Underground service entrance conductors shall be installed in accordance with applicable requirements of the 2014 NEC, covering the type of wiring method used, and shall be limited to which of the following methods:
A. Types RMC, IMC, NUCC, HDPE, PVC, RTRC conduits
B. Type IGS cable; Type USE conductors or cables
C. Type MV or MC cable identified for direct burial applications; Type MI cable, where suitably protected against physical damage and corrosive conditions
D. All of the above
Find the Answer
Answer: D
A new Sec. 230(B) in the 2014 Edition of the NEC outlines the acceptable wiring methods for underground service conductors. All 10 of the wiring methods shown above are noted as being an acceptable method.
Owen is the owner and president of National Code Seminars and the holder of master electrician certifications in 46 states. He can be reached at [email protected].