enphase IQ8 Installation And Operation Manual
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enphase IQ8 Installation And Operation Manual

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INSTALLATION AND OPERATION MANUAL
Enphase IQ8, IQ8+, IQ8M, IQ8A,
and IQ8H Microinverters
© 2024 Enphase Energy Inc. All rights reserved.
January 2024
IOM-00068-1.0

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  • Page 1 INSTALLATION AND OPERATION MANUAL Enphase IQ8, IQ8+, IQ8M, IQ8A, and IQ8H Microinverters © 2024 Enphase Energy Inc. All rights reserved. January 2024 IOM-00068-1.0...

  • Page 2: Corporate Headquarters Contact Information

    User documentation is updated frequently; check the Enphase website for the latest information. https:/ /enphase.com/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...

  • Page 3: Table Of Contents

    Enphase IQ8, IQ8+, IQ8M, IQ8A, and IQ8H Microinverters Contents Corporate headquarters contact information ..................2 FCC compliance ............................2 Other information ........................... 2 Audience ..............................2 Important safety information ........................5 Read this first ............................5 Product labels............................5 Safety and advisory symbols ........................ 5 IQ8 Series Microinverters safety instruction ..................
  • Page 4 Enphase IQ8, IQ8+, IQ8M, IQ8A, and IQ8H Microinverters Step 10: Enphase Energy System configurations ................21 Troubleshooting ............................25 Status LED indications and error reporting ..................26 LED operation ............................... 26 DC Resistance Low – Power off condition ....................26 Other faults ..............................

  • Page 5: Important Safety Information

    This manual contains important instructions for use during the installation and maintenance of the IQ8 Series Microinverters. Important: Enphase IQ Series Microinverters require the IQ Cable. An IQ Gateway is required to monitor the performance of the IQ Microinverters and configure them to be compliant with certain Authority Having Jurisdictions (AHJs).

  • Page 6: Iq8 Series Microinverters Safety Instruction

    IQ Relay is rated for 20 A, whereas multi-phase IQ Relay is rated for 25 A. DANGER: Risk 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.
  • Page 7 DC voltage of the Enphase microinverter. Refer to the Enphase Compatibility Calculator to verify PV module electrical compatibility with the microinverter. Use IQ8 Series Microinverters only with compatible PV modules as per the Enphase Compatibility Calculator. Using an electrically incompatible PV module voids Enphase warranty.
  • Page 8 Enphase IQ8, IQ8+, IQ8M, IQ8A, and IQ8H Microinverters When installing the IQ Cable and accessories, adhere to the following: • Do not expose the terminator cap or cable connections to directed, pressurized liquid (water jets, and so on). • Do not expose the terminator or cable to continuous immersion.

  • Page 9: Pv Rapid Shutdown Equipment (Pvrse)

    Enphase IQ8, IQ8+, IQ8M, IQ8A, and IQ8H Microinverters PV rapid shutdown equipment (PVRSE) This product is UL Listed as PV rapid shutdown equipment and conforms with NEC-2014, NEC-2017, and NEC-2020 section 690.12 and C22.1-2018 Rule 64-218 rapid shutdown of PV...

  • Page 10: The Enphase Iq System

    The IQ Gateway is capable of monitoring up to 600 Enphase IQ Microinverters and up to 39 Enphase IQ Batteries. Microinverters should be continuously connected to the internet using an IQ Gateway.

  • Page 11: How The Enphase Iq Series Microinverters Work

    60°C (140°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.

  • Page 12: Planning For Microinverter Installation

    Enphase IQ8, IQ8+, IQ8M, IQ8A, and IQ8H Microinverters Planning for microinverter installation The IQ8 Microinverter is compatible with 60-cell PV modules, and the IQ8+, IQ8M, IQ8A, and IQ8H Microinverter support PV modules with 54, 60, 66, or 72-cell PV modules. All of them install quickly and easily.

  • Page 13: Utility Service Requirements

    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.

  • Page 14: Lightning And Surge Suppression

    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.

  • Page 15: Other Items

    • Wire cutters, voltmeter • Torque wrench, sockets, wrenches for mounting hardware Enphase microinverter installation Installing the Enphase IQ Series Microinverters involves several key steps. Each step listed here is detailed in the following pages. Step 1: Position the IQ Cable...

  • Page 16: Step 1: Position The Enphase Iq Cable

    Enphase IQ8, IQ8+, IQ8M, IQ8A, and IQ8H Microinverters Vertical mount Step 1: Position the IQ Cable A. Plan each cable segment to allow drop connectors on the IQ Cable to align with each PV module. Allow extra length for slack, cable turns, and any obstructions.

  • Page 17: Step 3: Mount The Microinverters

    When using UL 2703 mounting hardware, use the manufacturer’s recommended torque value. 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 Enphase installation map to record microinverter placement for the system, or provide your own layout if you require a larger or more intricate installation map.

  • Page 18: Step 5: Manage The Cabling

    Enphase IQ8, IQ8+, IQ8M, IQ8A, and IQ8H Microinverters After you have created the installation map, use the Enphase Installer App (mobile 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.

  • Page 19: Step 6: Connect The Microinverters

    Disconnect a Microinverter. Step 7: Terminate the unused end of the cable Terminate the unused end of the Enphase IQ Cable as follows. IQ Terminator body A. Remove 13 mm (½ inch) of the cable sheath from the conductors. 13 mm Use the terminator loop to measure 13 mm.

  • Page 20: Step 8: Complete The Installation Of The Junction Box

    Enphase IQ8, IQ8+, IQ8M, IQ8A, and IQ8H Microinverters Internal view D. 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. 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.

  • Page 21: Step 10: Enphase Energy System Configurations

    LED flashes six times when DC power is applied. D. Mount the PV modules above the microinverters. Step 10: Enphase Energy System configurations Following are common system configurations possible with Enphase Energy System using IQ8 PV (IQ8/IQ8+/IQ8M/IQ8A/IQ8H) microinverters. − PV solar grid-tied −...
  • Page 22 Enphase IQ8, IQ8+, IQ8M, IQ8A, and IQ8H Microinverters IQ Gateway is required for Enphase Energy Systems with IQ Series Microinverters. Note the IQ Gateway is included in an IQ Combiner. IQ Combiner Series consolidates interconnection equipment into a single enclosure and streamlines PV and storage installations by providing a consistent, pre-wired solution for residential applications.
  • Page 23 In the PV solar grid, agnostic configuration in the Enphase Energy System, IQ System Controller smart switch is installed on the line-side of the main load panels. This allows a properly sized Enphase Energy System to provide power to all loads in the main load panel in the event of a grid outage and PV solar presence.
  • Page 24 In the whole home (main load panel) backup configuration, the IQ System Controller is installed on the line side of the main load panels rated up to 200 A. This allows a properly sized Enphase Energy System to provide power to all loads in the main load panel in the event of a grid outage. In this configuration, the IQ System Controller can be configured with a main breaker to act as the service disconnecting means.

  • Page 25: Troubleshooting

    You can set the grid profile through the Enphase Installer Platform, 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 to be compliant with certain jurisdictions. For more information on setting or changing the grid profile.

  • Page 26: Status Led Indications And Error Reporting

    Method 1: Clear this error using the Enphase Installer Platform • Log in to the Enphase Installer Platform and access the system. • Click the Events tab. The next screen shows a current “DC Resistance Low - Power Off”...

  • Page 27: Other Faults

    WARNING: Risk of electric shock. Always de-energize the AC branch circuit before servicing. Never disconnect the DC connectors under load. WARNING: The Enphase microinverters are powered by DC power from the PV modules. Ensure you disconnect the DC connections, reconnect the DC power, and then watch for the solid green about six seconds after connection to DC power.

  • Page 28: Disconnect A Microinverter

    Specifications this manual. J. Swap DC leads with a known good, adjacent PV module. If, after checking the Enphase Installer Platform periodically (this may take up to 30 minutes), the problem moves to the adjacent module, this indicates that the PV module is not functioning correctly. If it stays in place, the problem is with the original microinverter.

  • Page 29: Install A Replacement Microinverter

    Enphase IQ8, IQ8+, IQ8M, IQ8A, and IQ8H Microinverters E. Disconnect the PV module DC wire connectors from the microinverter using the IQ Disconnect Tool. F. If present, loosen and/or remove any bonding hardware. G. Remove the microinverter from the PV racking.
  • Page 30 Microinverter communications LED Device scan button K. Log in to Enphase Installer Platform to use Enphase Installer Platform’s Array Builder to add the newly detected microinverter to the virtual array. L. Ship the old microinverter to Enphase using the supplied return shipping label.

  • Page 31: Replacement Parts And Cabling

    These parts are available from your Enphase distributor. Enphase IQ Cable planning and ordering The Enphase IQ Cable is a continuous length of 12 AWG, double insulated, outdoor-rated cable with integrated connectors for microinverters. These connectors are preinstalled along the IQ Cable at intervals to accommodate varying PV module widths.

  • Page 32: Enphase Iq Cable Accessories

    Technical data Technical considerations Be sure to apply the following when installing the Enphase IQ8 Series Microinverter system: 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.
  • Page 33 Enphase IQ8, IQ8+, IQ8M, IQ8A, and IQ8H Microinverters The temperature-adjusted electrical parameters (maximum power, voltage, and current) of the bifacial modules, considering the front-side electrical parameters (that is, 0% back-side gain), must be within the microinverter input parameters range. Refer to Step 3: Mount the microinverters for tips on vertical mounting of bifacial modules.

  • Page 34: Specifications

    Enphase IQ8, IQ8+, IQ8M, IQ8A, and IQ8H Microinverters Specifications See the specifications in the following tables: • IQ8-60-2-US Microinverters • IQ8PLUS-72-2-US Microinverters • IQ8M-72-2-US Microinverters • IQ8A-72-2-US Microinverters • IQ8H-240-72-2-US Microinverters • IQ8H-208-72-2-US Microinverters • IQ Cable IQ8-60-2-US Microinverter specifications...
  • Page 35 Enphase IQ8, IQ8+, IQ8M, IQ8A, and IQ8H Microinverters Enphase IQ8-60-2-US Microinverter parameters Topic Unit Typical Miscellaneous parameters Maximum 4 microinverters per 20 A (max) AC branch circuit 240 VAC (single-phase) CEC weighted efficiency 240 VAC (single-phase) Total harmonic distortion <5 °C...

  • Page 36: Iq8Plus-72-2-Us Microinverter Specifications

    Enphase IQ8, IQ8+, IQ8M, IQ8A, and IQ8H Microinverters IQ8PLUS-72-2-US Microinverter specifications Enphase IQ8PLUS-72-2-US Microinverter parameters Topic Unit Typical DC parameters Commonly used modules for pairing 235W–440 W Peak power tracking voltage Operating voltage range Maximum Input DC voltage Minimum/Maximum start voltage Max.
  • Page 37 Enphase IQ8, IQ8+, IQ8M, IQ8A, and IQ8H Microinverters Enphase IQ8PLUS-72-2-US Microinverter parameters Topic Unit Typical Miscellaneous parameters Maximum microinverters per 20A (max) AC branch circuit 240 VAC (single-phase) CEC weighted efficiency 240 VAC (single-phase) Total harmonic distortion <5 °C Ambient temperature range...

  • Page 38: Iq8M-72-2-Us Microinverter Specifications

    Enphase IQ8, IQ8+, IQ8M, IQ8A, and IQ8H Microinverters IQ8M-72-2-US Microinverter specifications Enphase IQ8M-72-2-US Microinverter parameters Topic Unit Typical DC parameters Commonly used modules for pairing 260 W–460 W Peak power tracking voltage Operating voltage range Maximum input DC voltage Minimum/Maximum start voltage Max.
  • Page 39 Enphase IQ8, IQ8+, IQ8M, IQ8A, and IQ8H Microinverters Enphase IQ8M-72-2-US Microinverter parameters Topic Unit Typical Miscellaneous parameters Maximum microinverters per 20A (max) AC branch circuit 240 VAC (single-phase) CEC weighted efficiency 240 VAC (single-phase) 97.5 Total harmonic distortion <5 °C...

  • Page 40: Iq8A-72-2-Us Microinverter Specifications

    Enphase IQ8, IQ8+, IQ8M, IQ8A, and IQ8H Microinverters IQ8A-72-2-US Microinverter specifications Enphase IQ8A-72-2-US Microinverter parameters Topic Unit Typical DC parameters Commonly used modules for pairing 295 W–500 W Peak power tracking voltage Operating voltage range Maximum input DC voltage Max. continuous input DC current Max.
  • Page 41 Enphase IQ8, IQ8+, IQ8M, IQ8A, and IQ8H Microinverters Enphase IQ8A-72-2-US Microinverter parameters Topic Unit Typical Miscellaneous parameters Maximum microinverters per 20A (max) AC branch circuit 240 VAC (single-phase) CEC weighted efficiency 240 VAC (single-phase) Total harmonic distortion <5 °C Ambient temperature range...

  • Page 42: Iq8H-240-72-2-Us Microinverter Specifications

    Enphase IQ8, IQ8+, IQ8M, IQ8A, and IQ8H Microinverters IQ8H-240-72-2-US Microinverter specifications Enphase IQ8H-240-72-2-US Microinverter parameters Topic Unit Typical DC Parameters Commonly used modules for pairing 320 W–540 W Peak power tracking voltage Operating voltage range Maximum input DC voltage Minimum/Maximum start voltage Max.
  • Page 43 Enphase IQ8, IQ8+, IQ8M, IQ8A, and IQ8H Microinverters Enphase IQ8H-240-72-2-US Microinverter parameters Topic Unit Typical Miscellaneous parameters Maximum microinverters per 20 A (max) AC branch circuit 240 VAC (single-phase) CEC weighted efficiency 240 VAC (single-phase) Total harmonic distortion <5 °C...

  • Page 44: Iq8H-208-72-2-Us Microinverter Specifications

    Enphase IQ8, IQ8+, IQ8M, IQ8A, and IQ8H Microinverters IQ8H-208-72-2-US Microinverter specifications Enphase IQ8H-208-72-2-US Microinverter parameters Topic Unit Typical DC Parameters Commonly used modules for pairing 295 W–500 W Peak power tracking voltage Operating voltage range Maximum input DC voltage Minimum/Maximum start voltage Max.
  • Page 45 Enphase IQ8, IQ8+, IQ8M, IQ8A, and IQ8H Microinverters Enphase IQ8H-208-72-2-US Microinverter parameters Topic Unit Typical Miscellaneous parameters Maximum microinverters per 20 A (max) AC branch circuit 208 VAC CEC weighted efficiency 208 VAC Total harmonic distortion <5 °C Ambient temperature range...

  • Page 46: Iq Cable Specifications

    Enphase connector ratings Enphase connectors on the cable assemblies in the following table have a maximum current of 20 A, a maximum OCPD of 20 A, and a maximum ambient temperature of -40° to 79° C (-40° to 174.2° F) and are rated for disconnection under load.

  • Page 47: Enphase Installation Map

    Enphase IQ8, IQ8+, IQ8M, IQ8A, and IQ8H Microinverters Enphase installation map © 2024 Enphase Energy Inc. All rights reserved. January 2024 IOM-00068-1.0...

  • Page 48: Sample Wiring Diagram

    Enphase IQ8, IQ8+, IQ8M, IQ8A, and IQ8H Microinverters Sample wiring diagram © 2024 Enphase Energy Inc. All rights reserved. January 2024 IOM-00068-1.0...

  • Page 49: Revision History

    Updated microinverter specifications. Previous release. © 2024 Enphase Energy. All rights reserved. Enphase, the e and CC logos, IQ, and certain other marks listed at https://enphase.com/trademark-usage-guidelines are trademarks of Enphase Energy, Inc. in the U.S. and other countries. Data subject to change.

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