enphase IQ8 Commercial Series Quick Install Manual

Q U I C K I N S T A L L G U I D E
Install IQ8 Commercial Series Microinverters
To install the IQ8 Commercial Series Microinverters, read and follow all warnings and instructions in this guide and the IQ8 Commercial Microinverter grid-tied
PV System Design Guide at: https://enphase.com/installers/resources/documentation. Each IQ8 Commercial Series Microinverter connects to a single PV
module in your array and is a small commercial solution for grid-tied, three-phase, 208 V PV applications. Safety warnings are listed on the back page of this
guide.
The IQ8 Commercial Series Microinverters do not require grounding electrode conductors (GEC) and equipment grounding conductors (EGC). The IQ8
Commercial Series Microinverters have 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'.
IMPORTANT: The IQ8 Commercial Series Microinverters include AC and DC connectors integrated into the microinverter bulkhead. The AC port of
the IQ8 Commercial Series Microinverter connects to a QD Cable. IQ8 Commercial Series Microinverter bulkhead and adapter cable male/female DC
connectors must only be mated with the identical type and manufacturer brand of male/female connector. IQ8 Commercial Series Microinverter has an
Enphase EN4 bulkhead that allows for direct connection to PV modules with TE PV4S SOLARLOK connectors. The EN4 to MC4 bulkhead adapter cable
allows for connection to PV modules with Stäubli MC4 connectors. The UL has evaluated the EN4 Bulkhead for intermatability with TE PV4S SOLARLOK
connectors. The UL has evaluated the adapter cable MC4 connector for intermatability with Stäubli MC4 connectors, whose cable coupler models are
"PV-KST4/...-UR, PV-KBT4/...-UR, PV-KBT4-EVO2/...-UR, and PV-KST4-EVO2/...-UR".
Note: 1) After you log in to your Enphase Installer Platform account from the Enphase Installer App, scan the microinverter serial numbers (1D bar code) and
connect to the IQ Gateway Commercial 2 to track the system installation progress.
2) The installer 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.
PREPARATION
A ) Log in to your Enphase Installer App account. Ensure you
are using the latest version of the Enphase Installer App
3.27.1 and above. With this app, you can scan micro-
inverter serial numbers and connect to the IQ Gateway
Commercial 2 to track system installation progress. To
download, go to https://enphase.com/installers/apps
scan the QR code at right.
B ) Refer to the following table and check PV module electrical compati-
bility at: enphase.com/en-us/support/module-compatibility.
Model DC connector
IQ8H-3P-72-E-US EN4 Locking
IQ8P-3P-72-E-US (TE PV4S-SOLARLOK)
C ) In addition to the microinverters, PV modules, and racking, you will
need the following Enphase items:
•
IQ Gateway Commercial 2 (model ENV2-I C2-AM3-3P): Required to monitor solar
production.
• Enphase Mobile Connect (model CELLMODEM-M1-06-SP-05 or CELLMODEM-
M1-06-AT-05) 4G-based LTE-M modem. Contact Enphase for data plan options.
• If your PV modules have TE PV4S SOLARLOK connectors, you may plug them
directly into the IQ8 Commercial Series Microinverter with EN4 bulkhead.
An Enphase bulkhead adapter (ECA-EN4-S22-12 (TE PV4S SOLARLOK) 150
mm/5.9" to Stäubli MC4 adapter cable pair) is provided by default with the IQ8
Commercial Series for PV modules with Stäubli MC4 connectors. Following are
the available Enphase DC adapter options:
DC adapter cable
EN4 (TE PV4S SOLARLOK) 150 mm/5.9" to
Stäubli MC4 (Default Supply)
EN4 (TE PV4S SOLARLOK) to 1000 mm
/39.4" non-terminated cable (pack of 12
pairs - optional)
EN4 (TE PV4S SOLARLOK) 1000 mm/39.4" to
Stäubli MC4 (Pack of 12 pairs - Optional)
WARNING: Do not reverse the adapter connections. When using adapter
cable, ensure that EN4 (TE PV4S SOLARLOK) connectors are used for
connection with microinverter. Refer to label on the adapter cables for
identifying EN4 microinverter connection.
•
Tie wraps or QD Cable clips (ET-CLIP-100)
• QD Sealing Caps (QD-SEAL-10): For any unused connectors on the QD Cable
• QD Terminator (QD-TERM-10): Typically one terminator (end-feeding branch
circuit) or two terminators (center-feeding branch circuit) are required per branch
circuit
• Field Wireable QD Connectors: Male QD-CONN-10M and Female
QD-CONN-10F
• QD Disconnect Tool (QD-DISC-10)
• Enphase Center tap adapter cable QD-LINKFW-10 (for all QD Cable SKUs)
1
(Model IQ8H-3P-72-E-US/IQ8P-3P-72-E-US)
or
PV module cell count
Pair with 54-cell/108 half-cell, 60-
cell/120 half-cell, 66-cell/132 half-cell,
and 72-cell/144 half-cell.
Part number Model SKU
860-00776 ECA-EN4-S22-12
860-01831 ECA-EN4-FW-10-12
860-00792 ECA-EN4-S22-10-12
• QD Cable (as listed in the following table):
Cable model Connector PV module
SKU spacing orientation
QD-12-13-120 1.7 m (5.6 ft) Portrait
QD-12-20-120 2.4 m (7.9 ft) Landscape
QD-12-25-108 2.9 m (9.5 ft) Landscape
D ) Field Wireable QD Connectors are pre-installed at the ends of the
QD Cables to increase the cable length beyond the connector limit
mentioned in the above table. The Field Wireable QD Connectors are
protected with sealing caps. The sealing caps must be removed only
when increasing cable length using the Field Wireable QD Connectors
at the cable end.
WARNING: Do not remove sealing caps from the cable end field wireable
connectors if they are not used to increase cable length.
E ) Check that you have these other items:
• AC junction box
• Tools: Screwdrivers, wire cutter, voltmeter, torque wrench, sockets, screwdriver
with blade width 3.2 mm (1/8") to 4 mm (1/6"), and wrenches for mounting
hardware
F ) Protect your system with lightning/surge suppression devices. It is also
important to have insurance that protects against lightning/electrical
surges.
G ) Plan your AC branch circuits to meet the following limits for a
maximum number of microinverters per three-phase branch, with each
branch protected by a three-pole 20 A over-current protection device
(OCPD).
Maximum microinverters per 20 A branch circuit
IQ8P-3P (three-phase 208 VAC)
12 microinverters
H ) Size the AC wire gauge to account for voltage rise. Select the correct
wire size based on the distance from the beginning of the QD Cable
to the breaker in the load center. Design for a voltage rise total of less
than 2% for these sections. Refer to the IQ8 Commercial Series Voltage
Rise Technical Brief at https://enphase.com/installers/resources/
documentation for more information.
Best practice: Center-feed the branch
circuit to minimize voltage rise in a
fully-populated branch.
EN4 to MC4
adapter cable
Max. spacing between Connectors
microinverters per box
1.3 m (4.3 ft) 120
2.0 m (6.6 ft) 120
2.5 m (8.2 ft) 108
IQ8H-3P (three-phase 208 VAC)
15 microinverters
terminator
QD Cable
IQ8 Commercial Microinverter
AC connector
DC connector