Section 110.34. Work Space and Guarding

(A) - (E) {As in NEC}

(F) Protection of Service Equipment.

Pipes or ducts foreign to the electrical installation may not be located in the spaces dedicated to the electrical equipment as described in § 110.26(E)(1)(a) and § 110.34(A) of this Code. Piping and other facilities are not considered foreign if they are provided for fire protection of the electrical installation.