NEW HAMPSHIRE 2020 NEC^® AMENDMENTS.

The Electricians' Licensing Board in conjunction with the State Electrical Inspectors, municipal electrical & building inspectors & other representatives of the electrical industry in the State of New Hampshire have put together this list of common licensing and installation concerns and problems encountered by the Board's office staff relative to the State's licensing law RSA 319-C and the administrative rules.

1. Amendment EL-20-13-21 The use of NM cable in other structures permitted to be Types III, IV or V construction is entered into Article 334 below.

Section 334.10, Uses Permitted. Type NM and Type NMC cables shall be permitted to be used in the following, except as prohibited in 334.12:

(1) One- and two-family dwellings and their attached or detached garages, and their storage buildings.

(2) Multi-family dwellings permitted to be of Types III, IV, and V construction.

(3) Other structures permitted to be of Types III, IV, and V construction. Except as permitted by 334.10(6), cables shall be concealed within walls, floors, or ceilings that provide a thermal barrier of material that has at least a 15-minute finish rating as identified in listings of fire-rated assemblies.

Exception to (2) and (3): For building or structures required to be of type I or II construction, type NM, type NMC and type NMS cables shall be permitted to be used, provided that where so applied in buildings or structures exceeding three stories above grade, circuits run in type NM, NMC and NMS shall not leave the floor or dwelling unit which the circuits originate.

(4) Cable trays in structures permitted to be Types III, IV, or V where the cables are identified for the use.

Informational Note: See 310.15(A)(3) for temperature limitation of conductors.

(5) Types I and II construction where installed within raceways permitted to be installed in Types I and II construction.

(6) Exposed within:

1. dropped and suspended ceiling cavities
2. accessible attics and spaces
3. unfinished basements and crawl spaces

Except as permitted by 334.30(B)(2) for connections to luminaires and equipment, cables shall be installed to closely follow the surface of framing members, running boards or the equivalent.

334.12 Uses Not Permitted.

(A) Type NM and NMC. Type NM and NMC cables shall not be permitted as follows:

(1) In any dwelling or structure not specifically permitted in sections 334.10(1), (2), (3), and (5)

(2) Exposed within a dropped or suspended ceiling cavity in other than one- and two-family and

multifamily dwellings.

(3)(2) As service-entrance cable

(4)(3) In commercial garages having hazardous (classified) locations as defined in section 511.3

(5)(4) In theaters and similar locations, except where permitted in section 518.4(B)

(6)(5) In motion picture studios

(7)(6) In storage battery rooms

(8)(7) In hoistways or on elevators or escalators

(9)(8) Embedded in poured cement, concrete, or aggregate

(10)(9) In hazardous (classified) locations, except where specifically permitted by other articles in this

Code.

Amend Section 334.30 as follows: Section 334.30(B)(2) is not more than 1.4m(4 1/2ft.) from the last point of connection to a luminaire or other piece of electrical equipment and the cable and point of connection are within an accessible ceiling’ (Removed text) in one, two , or multifamily dwellings.