Types Of Electrical Wiring Used In Homes

The common type of home electrical wiring is non metallic or nm cable.

Types of electrical wiring used in homes.

You may also know it as romex cable which is the most popular brand name of this type of electrical wiring. Old electrical wiring types photo guide to types of electrical wiring in older buildings. Aslan alphan getty images. These markings provide important information about the wiring and insulation including the wire size and material the type of insulation the number of wires contained inside a cable and any special ratings or characteristics of the wire.

Wire types and sizing. It helps to understand a few basic terms used to describe wiring. In general however there are only a couple varieties used for wiring a residential home. Learning about the types of electrical wiring in homes is a great place to start.

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. Those conductors are wrapped in a flexible plastic jacket also known as sheathing. Electrical wires and cable have markings stamped or printed on their insulation or outer sheathing. Whether you re building a new home or replacing the wiring in an older home use this guide to learn more about the types of electrical wiring commonly used in homes these days.

While varying somewhat by area of the country in the u s latin america europe and other areas there are recognizable generations of electrical wiring knob tube greenfield armored cable or bx wiring plastic or nm. We illustrate a variety of types of electrical wiring found in older buildings. We ve separated the guide into two sections. In the following 200 some years the methods for installing wiring in those homes has seen several important innovations aimed at improving the safety of electrical systems.

Nm cable is usually three or more individual conductors. In order to understand the different types of wiring systems in your home it is important to first know the basics of electrical wiring. Electrical service to american homes began in the late 1890s and blossomed from 1920 to 1935 by which time 70 percent of american homes were connected to the electrical utility grid. Understanding electrical wiring labeling.

Check with your local building inspector before you start any electrical wiring and cable project and be sure to obtain required permits. When wiring a house there are many types wire to choose from some copper others aluminum some rated for outdoors others indoors. Not only could old insulating material rot and expose hot wires but systems that were designed to support a few lights and radios are now being asked to power computers microwaves hair dryers refrigerators and many other modern devices. An electrical wire is made up.