An electrical service entrance grounding riser diagram details the connection requirements per utility standards and the National Electrical Code. The secondary service consists of one four-inch conduit routed per utility standards. A number one-zero copper ground conductor connects to the system per National Electrical Code Article 250. A thirty-foot length of number one-zero copper concrete-encased ground electrode is installed in the foundation. Additional connections bond to the building structural steel and cold water pipe.
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