cda said:
One story new wood construction apartment office, stand alone building and another one story insurance office wood construction Not an electrical person
But wiring does not have to be in conduit???
Section reference
Thanks
ARTICLE 334
Nonmetallic-Sheathed Cable: Types NM, NMC, and NMS
I. General
334.1 Scope. This article covers the use, installation, and construction specifications of nonmetallic-sheathed cable.
334.2 Definitions.
Nonmetallic-Sheathed Cable. A factory assembly of two or more insulated conductors enclosed within an overall nonmetallic jacket.
Type NM. Insulated conductors enclosed within an overall nonmetallic jacket.
Type NMC. Insulated conductors enclosed within an overall, corrosion resistant, nonmetallic jacket.
Type NMS. Insulated power or control conductors with signaling, data, and communications conductors within an overall nonmetallic jacket.
334.6 Listed. Type NM, Type NMC, and Type NMS cables shall be listed.
II. Installation
334.10 Uses Permitted. Type NM, Type NMC, and Type NMS cables shall be permitted to be used in the following:
One- and two-family dwellings and their attached or detached garages, and their storage buildings.
Multifamily dwellings permitted to be of Types III, IV, and V construction except as prohibited in 334.12.
Other structures permitted to be of Types III, IV, and V construction except as prohibited in 334.12. 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.
Informational Note No. 1: Types of building construction and occupancy classifications are defined in NFPA 220-2009, Standard on Types of Building Construction, or the applicable building code, or both.
Informational Note No. 2: See Informative Annex E for determination of building types [NFPA 220, Table 3-1].
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.
Types I and II construction where installed within raceways permitted to be installed in Types I and II construction.
(A) Type NM. Type NM cable shall be permitted as follows:
For both exposed and concealed work in normally dry locations except as prohibited in 334.10(3)
To be installed or fished in air voids in masonry block or tile walls
(B) Type NMC. Type NMC cable shall be permitted as follows:
For both exposed and concealed work in dry, moist, damp, or corrosive locations, except as prohibited by 334.10(3)
In outside and inside walls of masonry block or tile
In a shallow chase in masonry, concrete, or adobe protected against nails or screws by a steel plate at least 1.59 mm (1/16 in.) thick and covered with plaster, adobe, or similar finish
© Type NMS. Type NMS cable shall be permitted as follows:
For both exposed and concealed work in normally dry locations except as prohibited by 334.10(3)
To be installed or fished in air voids in masonry block or tile walls