Electrical Wiring and Connections

One of the greatest benefits of electricity is its ability to transfer energy from where it is generated to where it is needed. Electrical wires, cables and cords are used to accomplish the transfer. Electrical wiring consists of a conductive material such as copper surrounded by an insulating material such as thermoplastic. The primary dangers associated with the distribution of electric power are electrocution and the generation of heat. These hazards must be considered when laying out and connecting all types of wiring.

• Define electricity • List the major dangers of electricity • List the factors which affect the resistance of a wire • Differentiate between the terms wire, cable, and cord • Explain the AWG wire sizing system • Describe the factors that go into selecting an insulation material • Describe the purpose of a raceway • Describe the correct and incorrect uses of flexible cords