Electrical cable is used in a variety of applications, including for domestic and commercial uses. Its main purpose is to transmit power. Typically, an electrical cable has two or more wires, which are insulated from each other to prevent the current from flowing out. Each wire is usually made of copper. However, other metals and polymers can also be used. In addition to the wires, a cable may also contain a sheath or insulator. The sheath is designed to protect the wires from the environment and prevent chemical reactions that might damage them. Generally, an insulator is a plastic coating that surrounds the conductor and helps to prevent the leakage of electricity.

A common type of electric cable is the coaxial cable. Coaxial cables are insulated with a tube-like conducting shield. This type of cable is often used in audio and video signal transmission. Another type of cable is a ribbon cable. These cables are flexible and ideal for a variety of applications. They can handle low voltages and can be used in places where high voltage cables are not practical.

In addition to coaxial and ribbon cable, other types of electrical cable include the bare wire, twin lead cable, and triaxial cable. All of these types are available in solid or stranded form. Depending on the application, the type of insulation material is selected. Polyethene (PE) is a moisture-sensitive polymer that offers great performance at high temperatures. Other types of insulation are thermoset and thermoplastic.

Some common types of electric cable are power cables, control cables, and low voltage cables. Power cables are often used in electric power distribution and industrial power installations. They feature a number of wires grouped into seven strands. Usually, the power cable is installed underground or overhead.

Typical low voltage cables are designed according to harmonized international standards. Low voltage cables are generally used in public and industrial applications. Common types of cables are available in screened, oil-filled, and gas-pressurized versions. There are also firefighting cables that are specially manufactured to transport electrical energy during extreme conditions.

Depending on the application, the number of wires may be different. Most electrical cables have a gauge number, which refers to the size of the wires. For example, a cable rated for 600 volts has a gauge number of 14/2. If there are more than 14 wires, the cable is called a multi-core. Multi-core cables are designed to make connections easier and to eliminate messy connections.

Depending on the application, a conductor can be either a bare wire or a stranded wire. Stranded conductors are more flexible. But they also carry more current. Bigger wires can cause damage to appliances. So, it’s recommended to use a smaller wire.

When buying an electrical cable, make sure you check the manufacturer’s specifications. This will help you determine the appropriate wire size for your applications. Also, you will need to know the voltage you need for your needs. You can look for a cable that is certified to UL, which stands for Underwriter’s Laboratories.