Continuity and resistance of grounding systems shall be tested immediately after installation, repair, and modification; and annually thereafter. A record of the resistance measured in each equipment ground conductor, grounding electrode conductor, and the earth around the grounding electrode shall be made, and the most recent test record shall be available upon request by the director or division mine inspector.
4 Va. Admin. Code § 25-40-2250
Statutory Authority
§§ 45.1-161.3, 45.1-161.294 and 45.1-161.305 of the Code of Virginia.