Step 4 - Attach The Microinverters To The Mounting Rail - enphase M215 Installation And Operation Manual

Step 4 – Attach the Microinverters to the Mounting Rail
a. Mark the approximate centres of each PV module on the mounting rail.
b. Evaluate the location of the microinverter with respect to the PV module DC junction box or any
other obstructions.
Ensure that the microinverter does not interfere with the PV module frame or stiffening braces.
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Ensure that the connector from the microinverter can easily reach the connector on the Engage
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Cable.
c. Allow a minimum of 1.9 cm (0.75 inches) between the roof and the bottom of the microinverter.
Also allow 1.3 cm (0.50 inches) between the back of the PV module and the top of the
microinverter.
WARNING: Do not mount the microinverter in a location that allows long-term exposure to
direct sunlight (i.e., the microinverter should be covered by the PV module).
d. With the silver side of the microinverter
facing up and the black side facing down,
mount one microinverter at each location
using suitable hardware. The indicator light
on the underside of the microinverter will be
facing the roof.
NOTE: Installing the microinverter black
side up is not recommended as it may
allow moisture to collect between the
cover and the body of the
microinverter. If installing the M215 at
an angle, check that this angle does
not allow for collection of water in the
recesses of the microinverter.
e. Torque the microinverter fasteners to the
values below.
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NOTE: Using a power screwdriver to tighten the screws is not recommended due to the risk of
thread galling.
f. If you are using a bonding (earthing) electrode conductor to earth the microinverter chassis, attach
the earthing electrode conductor to the microinverter earthing screw.
g. Torque the 10/32 earthing cleat screw to 2 N m (20 in-lbs) minimum. Each Enphase Microinverter
comes with an earthing clip that can accommodate a 10-16mm
the mounting rail and PV module to this conductor using a crimp connection.
NOTE: The AC output neutral is not bonded to earth inside the microinverter.
12
6 mm (1/4") mounting hardware – 5 N m (45 in-lbs) minimum
8 mm (5/16") mounting hardware – 9 N m (80 in-lbs) minimum
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M215 Installation and Operation
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conductor. You may also earth
141-00021 Rev 01