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Relevant FBC and NEC codes
and standards (UL)
• 680.23(F)(2) Equipment Grounding.
 Through-wall lighting assemblies, wet-
niche, dry-niche, or no-niche luminaires
shall be connected to an insulated copper
equipment grounding conductor installed
with the circuit conductors. The equipment
grounding conductor shall be installed
without joint or splice except as permitted
in (F)(2)(a) and (F)(2)(b). The equipment
grounding conductor shall be sized in
accordance with Table 250.122 but shall
not be smaller than 12 AWG.