Figure 23: Qd Cable Clip; Figure 24_2: Vertical Mount Of Iq8D Microinverter - enphase IQ8D-72-E-US Design Manual

Commercial pv design guide microinverter system

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Quick install manual (6 pages)

Table Of Contents

100

101

Table of Contents

Step 02: Manage the Cabling

A You must install supports (clips, etc.) for the QD Cable

and Raw QD Cable at 1.8 m (6 ft) intervals or less.

Installation requirements for wet-rated cable allow QD

Cable and Raw QD Cable to be installed in conduits,

cable trays, and other raceways.

C Dress any excess cabling in loops so that it does not

touch the roof. Do not form loops smaller than 12 cm

(4.7") in diameter.

Step 03: Mount the Microinverters

A Mount the Microinverter horizontally bracket side up

or vertically. Always place it under the PV module,

protected from direct exposure to rain, sun, and other

harmful weather events.

Allow a minimum of 1.9 cm (3/4") between the

roof and the Microinverter. Also allow 1.3 cm (1/2")

between the back of the PV module and the top of the

Microinverter.

C For the vertical mount with bifacial PV modules,

maintain > 30 cm (12") clearance from the edges of

the PV module to protect the Microinverter from direct

exposure to rain, UV, and other harmful weather events

Install the Microinverter under the PV module to avoid direct

exposure to rain, UV and other harmful weather events. Do not

mount the Microinverter upside down.

D Torque the mounting fasteners (1/4-inch or 5/16-inch)

as follows. Do not over torque.

•

6 mm (1/4") mounting hardware: 5 N m

(45 to 50 in-lbs.)

•

8 mm (5/16") mounting hardware: 9 N m (80 to 85

in-lbs.)

•

When using UL 2703 mounting hardware, use the

manufacturer's recommended torque value

Ensure Microinverters are oriented in the correct

direction with the correct side facing the solar PV

module (bracket side up).