enphase IQ8P User manual

INSTALLATION AND OPERATION MANUAL
© 2023 Enphase Energy Inc. All rights reserved. September 2023
IOM-00001-1.0
IQ8P Microinverters

IQ8P Microinverter Installation and Operation Manual
2 © 2023 Enphase Energy Inc. All rights reserved. September 2023
IOM-00001-1.0
Corporate headquarters contact information
Enphase Energy Inc.
47281 Bayside Pkwy.,
Fremont, CA 94538
United States of America, 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-za/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.
Audience
This manual is intended for use by professional installation and maintenance personnel.

IQ8P Microinverter Installation and Operation Manual
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Contents
Corporate headquarters contact information ...................................................................................... 2
Other information....................................................................................................................................... 2
Audience ...................................................................................................................................................... 2
Important safety information ................................................................................................................... 5
Read this first .......................................................................................................................................... 5
Product labels......................................................................................................................................... 5
Safety and advisory symbols............................................................................................................... 5
IQ8P Microinverters safety instruction.............................................................................................. 6
The Enphase system................................................................................................................................... 9
How the Enphase IQ8P Microinverters work..................................................................................... 9
System monitoring ...................................................................................................................................... 10
Optimal reliability.........................................................................................................................................10
Ease of design ..............................................................................................................................................10
Planning for microinverter installation ................................................................................................. 10
Compatibility ..........................................................................................................................................11
Earthing considerations........................................................................................................................11
Branch circuit capacity.........................................................................................................................11
Electricity network requirements.......................................................................................................12
Conductor lengths and voltage rise ..................................................................................................12
Lightning and surge suppression .......................................................................................................12
Labelling .................................................................................................................................................12
Parts and tools required...........................................................................................................................13
Enphase equipment ..............................................................................................................................13
Other items.............................................................................................................................................13
Enphase microinverters installation.......................................................................................................14
Step 1: Position the IQ Cable ...............................................................................................................15
Step 2: Position the junction box........................................................................................................15
Step 3: Mount the microinverters.......................................................................................................16
Step 4: Create an installation map ..................................................................................................... 17
Step 5: Manage the cabling .................................................................................................................18
Step 6: Connect the microinverters...................................................................................................18
Step 7: Terminate the unused end of the IQ Cable ..........................................................................19
Step 8: Complete the installation of the junction box....................................................................20
Step 9: Connect the PV modules.......................................................................................................20
Step 10: Energize the system..............................................................................................................20
Set up and activate monitoring ..........................................................................................................21

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Troubleshooting ........................................................................................................................................21
Status LED indications and error reporting......................................................................................21
LED operation........................................................................................................................................21
DC Resistance Low – Power Off condition...................................................................................... 22
Other faults ........................................................................................................................................... 22
Troubleshoot an inoperable microinverter ..................................................................................... 23
Disconnect a microinverter................................................................................................................ 24
Install a replacement microinverter..................................................................................................24
Enphase IQ Cable planning and ordering ........................................................................................ 25
Connector spacing options................................................................................................................ 25
IQ Cable options...................................................................................................................................26
Enphase IQ Cable accessories........................................................................................................... 26
Technical data........................................................................................................................................... 27
Technical considerations.................................................................................................................... 27
Bifacial modules ................................................................................................................................... 27
PQ capability curve ............................................................................................................................. 28
Specifications ...........................................................................................................................................29
IQ8P-72-2-INT Microinverters...........................................................................................................29
Enphase installation map ....................................................................................................................32
Sample wiring diagram........................................................................................................................33
Revision history ........................................................................................................................................34

IQ8P Microinverter Installation and Operation Manual
5 © 2023 Enphase Energy Inc. All rights reserved. September 2023
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Important safety information
Read this first
This manual contains important instructions for use during the installation and maintenance of the
IQ8P Microinverters.
IMPORTANT: Enphase IQ8P 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 IQ8P
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 IQ8P
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.
WARNING
: Hot surface
DANGER:
Refer to safety instructions
DANGER
: Risk of electric shock
Refer to manual
Double
-insulated

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IQ8P Microinverters safety instruction
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 (single-phase and multi-phase) 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 a 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.
WARNINGS:
Before installing or using the Enphase microinverter, read all instructions and
cautionary markings in the technical description, on the Enphase equipment,
and 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.
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 surge must be by local
electrical codes and standards.
Perform all electrical installations by 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.
DANGER: Risk
of electric
Only competent personnel may connect the Enphase microinverter to the
electricity grid.

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shock. Risk of
fire.
Do not attempt to repair the Enphase microinverter; it contains no user-
serviceable parts. If it fails, contact Enphase customer 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 IQ8P 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.
NOTES:
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 adjust.
NOTES:
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.
Enphase 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, 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 the 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 the IQ Terminator only once. If you open the IQ Terminator following
installation, the latching mechanism is destroyed. If the latching mechanism

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is defective, do not use the IQ Terminator. Do not circumvent or manipulate
the latching mechanism.
When installing the IQ Cable, secure any loose cable to avoid the risk of
cable insulation abrasion against the roof surface.
NOTES:
When looping the IQ Cable, do not form loops smaller than 120 mm in
diameter.
Provide support for the IQ Cable every 300 mm.
If you need to remove IQ Sealing Cap, you must use the IQ Disconnect Tool.
When installing the IQ Cable and accessories, adhere to the following:
• Do not expose the IQ Terminator cap or cable connections to directed,
pressurized liquid (water jets, etc.).
• Do not expose the IQ Terminator or IQ Cable to continuous immersion.
• 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 Enphase 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 are eight × cable outer diameter.
• Avoid overly tight-sized cable clips for routing.

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The Enphase system
The Enphase system includes:
•IQ8P Microinverters: The smart grid-ready IQ8P Microinverters convert the DC
output of the PV module into grid-compliant AC power.
•IQ Gateway: An IQ Gateway (model ENV-S-EM-230, 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 IQ8P Microinverters over on-site AC power lines and
transmits the data to Enphase App through a broadband or cellular connection. The
IQ Gateway is capable of monitoring up to 300 IQ8P Microinverters and up to 20 IQ
Batteries. For details, refer to Enphase IQ-Gateway Installation and Operations
Manual.
•Enphase Installer Portal:A 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-
za/installers/apps.
•Enphase Installer App: A 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:
Connect to the IQ Gateway over a wireless network for faster
system setup and verification.
View and e-mail a summary report that confirms a successful
installation.
Scan device serial numbers and sync system information with the
Enphase Installer Portal.
•IQ Battery: Offers energy storage solutions.
•Field Wireable Connectors (single-phase: Q-CONN-R-10F and Q-CONN-R-
10M; multi-phase: Q-CONN-3P-10M and Q-CONN-3P-10F): Make
connections from any IQ Cable.
This manual describes the safe installation and operation of the IQ8P Microinverters.
NOTE: To ensure optimal reliability and to meet warranty requirements, Enphase
microinverters must be installed according to the instructions in this manual.
How the Enphase IQ8P Microinverters 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
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,

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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 IQ8P Microinverters automatically begin reporting to the Enphase Installer Platform.
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 in the PV
system. Enphase microinverters are designed to operate at full power at ambient temperatures as
high as 65°C (149°F).
Ease of design
PV systems using Enphase microinverters are very simple to design and install. You will not need to
perform cumbersome string sizing calculations like conventional string 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
cables connect from the PV module directly to the co-located microinverter, eliminating the risk of
personnel exposure to dangerously high DC voltage.
Planning for microinverter installation
The IQ8P Microinverters support PV modules with 60-cell/120-half-cell, 66-cell/132-half-cell, 72-
cell/144-half-cell, 78-cell/156-half-cell, configuration. No enforced DC/AC ratio and maximum input
power. Modules can be paired if the maximum input voltage is not exceeded and the maximum input
current of the inverter at the lowest and highest temperatures is respected. See the compatibility
calculator at https://enphase.com/en-za/installers/microinverters/calculator.
IQ8P Microinverters install quickly and easily. 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.

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The 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 Enphase IQ
Cable planning and ordering.
Compatibility
The IQ8P 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 at:
https://enphase.com/en-za/installers/microinverters/calculator to verify PV module electrical
compatibility. To ensure mechanical compatibility, the microinverter’s male and female connectors
must only be mated with the identical type and brand of a male and female connectors.
IMPORTANT: The IQ8P Microinverters include both AC and DC connectors integrated into the
bulkhead. The AC port connects to IQ Cable or Enphase 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.
WARNING: Risk of fire. The DC conductors of the PV module must be labeled “PV Wire” or
“PV Cable” when paired with the Enphase microinverter.
Microinverter model Connector type PV module cell count
IQ8P-72-2-INT Stäubli MC4
Pair with 60-cell/120-half-cell,
66-cell/132-half-cell, 72-
cell/144-half-cell, 78-cell/156-
half-cell
NOTE: Some Enphase microinverters will not begin exporting power until the IQ Gateway is
installed and has detected all the microinverters at the site. In addition, the grid profile
needs to be configured and the IQ Gateway must have propagated these settings to the
microinverters. For instructions on this procedure, refer to the IQ Gateway Installation and
Operation Manual at https://enphase.com/en-za/installers/resources/documentation.
Earthing considerations
The microinverter 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.
Refer to local electrical codes and standards for earthing requirements of PV array and racking.
Branch circuit capacity
Plan your AC branch circuits to meet the following limits for a maximum number of microinverters per
branch circuit.
Maximum* IQ Microinverters per AC branch circuit
Breaker
IQ8P
20 A
Single-phase
8
20 A
Multi-phase
24
(8 per phase)
25 A
Multi-phase**
27
(9 per phase)

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NOTE: * Refer to local regulations for overcurrent protection device (OCPD) sizing and to
define the number of microinverters per branch in your area.
** This breaker option is not available in Europe.
Electricity network requirements
The IQ8P Microinverters work with single-phase or multi-phase grid connections. Measure AC line
voltages at the point of connection to confirm that it is within the ranges shown:
Single-phase service Multi-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
Conductor lengths and voltage rise
When planning the 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% for the sections from the microinverter AC branch circuit to the circuit breaker
in the electrical panel.
Best practice: Center-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 center-feed a branch, divide the circuit into two sub-branch circuits protected
by a single OCPD.
Lightning and surge suppression
Enphase microinverters have integral surge protection, greater than most conventional 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.
NOTE: Protection against lightning and resulting voltage surge must be by local
electrical codes and standards.
Labelling
A label on the distribution board of the premises where the embedded generator is connected, as
shown in the below figure, or a similar warning. Disconnection points for all supplies must be
indicated.
The label shall be permanent with lettering of a height of at least 8 mm.
The label shall comply with the requirements of SABS 1186-1.
Example of labelling (more isolation points to be added as required)

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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 Operations Manual.
• Enphase Installer App: Download the Enphase Installer App, open it,
and log in to your Enphase account. Use it later to scan microinverter
serial numbers and connect to the IQ Gateway to track the system
installation progress. To download, go to https://enphase.com/en-
za/installers/apps or scan the QR code at right.
• IQ Relay: single-phase (Q-RELAY-1P-INT) or IQ Relay, multi-phase (Q-RELAY-3P-INT). For
the Italy region, use IQ Relay (Q-RELAY-2-3P-ITA) for both single-phase and multi-phase
applications.
NOTE: The multi-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 a multi-phase system for phase coupling if IQ Relay is not installed in the multi-phase
system.
• Tie wraps or cable clips (ET-CLIP-100 works with both single-phase and multi-phase IQ
Cable)
• IQ Sealing Cap (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 multi-phase): One
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; multi-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
Multi-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 multi-phase):
Length 300 meters. Raw cable with no connectors (optional).
Other items
• AC junction box
• Terminal screwdrivers
• Wire cutters, multimeter
• Torque wrench, sockets, and wrenches for mounting hardware
Android
iOS

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• Recommended RCD type and min system size
RCD Type B rated current Tripping current Min PV system size
Single-phase
16 A
0.03 A
6 A
20 A
0.03 A
6 A
25 A
0.03 A
6 A
Three-phase
25 A
0.03 A
6 A/phase
40 A
0.1 A
20 A/phase
63 A
0.3 A
60 A/phase
NOTE: Systems greater than 30 kVA require a pre-approved central disconnection
device.
Enphase microinverters installation
Installing the IQ8P 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 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 IQ Cable
Step 8: Complete the installation of the junction box
Step 9: Connect the PV modules
Step 10: Energize the system
Enphase IQ Microinverter
Tie wraps or cable clips
DC connector AC connector
Enphase IQ Cable
IQ Terminator
Horizontal mount

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Step 1: Position the IQ Cable
A. Plan each cable section to allow connectors on the IQ Cable to align with each PV 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 along the installed racking for the AC branch circuit.
D. Cut each section 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 put the connector at the microinverter under
tension.
Step 2: Position the junction box
A. Verify that the AC voltage at the site is within range.
Single-phase service
Multi-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*
*Nominal voltage range can be extended beyond nominal if required by the electricity network operator.
B. Install a junction box/AC isolator at a suitable location.
C. Provide an AC connection from the junction box/AC isolator back to the electricity network
using equipment and practices by local electrical codes and standards.
D. For multi-phase installations, verify the IQ Cable wiring colour codes are correctly
terminated: L1-Brown, L2-Black, L3-Grey, N-Blue.
>300 mm
Vertical mount

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WARNING: Blue conductor in IQ Cable should be used only for
neutral connection. Incorrect termination may irrecoverably
damage any connected microinverters.
Step 3: Mount the microinverters
A. The microinverters should be mounted beneath the modules either horizontal bracket side
up or vertical orientation to the module and must be protected from direct exposure to rain,
UV, and other harmful weather events. Refer to the image below for clearance requirements
during vertical mounting.
• Always place the microinverter under the PV module, protected from direct exposure to
rain, sun, and other harmful weather events. Allow a minimum of 19 mm (3/4") between
the roof and the microinverter. Also, allow 13 mm (1/2") between the back of the PV
module and the top of the microinverter.
• For vertical mount, also maintain at least 300 mm (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 mounting hardware: 5 N m
• 8 mm mounting hardware: 9 N m
• When using mounting hardware from a third-party manufacturer, use the
manufacturer’s recommended torque value.
L3
N
L2
L1
Horizontal mount

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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
array. Copy or use the Enphase installation map to record microinverter placement for the system or
provide your layout if you require a larger or more intricate installation map.
Each Enphase microinverter, IQ Gateway, and IQ 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 should also place the
IQ Gateway and IQ Battery serial numbers are 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 IQ Battery, (if installed) and affix it to the
installation map.
C. Always keep a copy of the installation map for your records.
>300 mm
Affix serial number labels
Vertical mount

IQ8P Microinverter Installation and Operation Manual
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Step 5: Manage the cabling
A. Use cable clips or tie wraps to attach the cable to the racking. The IQ Cable must be
supported at least every 300 mm.
Cable clip
B. Dress any excess cabling in loops so that it does not contact the roof. Do not form loops
smaller than 120 mm in diameter.
WARNING: Dress the excess IQ Cable to avoid the risk of cable insulation abrasion against
the roof surface.
Step 6: Connect the microinverters
A. Connect the IQ Cable to the microinverter. Listen for a click as the connectors engage.
B. Seal any unused connector on the IQ Cable with IQ Sealing Cap. Listen for a click as caps
engage.
WARNING: Risk of electric shock. Risk of fire. Install IQ 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 an IQ Sealing Cap, you must use the IQ Disconnect Tool.

IQ8P Microinverter Installation and Operation Manual
19 © 2023 Enphase Energy Inc. All rights reserved. September 2023
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Step 7: Terminate the unused end of the IQ Cable
Terminate the unused end of the Enphase IQ Cable as follows:
Single-phase IQ Cable Three-phase IQ Cable
A. Remove 13 mm of
the cable sheath
from the
conductors. Use
the IQ Terminator
body loop to
measure.
A. Remove 20 mm of the
cable sheath from the
conductors.
B. Slide the hex
nut onto the
cable.
B. Slide the hex nut onto the
cable.
C. Insert the cable into
the IQ Terminator
body so that the
two wires land on
opposite sides of
the internal
separator. The
grommet inside the IQ Terminator body
must remain in place.
C. Insert the cable into the IQ
Terminator body so that the
four wires land on separate
sides of the internal
separator. The grommet
inside the IQ Terminator
body must remain in place.
D. Insert a
screwdriver into
the slot on the top
of the IQ
Terminator to hold
it in place. Hold the
IQ Terminator body
stationary with the
screwdriver and
turn only the hex nut to prevent the
conductors from twisting out of the
separator. Torque the nut to 7 N m.
D. Bend the wires
down into the
recesses of the
IQ Terminator
body and trim as
needed. Place
the cap over the
IQ Terminator
body. Insert a
screwdriver into
the slot on the IQ
Terminator cap to hold it in place. Rotate the
hex nut with your hand or a wrench until the
latching mechanism meets the base. Do not
over-torque.
E. Attach the terminated cable end to the
PV racking with a cable clip or tie wrap so
that the cable and IQ Terminator are not
in contact with the roof surface.
E. Attach the terminated cable end to the PV
racking with a cable clip or tie wrap so that the
cable and IQ Terminator are not in contact with
the roof surface.
NOTE: Turn only the hex nut to prevent conductors from twisting out of the separator.
WARNING: The IQ Terminator cannot be re-used. If you unscrew the nut, you must discard
the IQ Terminator.

IQ8P Microinverter Installation and Operation Manual
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Step 8: Complete the installation of the junction box
A. Connect the IQ Cable to the junction box.
B. Refer to the Sample wiring diagram for more information. Conductor colours are listed
below:
Single-phase Multi-phase
Brown – L1
Blue – N
Brown – L1
Black – L2
Grey – L3
Blue – N
NOTE: The multi-phase IQ Cable internally rotates L1, L2, and L3 to provide balanced 400
VAC (multi-phase), thus alternating phases between microinverters.
NOTE: Minimize the number of unused IQ Cable connectors with multi-phase systems.
When cable connectors are left unused on a multi-phase system, it creates a phase
imbalance on the branch circuit. If multiple cable connectors are skipped over multiple
branch circuits, the imbalance will multiply.
Step 9: Connect the PV modules
WARNING: Electric shock hazard. The DC conductors of this photovoltaic system are not
earthed and will be energized when PV modules are exposed to sunlight.
A. Connect the DC leads of each PV
module to the DC input connectors of
the corresponding microinverter.
B. Check the LED on the connector side of
the microinverter. The LED flashes green
six times when DC power is applied.
C. Mount the PV modules above the
microinverters.
Step 10: Energize the system
A. Turn ON the AC disconnect or circuit breaker for the branch circuit.
B. Turn ON the main grid AC circuit breaker or isolator switch. Your system starts producing
power after a six-minute wait time.
C. Check the LED on the connector side of the microinverter:
LED color Indicates
Flashing
green
Normal operation. AC grid function is normal and there is
communication with the IQ Gateway. IQ8P Microinverter’s
LED will be flashing green only after provisioning.
DC connector
Status LED