Types Of Electrical Wiring Pdf

It helps to understand a few basic terms used to describe wiring.

Types of electrical wiring pdf.

We know that electrical circuit is a closed path through which electricity flows from phase or hot wire to the device or apparatus and then back the source though neutral wire. What is electrical wiring different types of electrical wiring systems. Nm and nmc conductors are composed of two or more insulated conductors contained in a non metallic sheath. Electrical wires and cable have markings stamped or printed on their insulation or outer sheathing.

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. The coating on nmc cable is non conducting flame resistant and moisture resistant. Cleat wiring methods of electrical wiring systems w r t taking connection. Conduit is typically required where wiring is exposed or where it might be subject to damage.

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. Understanding electrical wiring labeling. In the early days of electrical wiring wires used to be insulated with cotton.

An electrical wire is a type of conductor which is a material that conducts electricity in the case of household wiring the conductor itself is usually copper or aluminum or copper sheathed aluminum and is either a solid metal conductor or stranded wire. Types of electrical wiring. Along the way the electricity path may consist of fixtures switches receptacles junction boxes etc. Loop in or looping system casing and capping wiringbatten wiring cts or trs lead sheathed wiringconduit wiringsurface conduit wiringconcealed conduit wiringtypes of conduitmetallic conduit non metallic conduit.

A conduit can be made of metal or plastic and may be rigid or flexible. Check with your local building inspector before you start any electrical wiring and cable project and be sure to obtain required permits. 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. Aslan alphan getty images.

Types of electrical wiring. However devices at the time like outlets switches and fans were not designed to work with aluminum wiring posing a serious safety hazard. The term electrical conduit refers to durable tubing or other types of enclosure used to protect and provide a route for individual electrical wiring conductors.

This is no longer accepted practice.