Code Quiz: Hubs and Service Masts

NEC rules for installing a rigid metal conduit that serves as a service mast.

When installing a rigid metal conduit that serves as a service mast, the hub installed as part of this system shall be __________.

A. approved

B. galvanized

C. listed

D. identified for use with service-entrance equipment

Find the Answer

Answer: D

As noted in Sec. 230.28(A) of the 2014 NEC, “The service mast shall be of adequate strength or be supported by braces or guys to withstand safely the strain imposed b

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