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Samples for grounding
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.
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All dead metal parts should be grounded through the connection of the PV module frame.
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Alternative Equipment Grounding Devices are classified on a table at Appendix 3 - Alternative Equipment
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Grounding Devices.
Those methods and devices are not tested by UL.
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These alternative grounding devices indicated on the appendix has been evaluated and approved by LG, not by UL.
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Please follow installation manual for the grounding devices provided by its manufacturer.
※ 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.
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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
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grounding devices.
Rev. 1.0
AC Module System Installation Manual
grounding
wire
Alternative Equipment Grounding Devices
AC junction box
36
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