AC Module System Installation Manual
Rev. 1.0
There is a sample for grounding method as described below.
Using alternative equipment grounding devices.
•
Determine the size of an external ground wire according to Article 690.45, NEC2014.
•
All dead metal parts should be grounded through the connection of the PV module frame.
•
Alternative Equipment Grounding Devices are classified on a table at
Appendix 3 - Alternative Equipment
Grounding Devices.
•
Those methods and devices are not tested by UL.
•
These alternative grounding devices indicated on the appendix has been evaluated and approved by LG, not by UL.
•
Please follow installation manual for the grounding devices provided by its manufacturer.
•
These alternative grounding devices indicated on the appendix has been evaluated and approved by LG, not by UL.
•
Please refer to
Appendix 3 - Alternative Equipment Grounding Devices
for alternative equipment
grounding devices.
Samples for grounding
36
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All Rights Reserved.
AC junction box
grounding
wire
Alternative Equipment Grounding Devices
※ The NEC section 690.43 states that "Exposed non-current carrying metal parts of module frames,
equipment, and conductor enclosures shall be grounded in accordance with 250.134 or 250.136(A)
regardless of voltage."
※ The devices are intended for single use only. Functionality will not be guaranteed if reused.