Which type of cable is typically used for general lighting circuits?

Twin and earth cable is the standard type used for general lighting circuits due to its design and suitability for low-voltage applications found in residential and commercial wiring. This cable consists of two insulated conductors, typically used for the live and neutral connections, along with an uninsulated earth conductor. The earth conductor provides a safety feature to ensure any potential faults are directed safely to the ground, reducing the risk of electrical shock or fire.

The construction of twin and earth cable allows it to be easily installed in various settings, whether embedded in walls, run along surfaces, or installed in conduits. Furthermore, its designation and standards enable it to effectively carry the electrical load required for lighting, making it both practical and compliant with electrical regulations.

In contrast, alternatives such as single core cables are often used in applications requiring individual conductors, rather than the multi-core configurations necessary for standard lighting circuits. Coaxial cables are primarily designed for high-frequency signal transmission and are unsuitable for power applications. Fiber optic cables serve a completely different purpose, being used for data transmission rather than electrical power distribution. These specifications underscore why twin and earth cable is the appropriate choice for general lighting circuits.