In addition to the requirements of §§ 77.503 and 77.506 , all wiring and electrical equipment installed after June 30, 1971, shall meet the requirements of the National Electric Code in effect at the time of installation.
30 C.F.R. §77.516
In addition to the requirements of §§ 77.503 and 77.506 , all wiring and electrical equipment installed after June 30, 1971, shall meet the requirements of the National Electric Code in effect at the time of installation.
30 C.F.R. §77.516