Grounding connections comply with National Electrical Code requirements for the electrical service grounding electrode system. Cold water piping connects per NEC 250.52(A)(1). Sprinkler piping bonds to the grounding system per NEC 250.104(B). A twenty-foot length of copper conductor embeds in the concrete footing per NEC 250.52(A)(3) to serve as a concrete-encased electrode. Building structural steel ties into the grounding electrode system per NEC 250.52(A)(2).
COLD WATER PIPING PER NEC 250.52(A)(1) SPRINKLER PIPING PER NEC 250.104(B) BUILDING STEEL PER NEC 250.52(A)(2) 20' LENGTH COPPER CONDUCTOR IN FOOTING PER NEC 250.52(A)(3)
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