I looked here: http://www.nyc.gov/html/dob/pdf/elamend.pdf
and it was close to the top of "page 5".
it says the following - verbatim:
(1) Circuit Wiring. All new or additional circuit wiring shall be installed in accordance with one of the following wiring methods in Chapter 3 of this Code: Type AC cable, Type MC cable, Type MI cable, metallic conduit or metallic wireway.
Also start from the bottom of page 4 where it says:
"210-52 Add new 210-52 (i) and (j) to read as follows:
Top of page 5:
(i) Outlet Requirements for Residential-Type Occupancies. In addition to the requirements set forth in subsections (a) through (h) of this section, living rooms, bedrooms and dining rooms shall have at least one receptacle outlet installed for air conditioners. Such outlets shall be supplied by an individual appliance branch circuit.
Exception: Buildings with central air conditioning systems that serve any of the above areas shall not require separate outlets in those areas.
(j) Oil Burners and Similar Equipment. Each oil burner, automatic stoker, or gas furnace shall be supplied by a dedicated branch circuit.
(1) Circuit Wiring. All new or additional circuit wiring shal be installed in accordance with one of the following wiring methods in Chapter 3 of this Code: Type AC cable, Type MC cable, Type MI cable, metallic conduit or metallic wireway.
I took this to mean that the New York City code always specified the use of metallic clad cables for permanent wiring -- since that's all I've seen in both new residential construction and also old residential work here in the City.
The old work I've seen has type BX (with the aluminium bonding wire and no earth conductor)
I've only seen NM used for festoon lighting and temporary hookups in construction sites.
Please keep in mind I don't have a copy of the Code and also I'm not an electrician, so I don't know the specifics. If I read this wrong, by all means please let me know.
I took it to mean that the use of metallic clad cables for in-wall wiring are still mandatory in the City.
[This message has been edited by SvenNYC (edited 02-19-2003).]