RMC is a type of what?

RMC stands for Rigid Metal Conduit, which is indeed a type of conduit. This type of conduit is constructed from thick steel or aluminum to provide robust protection for electrical wiring and is commonly used in both commercial and industrial settings. RMC is known for its strength and ability to withstand harsh environments, making it an excellent choice for applications requiring durability and mechanical protection from physical damage.

This choice is correct because conduits are used to house and protect electrical wiring, ensuring that it is safely distributed throughout a building or installation while meeting safety regulations. Other options such as insulation, cable, and connectors serve different purposes in an electrical system, such as providing thermal protection, conducting electricity, or connecting different electrical components, but they do not describe RMC.