In electrical terms, what does 'MC' refer to?

In electrical terminology, 'MC' stands for Metal-clad cable. Metal-clad cables are a type of electrical cable that have a metallic covering, typically made of aluminum or steel. This outer layer provides mechanical protection, making them suitable for various environments, including those exposed to physical damage or harsh conditions. The grounding capability of the metal sheath also enhances safety by allowing any fault currents to be effectively directed, which is particularly important in electrical installations.

Metal-clad cables are commonly used in industrial and commercial applications where durability and safety are paramount. They accommodate multiple conductors, ensuring that the electrical services are contained in a single assembly, which streamlines the installation process.

Other options, while relevant in specific contexts, do not correctly describe 'MC' in this instance, which focuses specifically on the protective and structural qualities of the cable itself.