14E-5-503 Class III locations.

The provisions of Article 503 of NFPA 70 are adopted by reference with the following modifications:

1.   Revise subsections 503.10 (A)(1) to (A)(3) to read:

"(1)   General. In Class III, Division 1 locations, the wiring method shall be in accordance with (1) through (4):

(1)   Rigid metal conduit, Type RTRC conduit, intermediate metal conduit, electrical metallic tubing, dust- tight wireways, or Type MI cable with listed termination fittings.

(2)   Type PLTC and Type PLTC-ER cable in accordance with the provisions of Article 725 including installation in cable tray systems. The cable shall be terminated with listed fittings.

(3)   Type ITC and Type ITC-ER cable as permitted in 727.4 and terminated with listed fittings.

(2)   Boxes and Fittings. All boxes and fittings shall be dust-tight.

(3)   Flexible Connections. Where necessary to employ flexible connections, one or more of the following shall be permitted:

(1)   Dust-tight flexible connectors

(2)   Liquidtight flexible metal conduit with listed fittings,

(3)   Interlocked armor Type MC cable having an overall jacket of suitable polymeric material and installed with listed dust-tight termination fittings

(4)   Flexible cord in compliance with 503.140

Informational Note: See 503.30(B) for grounding requirements where flexible conduit is used.

(5)   For elevator use, an identified elevator cable of Type EO, ETP, or ETT, shown under the "use" column in Table 400.4 for "hazardous (classified) locations" and terminated with listed dust-tight fittings."

2.   Revise subsection 503.10(B) to read:

"Class III, Division 2. In Class III, Division 2 locations, the wiring method shall comply with 503.10(A)."

14E-5-504 Intrinsically safe systems.

The provisions of Article 504 of NFPA 70 are adopted by reference without modification.

14E-5-505 Zone 0, 1, and 2 locations.

The provisions of Article 505 of NFPA 70 are adopted by reference without modification.

14E-5-506 Zone 20, 21, and 22 locations for combustible dusts or ignitable fibers/flyings,

The provisions of Article 506 of NFPA 70 are adopted by reference with the following modifications.

1.   Revise subsection 506.15(A) by deleting items (3) and (4).

2.   Revise subsection 506.15(C) item (3) to read:

"Type MI cable with listed termination fittings."

3.   Revise subsection 506.15(C) by deleting items (4), (5), and (6).

14E-5-510 Hazardous (classified) locations – Specific.

The provisions of Article 510 of NFPA 70 are adopted by reference without modification.

14E-5-511 Commercial garages, repair and storage.

The provisions of Article 511 of NFPA 70 are adopted by reference with the following modifications:

1.   Revise subsection 511.7(A)(1) to read:

"Fixed Wiring Above Class I Locations. All fixed wiring above Class I locations shall be in metal raceways, flexible metal conduit, liquidtight flexible metal conduit, or shall be Type MI, or PLTC cable in accordance with Article 725, or Type TC cable or Type ITC cable in accordance with Article 727."

(Amend Coun. J. 10-7-20, p. 21791, Art. III, § 5)

14E-5-513 Aircraft hangars.

The provisions of Article 513 of NFPA 70 are adopted by reference with the following modification:

1.   Revise subsection 513.7(A) to read:

"Fixed Wiring. All fixed wiring in a hangar but not installed in a Class I location as classified in 513.3 shall be installed in metal raceways or shall be Type MI cable."

14E-5-514 Motor fuel dispensing facilities.

The provisions of Article 514 of NFPA 70 are adopted by reference without modification.

(Amend Coun. J. 10-7-20, p. 21791, Art. III, § 6)

14E-5-515 Bulk storage plants.

The provisions of Article 515 of NFPA 70 are adopted by reference with the following modifications:

1.   Revise subsection 515.7(A) to read:

"Fixed Wiring. All fixed wiring above Class I locations shall be in metal raceways, or Type MI, Type TC, or Type PLTC and Type PLTC-ER cable in accordance with the provisions of Article 725, or Type ITC and Type ITC-ER cable as permitted in 727.4. The cable shall be terminated with listed fittings."

2.   [Reserved.]

3.   Delete subsection 515.8(C).

(Amend Coun. J. 10-7-20, p. 21791, Art. III, § 7)