Building Wire & Cable

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Building wire and cable carry electrical current from a power source to a device in a building, such as an outlet or light fixture. Building wire is typically run through conduit, cable trays, or raceways. Building cable consists of multiple strands of wire bundled inside a thermoplastic or metal sheath. Building wire and cable are typically used to run new circuits or extend old circuits inside walls and ceilings in commercial, industrial, and residential properties.

THHN Building Wire

Thermoplastic high-heat-resistant nylon (THHN) building wire is a coated wire typically run through conduit or cable trays. This general purpose wire is used to supply an electrical current in a range of indoor wiring projects, including control circuits and appliances. It has a durable nylon jacket that resists abrasion, protects against shock, and shields the thermoplastic insulation and metal conductor from damage.

Number of Conductors: 1


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Number of Conductors: 3


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Armored Building Cable

Armored building cable is a collection of plastic-coated insulated wire bundled together and protected by a corrugated metal jacket (called a sheath or cord) that serves as a conduit and provides grounding. Also known as BX cable or metal-clad (MC) cable, armored cable prevents accidental penetration better than NM-B building cable, but it is heavier and harder to handle, rip back, and cut. It is often used in applications where cable will be exposed to mechanical or environmental damage under normal operating conditions, such as power circuits in industrial plants and commercial buildings.

Number of Conductors: 2 , Stranded


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Number of Conductors: 2 with Bare AL Ground , Solid


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Number of Conductors: 2 with Insulated CU Ground , Solid


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Number of Conductors: 2 with Insulated CU Ground , Stranded


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Number of Conductors: 3 with Bare AL Ground , Solid


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Number of Conductors: 3 with Insulated CU Ground , Solid


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Number of Conductors: 3 with Insulated CU Ground , Stranded


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Number of Conductors: 4 with Insulated CU Ground , Solid


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NM-B Building Cable

Nonmetallic sheathed (NM-B) building cable is a flexible electrical cable consisting of three or more wire conductors (including one for grounding) bundled inside a thermoplastic jacket, or sheath, that is nonconductive and heat-resistant. It's lighter than armored building cable, making it easier to handle, and its pliable sheathing is easier to unspool and straighten out. It is commonly used in residential and commercial applications to provide power for outlets, lighting, and appliances. Type NM-B cable is for enclosed, interior wiring in dry locations only (typically within a wall, ceiling, or under a floor) and should not be used outdoors or anywhere it might get wet.

Number of Conductors: 2 with Bare CU Ground ( Bare/Black/White ), Solid


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Number of Conductors: 3 with Bare CU Ground ( Bare/Black/Red/White ), Solid


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Number of Conductors: 3 with Bare CU Ground ( Bare/Black/Red/White ), Stranded


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TFFN Fixture Wire

Thermoplastic flexible nylon (TFFN) fixture wire is a coated wire typically run through raceways that is specifically designed for fixture wiring. It's primarily used in commercial applications to power hardwired light fixtures in ceilings and walls. It's more flexible than THHN building wire but less resistant to heat, and it is only available in limited gauges (18 and 16 AWG).