Types Of Electrical Wiring Romex

Romex is a cable of two or more wires enclosed in a plastic or rubberized sheath.

Types of electrical wiring romex.

Art plumbing ac electric is here to explain the basics of home wiring by looking at the different types sizes and colors of electrical wires. The most common types of romex are rated only for indoor use and come in 14 and 12 awg wire sizes. Nm 14 2 romex has a black insulated wire a white insulated wire and a bare ground wire all 14 gauge. Romex is a common type of residential wiring that is categorized by the national electrical code nec as underground feeder uf or non metallic sheathed cable nm and nmc.

Manufactured by southwire romex is a widespread type of residential wiring used in many home applications. Nm cable also commonly known by the common trade name romex is the most common form of electrical wire nm cable is simply a bundle of individual conducting wires wrapped in a plastic vinyl outer sheathing. Origin of romex brand wire. Electrical wiring and electrical connectors are essential.

The national electrical code nec and local building codes regulate the types of electrical wires and cable that can be used in specific electrical applications as well as the manner of installation. Nm and nmc conductors are composed of two or more insulated conductors contained in a non metallic sheath. Check with your local building inspector before you start any electrical wiring and cable project and be sure to obtain required permits. In this article we ll show you some house wiring basics how to position outlet and switch boxes and run the electrical cable between them.

The romex name comes from rome cable corp. Of rome new york which originally produced the cable. Romex is a brand name that is well known for manufacturing this type of electrical wire. In order to understand the different types of wiring systems in your home it is important to first know the basics of electrical wiring.

There are four main types of romex wires each delivering different amperage and denoted by a separate color for quick. Was also a major source of aluminum wire produced by its parent company alcoa. The cable includes a bare ground wire wrapped in paper. We won t cover many other house wiring details.

The company was an industry leader until it filed for bankruptcy in 2003 and its factory was largely demolished in 2010. Plastic boxes and flexible nonmetallic cable commonly called romex put electrical wiring projects within the skill range of every dedicated diyer. There are a variety of cables and connectors that offer different uses from doorbell wiring and thermostat wiring to speaker wire ethernet cord wires weatherproof wiring connectors and more. The coating on nmc cable is non conducting flame resistant and moisture resistant.

In fact the average home has about two miles of cable running through it. Normally the cables carry 10 12 or 14 gauge conducting wires for individual house circuits.