Standard Codes. Each utility shall use the applicable provisions in the National Electrical Safety Code and the National Electrical Code, which have been incorporated by reference in COMAR 20.50.02.02, for the grounding of secondary circuits and equipment. Testing Grounds. Artificial grounds not connected to a multigrounded system shall be tested for ground resistance at the time of installation. Records of Tests. Records shall be kept of all ground resistance tests made in accordance with §B, above. Inspection of Grounds. The utility shall establish a program of inspection to insure that artificial grounds are in good mechanical and electrical condition.