Revision History - enphase IQ8 Commercial Series Quick Install Manual

General safety, continued
DANGER: Risk of electric shock. Always de-energize the
+
AC branch circuit before servicing. Never disconnect the
any AC or DC connectors under load.
DANGER: Risk of electric shock. Risk of fire. Only
+
use electrical system components approved for wet
locations.
DANGER: Risk of electric shock. Risk of fire. Only
+
qualified personnel should troubleshoot, install, or
replace Enphase Microinverters or the QD Cable and
Accessories.
DANGER: Risk of electric shock. Risk of fire. Ensure that all
+
AC and DC wiring is correct and that none of the AC or DC
wires are pinched or damaged. Ensure that all AC junction
boxes are properly closed.
DANGER: Risk of electric shock. Risk of fire. Do not
+
exceed the maximum number of microinverters in
an AC branch circuit as listed in this guide. You must
protect each microinverter AC branch circuit with a 20 A
maximum breaker or fuse, as appropriate.
DANGER: Risk of electric shock. Risk of fire. Only quali-
+
fied personnel may connect the Enphase Microinverter
to the utility grid.
WARNING: Risk of equipment damage. Enphase male
*
and female connectors must only be mated with the
identical type and brand of male/female connector. IQ8
Commercial microinverter has Enphase EN4 bulkhead for
DC connection and bulkhead adapter cable for EN4 to MC4
connection.
WARNING: Before installing or using the Enphase micro-
*
inverter, read all instructions and cautionary markings in
the technical description, on the Enphase Microinverter
System, and on the photovoltaic (PV) equipment.
WARNING: Do not connect Enphase microinverters to
*
the grid or energize the AC circuit(s) until you have com-
pleted all of the installation procedures and have received
prior approval from the electrical utility company.
WARNING: PV rapid shutdown must be installed and
*
operational including activation device and required
markings. See complete details in installation manual.
WARNING: To enable installed system to comply as a
*
Photovoltaic Hazard Control System (PVHCS) installers
shall at a minimum perform the tasks mentioned in
Appendix Section "Photovoltaic Hazard Control System"
in "Commercial PV Design Guide IQ8 Commercial
microinverter System" at
DANGER: Risk of electric shock. Always de-energize the
+
AC branch circuit before servicing. Never disconnect the
DC connectors under load.
WARNING: When the PV array is exposed to light, DC
*
voltage is supplied to the PCE.
✓
NOTE: To ensure optimal reliability and to meet warranty
requirements, install the Enphase microinverters and QD
Cable according to the instructions in this guide.
✓
NOTE: Provide support for the QD Cable at least every
1.8 m (6 feet).
✓
NOTE: Perform all electrical installations in accordance
with all applicable local electrical codes, such as the
Canadian Electrical Code, Part 1 and NFPA 70 (NEC).
✓
NOTE: Protection against lightning and resulting voltage
surge must be in accordance with local standards.

Revision history

R E V I S I O N D AT E
140-00281-03 October 2023
Enphase Support: enphase.com/contact/support
5
Microinverter safety
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+
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;
enphase.com/support
✓
D E S C R I P T I O N
Editorial updates
Previous releases
DANGER: Risk of electric shock. Risk of fire. Do not
attempt to repair the Enphase microinverter; it contains
no user-serviceable parts. If it fails, contact Enphase
customer service to obtain an RMA (return merchandise
authorization) number and start the replacement
process. Tampering with or opening the Enphase
Microinverter will void the warranty.
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.
WARNING: You must match the DC operating voltage
range of the PV module with the allowable input voltage
range of the Enphase microinverter.
WARNING: The maximum open circuit voltage of the PV
module must not exceed the specified maximum input
DC voltage of the Enphase microinverter.
WARNING: The maximum DC input voltage that is
allowed to each inverter under any circumstance is 119
V DC.
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 QD Cable connection,
PV module, or the microinverter) to rain or condensation
before mating the connectors.
WARNING: Risk of equipment damage. The Enphase mi-
croinverter 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, and
non-Enphase batteries, etc. These devices do not behave
like standard PV modules, so operation and compliance
is not guaranteed. These devices may also damage the
Enphase microinverter by exceeding its electrical rating,
making the system potentially unsafe.
WARNING: Risk of skin burn. The chassis of the Enphase
Microinverter is the heat sink. Under normal operating
conditions, the temperature could be 20°C above
ambient, but under extreme conditions the microinverter
can reach a temperature of 90°C. To reduce risk of burns,
use caution when working with microinverters.
NOTE: The Enphase microinverter has field-adjustable
voltage and frequency trip points that may need to be set,
depending upon local requirements. Only an authorized
installer with the permission and following requirements of
the local electrical authorities should make adjustments.
QD Cable safety
DANGER: Risk of electric shock. Do not install the QD
+
Cable terminator while power is connected.
DANGER: Risk of electric shock. Risk of fire. When
+
stripping the sheath from the QD Cable, make sure the
conductors are not damaged. If the exposed wires are
damaged, the system may not function properly.
DANGER: Risk of electric shock. Risk of fire. Do not
+
leave AC connectors on the QD Cable uncovered for an
extended period. You must cover any unused connector
with a sealing cap.
DANGER: Risk of electric shock. Risk of fire. Make sure
+
protective sealing caps have been installed on all unused
AC connectors. Unused AC connectors are live when the
system is energized.
WARNING: Use the terminator only once. If you open the
*
terminator following installation, the latching mechanism
is destroyed. Do not reuse the terminator. If the latching
mechanism is defective, do not use the terminator. Do not
circumvent or manipulate the latching mechanism.
WARNING: When installing the QD Cable, secure any
*
loose cable to minimize tripping hazard.
✓
NOTE: When looping the QD Cable, do not form loops
smaller than 12 cm (4.75") in diameter.
✓
NOTE: If you need to remove a sealing cap, you must
use the Enphase disconnect tool.
✓
NOTE: When installing the QD Cable and accessories,
adhere to the following:
• Do not expose the terminator or cable connections to
directed, pressurized liquid (water jets, etc.).
• Do not expose the terminator or cable connections to
continuous immersion.
• Do not expose the terminator or cable connections
to continuous tension (e.g., tension due to pulling or
bending the cable near the connection).
• Use only the connectors and cables provided.
• Do not allow contamination or debris in the connectors.
• Use the terminator and cable connections only when all
parts are present and intact.
• Do not install or use in potentially explosive
environments.
• Do not allow the terminator to come into contact with
open flame.
• Fit the terminator using only the prescribed tools and in
the prescribed manner.
• Use the terminator to seal the conductor end of the QD
Cable; no other method is allowed.
Enphase DC Cable safety
✓
NOTE: Ensure proper routing of PV module DC cable
using the clips to prevent the leads from resting on the
roof. Do not wrap extra DC Cable around microinverter.
✓
NOTE: Avoid direct exposure to sunlight.
✓
NOTE: Avoid sharp edges on racking.
✓
NOTE: Avoid cable touching rough surfaces or moving
parts within racking system.
✓
NOTE: Avoid overly tight bending radii. Minimum bend
radii for the DC Cable is 8xOD or R55mm.
✓
NOTE: Avoid overly tight sized cable clips for routing.
© 2023 Enphase Energy. All rights reserved. Enphase,
the e and CC logos, IQ, and certain other marks listed at
https://enphase.com/trademark-usage-guidelines
marks of Enphase Energy, Inc. in the US and other
countries. Data subject to change. Rev03/2023-10-31.
are trade-