Article 382 Nonmetallic Extensions
Concealable Nonmetallic Extension. A listed assembly of two, three, or four insulated circuit conductors within a nonmetallic jacket, an extruded thermoplastic covering, or a sealed nonmetallic covering. The classification includes surface extensions intended for mounting directly on the surface of walls or ceilings and concealed with paint, texture, joint compound, plaster, wallpaper, tile, wall paneling, or other similar materials.
Nonmetallic Extension. An assembly of two insulated conductors within a nonmetallic jacket or an extruded thermoplastic covering. The classification includes surface extensions intended for mounting directly on the surface of walls or ceilings.
Informational Note No. 1: See 310.14(A)(3) for temperature limitation of conductors.
Informational Note No. 2: See 362.10 for definition of First Floor.
- In unfinished basements, attics, or roof spaces
- Where the voltage between conductors exceeds 150 volts for nonmetallic surface extensions and 300 volts for aerial cable
- Where subject to corrosive vapors
- Where run through a floor or partition, or outside the room in which it originates