There are many types of power cables depending on their size, construction, function and performance. The main components of a power cable are conductors and the protective covering. Power cables have two conductors or more, which depends on their voltage carrying capacity. Power cables are also known as electrical cables.
Copper and aluminum are two metals commonly used in power cables. The use of metals can change depending on the use of the cable. Copper is mostly used for cables that are used in electronics, integrated circuits and switches. Aluminum use is widespread in cables used for motors, telephone lines and lights.
Different types of power cables as per their purpose and functionality are:
Twisted pair cable
In this type of power cable two or at times more copper wires are used. These insulated wires are twisted or wrapped around each other and are color-coded. The variation in the number of wires makes the difference as far as resistance to outside disturbances is concerned. The more the number of wires the better the ability of the cables to keep out noises and disturbances. These cables offer ease of installation and do not cost much. Twisted pairs are mostly used in telephones lines.
In this type of power cable the steel conductor is plated with copper. This is further wrapped in layers of metal and then shielded with plastic. These are used in home audio-video systems, computer networks and television. There are several versions of coaxial cables such as semi-rigid, hard line, twin axial, RG/6 and biaxial.
In this type of power cable insulated wires are used that are packed together using Mylar foil made of aluminum. These insulated wires can be one or even more depending on the functionality of the cable. The aluminum shield is put in place to keep the cable protected from power irregularities and external disturbances. These are capable of transmitting high voltage therefore shielding is necessary for these types of cables.
In this type of power cable many insulated wires are placed parallel to each other giving it an appearance of a ribbon. This parallel wire design makes it possible for more than one signal to transmit at the same time. A standard ribbon cable can have four wires or more; up to a dozen. Ribbon cables are used to connect different components of a computer and also to connect network devices.