Data Sheet
Table Of Contents
- Planning for an IQ Microinverter System
- IQ 6 and IQ 6+ Micros
- IQ 7 and IQ 7+ Micros
- IQ 7X Micros
- Q Cable and IQ Micro Accessories
- IQ System Design using the IQ Combiner
- IQ System Design using the IQ Combiner+ and IQ Combiner 3
- IQ System Design with Q Aggregator
- IQ Envoy Installation Options
- Field Wireable Q Connectors and Raw Q Cable
- Splicing Q Cable and Raw Q Cable with Junction Boxes
- Example IQ Microinverter System Layouts and Bill of Materials (BOMs)
- Wire Management of AC and DC Cables Under Array
- AC Wire Management at the Junction Box or Q Aggregator
- Installing IQ Microinverters with Frame Mount Bracket
- Installing the Power Line Filter (Q-LCF-064-1P)
Planning for an IQ Microinverter System
© 2018 Enphase Energy Inc. All rights reserved. December 13, 2018
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IQ System Design using the IQ Combiner+ and IQ Combiner 3
The Enphase IQ Combiner+
TM
and IQ Combiner 3
TM
combine up to four AC branch circuits of an IQ System,
have integrated IQ Envoy and are UL listed. Using an IQ Combiner+ or IQ Combiner 3 makes the customer
“storage ready,” as it also allows connection of Enphase IQ Battery circuits. The IQ Combiner+ and IQ
Combiner 3 design allows for additional installation flexibility compared to the three circuit IQ Combiner, as it
now offers a fourth branch circuit for bigger systems and can accept 2-pole circuit breakers with higher
current rating for terminating the Q Aggregator output circuits.
IQ Combiner+ 19.4” x 18.3” x 6.3” IQ Combiner 3 19.5” x 14.75” x 6.63”
The IQ Combiner+ and IQ Combiner 3 use an integrated Eaton BR Series busbar assembly for landing
installer-provided Eaton BR Series circuit breakers for the IQ system branch circuits. Make sure to separately
source the Eaton BR circuit breakers with the correct amp rating for the specific system design. The IQ
Combiner+ and IQ Combiner 3 allow for any combination of up to four branch circuits of IQ Micros or IQ
Batteries to be terminated within the enclosure. The sum of the solar and/or storage branch circuit breakers
shall not exceed 80 A. Any combination of breaker amp ratings can be used providing more flexibility. See
example schematics below. The IQ Combiner+ and IQ Combiner 3 also include a pre-installed 10 A circuit
breaker for protecting and switching the pre-wired IQ Envoy.
It’s important that only Line 1 of each solar microinverter AC branch circuit passes through the Production
CT, in the lower corner of the enclosure, as the IQ Battery circuits should not be measured by the Production
CT for proper storage system function. You may run multiple Line 1 conductors for each solar microinverter
AC branch circuit through the production CT, keeping in mind to wire the AC branch circuit Line 1 conductors
with the arrow on the CT pointing from the microinverters to the interconnection point. The outdoor-rated
enclosure of the IQ Combiner+ and IQ Combiner 3 offers protection for the IQ Envoy, Mobile Connect cellular
(optional), and revenue-grade production metering.
When using the Q Aggregator for combining multiple branch circuits on the roof, the combined production
circuit can now be terminated on one of the 2-pole circuit breakers (provided by the installer) inside the IQ
Combiner+ or IQ Combiner 3. The amp rating of the 2-pole circuit breaker used for connection of the Q
Aggregator output circuit shall be no smaller than 1.25 times the sum of the continuous output current of all
the microinverters connected to that Q Aggregator, and cannot exceed 60A. It must also be suitable for
backfeed operation. Make sure the conductor size selected for field wire from Q Aggregator to the service
connection is adequate for the over current protective device (OCPD) chosen.