Electrical Room Fire Rating Nyc

Rated closet within the overall electric room to satisfy 2014 nyc ch.

Electrical room fire rating nyc.

Generator transformer rooms as per section bc 903 3 1 1 1 provided that a smoke detector connected to a fire alarms system is installed an alternative fire extinguishing system is provided and the space is within a 2 hour fire resistance rated enclosure. We are not doing any other emergency power work in the building besides adding fused disconnects at main service generator and fire alarm ats. We are planning on adding a dedicated fire alarm ats switch in its own 2 hr. Question regarding the rating for emergency feeders for generators the 2011 nyc electrical code book article 700 9 d 1 2 3 4 5 6 all state 1 hour rating for fire rated assembly.

The supporting construction for fire barrier walls shall be protected to afford the required fire resistance rating of the fire barrier supported except for 1 hour fire resistance rated incidental use area separations as required by table 508 2 in buildings of type iib iiib and vb construction. Resistance rating fire protection rating or flame spread rating or required to be noncombustible fire retardant treated or slow burning shall be tested under the applicable test procedures specified herein in accordance with the acceptance requirements of section 27 131 of article seven of subchapter one of this chapter. Any relocated mechanical equipment exterior wall roof intake exhaust louvers or added to new area s of building. The fire resistance rating of exterior walls with a fire separation distance of greater than 5 feet 1524 mm shall be rated for exposure to fire from the inside.