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.
• The solar modules are in Application Class A and
have the Safety Class II. Therefore they can be
operated in systems with 120 V DC and higher.
General access is not restricted.
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
• Front loads : 6000 Pascal
• Rear loads : 5400 Pascal
Excluded Operating Environments
• The solar modules from LG Electronics can be
operated in a location where they could come in
contact with salt water or ammonia, if they have
been tested successfully for these operating
conditions. Please see related certificates. Please
get a release from LG Electronics for increased
conditions.
Mounting Methods
General Information
• Select the appropriate orientation to maximize
sunlight exposure.
• In order to prevent water from entering the junction
box, which could present a safety hazard, module
should not be mounted such that the front/top
glass faces downward.
• Clearance between the solar module frames and
structures such as roofs or ground is required to
prevent wiring damage and to allow air to circulate
behind the solar module. The recommended
standoff height is a minimum of 100mm.
• When installed on a roof, the solar module must be
mounted over a fire-resistant roof covering rated
for the application. The fire resistance of the solar
module from LG Electronics is class C after
ANSI/UL790.
• The solar module is only IEC listed for use when its
factory frame is fully intact.
• Do not remove or alter the solar module frame.
• Creating additional mounting holes may damage
the solar module and reduce the strength of the
frame.
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.
• We recommend a size not smaller than 4mm
2
.
Earth Grounding
• The solar modules from LG Electronics meet the
conditions of safety class II. Therefore grounding is
not mandatory. However grounding is
recommended. Also equipotential bonding must be
realized. The national directives must be
respected.
• 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 solar module.
• There is an earth hole in the center of the module
frame. Using this hole, an earth conductor and the
solar module frame may be recommended to
connected and earthed as the below drawing.
• To prevent electric shock and fire, a protective
ground must be done on the frames of solar
modules and arrays although the solar modules
from LG Electronics meet the conditions of safety
class II. The national directives must be respected.
Module
frame
Bolt
Flat washer
Star washer
Cup washer
Flat washer
Spring washer
Nut
Grounding
wire
Summary of Contents for LG280N1C-G4
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