(A) All work done by or under the supervision of any person licensed for the business of electrical wiring hereunder shall conform to the minimum standards of this chapter, as amended, provided that any commercial or industrial building proposed to be constructed shall meet the specifications required in the No. 1 Fire Zone; and further that No. 12 wire shall be used instead of No. 14 wire for all electrical work, except that No. 14 copper wire shall be permitted in fire alarm and lighting circuits, as specified in the National Electric Code, in one and two family dwelling structures.
(B) All work done by or under the supervision of any person licensed for the business of heating and ventilating or registered for plumbing shall conform to the minimum requirements of this chapter; provided that all new or replacement water feed lines to buildings shall have a minimum size of three-fourths of an inch inside diameter; and that all water service shall have a main shut-off valve.
(C) HEATING AND VENTILATING
shall be construed to include warm air heating and duct ventilating and air conditioning.
