N.Y.C. Admin. Code § 230.64: Section 230.64

Section 230.64 – Add a new Section 230.64 to Part V to read as follows:

230.64 Special Requirements. Where service equipment capacity is 1,000 kVA or larger, 230.64(A) through (F) shall apply.

Informational Note: See 110.2(B) to determine service equipment kVA capacity.

(A) Service rooms shall have a 2-hour fire rating and be constructed of non-combustible materials.

(B) Minimum working space in front of all service disconnecting means shall be 5 ft (1.52 m). When disconnecting means are located face-to-face, the minimum working space shall be 7 ft (2.13 m).

Exception: This requirement shall not apply to service disconnecting means rated 100 amperes or less.

(C) Minimum distance from the floor to uninsulated live parts within the equipment shall be 12 in. (300 mm).

(D) Service equipment requiring rear access shall have a minimum of 3 ft (914 mm) clearance on each side in addition to complying with 110.26(A) or 110.34(A) for rear working space.

(E) If the equipment does not require rear access and the distance from the rear of the equipment to the opposite wall is less than 3 ft (914 mm), then physical barriers shall be installed to prevent access behind the equipment.

Exception: Barriers shall not be required if the rear clearance is 12 in. (300 mm) or less.

(F) There shall be 2 means of egress from the required working space for electrical equipment. A means of egress shall be accessible from each end of the working space. A single means of egress from the working space shall be permitted where either of the conditions in 230.64(F)(1) or 230.64(F)(2) is met.

(1) Unobstructed Egress. Where the location permits a continuous and unobstructed way of egress travel, a single entrance to the working space shall be permitted.

(2) Extra Working Space. Where double the working space specified in Table 110.26(A)(1) or Table 110.34(A) is provided, a single means of egress shall be permitted. The single means of egress shall be located such that the distance from the equipment to the nearest edge of the egress doorway is not less than the minimum clear distance specified in Table 110.26(A)(1) or Table 110.34(A) for equipment operating at that voltage and in that condition. Working space in front of service disconnecting means shall not be less than that required in 230.64(B).