14E-3-320 Armored cable: Type AC.
The provisions of Article 320 of NFPA 70 are adopted by reference with the following modifications:
1.   Revise section 320.10 to read:
"Uses Permitted. Type AC cable shall be permitted to be installed as specified in 320.10(A) or (B).
(A)   Existing Installations. Except where otherwise specified in this Code and where not subject to physical damage, listed Type AC cable with listed fittings and not exceeding 7.62 m (25 ft) in length between junction boxes shall be permitted to be installed for branch circuits in concealed work fished into existing walls, partitions, floors, or hard surface ceilings where other work does not require or include removal of the existing finished surface.
(B)   Exposed Work. For exposed work only under the following conditions:
(1)   In lengths not more than 1.83 m (6 ft), at terminations where flexibility is necessary;
(2)   In lengths not more than 1.83 m (6 ft) in accessible, but not habitable, attics and roof spaces where installed in accordance with 320.12;
(3)   In lengths not greater than 1.83 m (6 ft), below the basement ceiling joists where it is necessary to connect a cabinet or junction box."
2.   Revise section 320.12 to read:
"Uses Not Permitted. Type AC cable shall not be used for any installation not permitted in 320.10."