6
Mechanical Installation
Module Mounting
• The LG Electronics’ (LGE) Limited Warranty for
solar modules is contingent upon modules being
mounted in accordance with the requirements
described in this section.
• Any module without a frame (laminate) shall not be
considered to comply with the requirements of UL
1703 unless the module with hardware that has
been tested and evaluated with the module under
this standard or by a field inspection certifying that
the installed module complies with the requirements
of UL 1703.
Site Consideration
LGE solar modules should be mounted in a location
that meets the following requirements.
Operating Temperature
• Maximum Operating Temperature: +90°C (194°F)
• Minimum Operating Temperature: -40°C (-40°F)
Design Strength
• LGE solar modules are certified to basic loads
50lb/ft2 (about 2400 Pa).
Excluded Operating Environments
• The solar modules from LG Electronics can not be
operated in a location where they could come in
direct contact with salt water or ammonia.
Electrical Installation
General Wiring
• LG Electronics recommends that all wiring be double
insulated with a minimum rating of 90°C (194°F).
• All wiring should use a flexible copper (Cu) conductor.
• The minimum size should be determined by the
applicable codes.
• LG Electronics recommends a size no smaller than
12AWG.
Earth Grounding
• All work must be conducted in conformance with all
Federal, State, and local codes and standards.
• Grounding works should be performed by an
authorized installer for the safety and maintenance of
the system in accordance with all national, state and
local electrical codes and regulations and standards.
• Specific information on the solar module
dimensions and location of grounding holes is
provided in “Product Specifications”.
• One M4 stainless steel bolt, one nut, one spring
washer two flat washers one cup washer one star
washer and 12 AWG Cu wires are recommended
per mounting hole.
• Where common grounding hardware (nut, bolts,
washers) is used to attach a listed grounding
device, the attachment must be made in
conformance with the grounding device
manufacturer’s instructions.
• There is an earth hole on the edge of the module
frame Using this hole an earth conductor and the
solar module frame may be recommended to be
connected and earthed as the below drawing.
• All screws and nuts shall be tightened to a torque
of 4~5 Nm.
• A module with exposed conductive parts is
considered to be in compliance with UL 1703 only
when is electrically grounded in accordance with
the instructions presented below and the
requirements of the National Electrical Code.
The installation instructions shall include:
1. Details for wiring shall comply the NEC Article
690.
2. Details for the grounding method of the frame of
arrays shall comply with the NEC Article 250.
3. CNL model instruction manuals shall also include
a statement that installation shall be in
accordance with CSA C22.1, Safety Standard for
Electrical Installations, Canadian Electrical Code,
Part 1.
Module frame
Bolt
Flat washer
Star washer
Cup washer
Flat washer
Spring washer
Nut
Grounding
wire
