On June 28, New York City Mayor Michael R. Bloomberg signed Introductory Number 64-A (Intro 64-A) into law. It updates the current NYC Electrical Code by adopting the 2008 National Electrical Code® (NEC) with local amendments.
The Electrical Code Revisions Committee voted to approve Intro 64-A on June 14, but not before making several technical and administrative amendments to the current NYC Electrical Code (2005 NEC with amendments). It became effective on July 1, with a transition period from July 1 through December 31.
The four technical amendments include the deletion of the requirement that optical fiber cables, communication wires, and cables mounted on the exterior surfaces of a building be installed in threaded metal raceways. Also, the title of section 820.154(A) was changed from “Plenums” to “Spaces Used for Environmental Air.”
The new electrical technical standards incorporate many of the existing amendments, but will also delete some longstanding ones, such as special construction requirements for luminaires and the amendments limiting underwater luminaires to 15 volts.
Other amendments regarding selective coordination were made to section 240.12 and section 700.27, which requires emergency system overcurrent devices to be selectively coordinated in the overcurrent range with all supply side overcurrent protective devices.
Other amendments include:
a revision to the definition of “Coordination (Selective)”
a new subsection (H) to 110.26 requiring all network compartments to have at least two means of egress that lead to areas that lead to a legal exit
several amendments regarding the existing requirement relative to voltage drop
new amendments to the requirements for MC cable with an outer jacket of PVC
prohibiting the installation of cable in nonresidential buildings, unless concealed within non-plenum walls, floors, and ceilings where walls, floors, and ceilings provide a thermal barrier that has at least a one-hour rated assembly
the use of liquidtight flexible nonmetallic conduit is prohibited in agricultural buildings
approval for all wiring within mobile and manufactured homes, including branch circuit wiring, are subject to installation and permitting requirements of NYC Electrical Code (550.3)
new requirements for sidewalk shed lighting installations, such as ground-fault circuit interrupters (GFCIs), and minimum wire size added to Article 590
requiring GFCI protection to be provided for receptacles in each elevator machine space or control space (620.23(C))
installation of fire alarm systems under Article 760, which has been extensively modified to incorporate the previous requirements of the NYC Building Code
The complete text and legislative details are available at http://legistar.council.nyc.gov/LegislationDetail.aspx?ID=652691&GUID=68F282D0-BCB0-4A31-852E-D01BE5218E93&Options=&Search=
Jack Lyons, Field Representative | Jack.Lyons@nema.org.