usually, the value is in MΩ on the
inverter or PV module. Swap out faulty PV module or microinverter.
NOTE: For shutting down the system, always de-energize the AC branch circuit breaker. Never
disconnect the DC or AC connectors under load.
Step 11: Set up and activate monitoring
Refer to the IQ Gateway Installation and Operation Manual to install the IQ Gateway and set up system
monitoring and grid management functions. This guide leads you through the following:
•Connecting the IQ Gateway
•Detecting devices and scanning the installation map
•Connecting to the Enphase Installer Portal
•Registering the system
•Building the virtual array
NOTE: When the utility requires a profile other than the profile resident on the microinverter, you
must select an appropriate grid profile for your installation. You can set the grid profile through
the Enphase App, during system registration, or through the Enphase Installer App at any time.
You must have an IQ Gateway to set or change the grid profile. For more information on setting or
changing the grid profile, refer to the IQ Gateway Installation and Operation Manual.