How to Install an Enphase IQ Microinverter on a Rooftop

(music) This video will walk you through the rooftop
installation of the Enphase IQ microinverters. There are three primary steps involved
in installing and commissioning an Enphase system. The first is the rooftop installation, the second is wiring
the AC Combiner plus or standalone Envoy and the third is commissioning
the system in Installer Toolkit. In this video we will focus on the rooftop installation. For the purpose of this video,
we will be using the Enphase IQ7+ microinverter the Q cable and terminator caps. Your designs may call for additional
Enphase accessories, including terminator caps, sealing caps,
Q raw cable and field-wireable connectors. Now let's walk through the steps
to install an Enphase IQ system. Measure the modules and mark
the approximate centers of each PV module on the PV racking to prepare for
microinverter installation. If the Enphase DC adapter cables
are not already attached, attach them to the DC input port
of the microinverters now.

Verify that the DC adapter cables
are fully seated and locked. Listen for the click to verify. Mount the microinverters where you marked the rails,
with the bracket side facing the sky. When installing the microinverters,
you should be mindful of obstructions, such as the PV module frame, module junction box
or circuit junction boxes. Install the junction box in a suitable location
on the racking, in reach of your Q cable. Rough-in the cable so that
it aligns with the inverter position. Route the Q cable into the junction box
using UF type cable glands and complete all down run AC connections. Connect the AC connector
of the Q cable to the microinverter. Listen for the click as the connectors engage. Ensure that you have ample bend radius
and do not kink the cable. Attach the Q cable to the rack
using the recommended clips. Use a clip to hold the Q cable
before jumping between rails.

Terminate every open end of the Q cable
with a Q terminator. Let's start by getting familiar with the terminator parts
that you will need for assembly. This is the terminator body. This is the grommet that fits inside the terminator body. And this is the hex nut. Now let's assemble.
Using the terminator loop to measure, remove 13 millimeters, or 1/2 inch,
of the cable sheath from the conductors. Slide the hex nut onto the cable. Insert the cable into the terminator body
so that each of the two wires land on opposite sides of the internal separator.

The grommet inside the terminator body
should remain in place. Verify that the opening of the grommet
is aligned with the flat of the cable so that when inserting the wires,
they are split by the internal separator. Make sure that the hex nut is fully tightened. Hold the terminator body stationary with a screwdriver
and turn only the hex nut to prevent the conductors
from twisting out of the separator. Be sure to only tighten the hex nut. Rotating the terminator body could cause the conductors to back out past the internal separator. Warning, never unscrew the hex nut.
Unscrewing the hex nut destroys the locking feature and you must replace the Terminator. Manage the terminator cable end to the pv racking
with a cable clip or tie wrap so that the cable and the terminator
do not touch the roof.

Here is a brief demonstration of the process
in action on an actual installation. Peel the removable serial number label
from each microinverter and affix it to its respective location
on the paper copy of the installation map. Mount the PV modules above the micro inverters. Connect the DC leads of each PV module to the DC input
connectors of their corresponding microinverter. Listen for the clicks
to ensure they are connected. Turn on the AC disconnect
or circuit breaker for the branch circuit. Turn on the main utility grid AC circuit breaker. Your system will start producing power
after a five-minute wait time. The status LED on the side of each IQ microinverter will blink green six times to indicate normal operations
after DC power is applied. You've now completed the rooftop installation
of the Enphase IQ microinverters.

To learn more about how to install
and commission an Enphase system, visit enphase-dot-com-
slash-getting-started for details..

You May Also Like