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Which of the following types of wires are also known by the brand name Romex?

Which of the following types of wires are also known by the brand name Romex? Correct Answer Non-Metallic Sheathed Wires

Nonmetallic sheathed wire:

  • The nonmetallic designation refers to the outer sheath that bundles individual wires together like a cable.
  • This is in contrast to the metallic sheathed cable or conduit wiring, in which the bundle of individual conductors is protected by some form of a metal conduit.
  • Typically there are three parts to the Nonmetallic sheathed wire as outer cable sheathing, wire insulation, and wire.

 

Romex brand: 

  • Romex is the brand name of a nonmetallic sheathed electrical cable made by Southwire Company, LLC of Carrollton, Georgia.
  • One feature of Romex is that it includes SIMpull, an embedded slippery coating on the sheathing that reduces friction when pulling the cable through studs and other difficult passages.

 

Advantages of Nonmetallic sheathed wire: 

  • It is lighter than the metallic sheathed wiring, so easier to handle.
  • It is easier to pull through the holes in the studs because of smooth sheathing.
  • It is cheaper than the metallic sheathed wiring.
  • It is easy to rip since the sheathing is plastic, not metal.

Important Points

  • The triplex wire is usually used for overhead single-phase service, it contains three individual wires twisted around each other.
  • Panel feed cables are generally black insulated THHN wire and are used to power the main junction box and the circuit breaker panels.
  • A single strand wire is usually a cylindrical, flexible strand or rod of metal. Use to bear mechanical loads or electricity and telecommunication signals.

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