enphase IQ8 Design Manual page 8

WARNING: Risk of
equipment
damage.
WARNING: Risk of
equipment
damage.
WARNING: Risk of
warranty void
NOTES:
NOTES:
QD Cable safety
DANGER: Risk of
electric shock.
WARNING: Risk of
electric shock. Risk
of fire.
WARNING:
NOTES:
8
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 the microinverter) to rain or condensation before the
connectors are mated.
The maximum open circuit voltage of the PV module must not exceed the specified
maximum input DC voltage of the Enphase microinverter. Refer to the Enphase
compatibility calculator to verify PV module electrical compatibility with microinverter.
Use IQ8 Commercial Series Microinverters only with compatible PV modules as per the
Enphase compatibility calculator. Using an electrically incompatible PV module voids
Enphase warranty.
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.
Do not attempt to open/repair the Enphase microinverter; it contains no user-
serviceable parts. If the microinverter 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.
The Enphase microinverter has field-adjustable voltage and frequency trip points that
may need to be set, depending upon local requirements. Only a competent authorized
installer with the permission and following requirements of the local electrical
authorities should make adjustments.
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.
Do not install the QD Terminator while the power is connected.
When stripping the sheath from the QD 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 QD Cable uncovered for an extended period. You
must cover any unused connector with an QD Sealing Cap.
Make sure protective QD Sealing Caps have been installed on all unused AC
connectors. Unused AC connectors are live when the system is energized.
Use the QD Terminator only once. If you open the QD Terminator following
installation, the latching mechanism is destroyed. If the latching mechanism is
defective, do not use the QD Terminator. Do not circumvent or manipulate the
latching mechanism.
When installing the QD Cable, secure any loose cable to avoid the risk of cable
insulation abrasion against the roof surface.
When looping the QD Cable, do not form loops smaller than 120 mm in diameter.
Provide support for the QD Cable every 300 mm.
If you need to remove QD Sealing Cap, you must use the QD Disconnect Tool.
© 2023 Enphase Energy Inc. All rights reserved.
IQ8 Commercial Microinverter grid-tied PV system
November 2023
USG-00026-1.0