NM CID ES-3 Practice Questions - New Mexico CID ES-3 Low Voltage Special Systems (Under 50 Volts) Examination Exam

A single 4-foot rod driven inside the electrical room At least 20 feet of 2 AWG bare copper in a continuous trench not less than 30 inches deep, with a minimum of two 8-foot ground rods, one at each end Ten feet of 6 AWG insulated copper laid on grade and stapled to the foundation No electrode is required if all branch circuits are GFCI-protected