N.Y.C. Admin. Code § 368.119: Section 368.119

Section 368.119 – Add a new Section 368.119 to Part III to read as follows:

368.119 Service Busway. Service busway shall conform to the specifications in (A) through (I) below or be a listed busway suitable for services.

(A) Ampacity and Ratings of Busbars. Ampacity and ratings of busbars shall be in accordance with 230.42(A).

(B) Length. Service busway shall be limited to a maximum of 10 ft (3.0 m) in length, unless otherwise approved by special permission.

(C) Insulation. Busbars and busbar joints shall be insulated with a material listed for the purpose and rated for use at a minimum of 600 volts.

(D) Enclosure. Enclosure shall be fabricated from aluminum, minimum 1/8 in. (3.2 mm) thick, or other non-magnetic material approved by the commissioner.

(E) Enclosure Vents. Ventilating openings shall be permitted in the sides and bottom of the enclosure. The top of the enclosure must be solid.

(F) Mounting. Busbars shall be mounted on insulating supports, properly spaced and braced to withstand the maximum available short circuit current.

(G) Clearance. A minimum clearance of 4 in. (102 mm) shall be provided from the phase bars to the enclosure.

(H) Plating. All busbar joints and connections shall be plated with silver, tin or nickel.

(I) Accessibility. All busbar joints and connections shall be accessible.