An enclosed channel designed expressly for holding wires or cables provides physical protection and a route for electrical wiring. These systems can be constructed from metal, plastic, or fiber, and can be rigid or flexible. Examples include conduits, trunking, cable trays, and surface-mounted moldings.
This method of wiring offers significant advantages, including shielding conductors from damage caused by impact, moisture, and chemical exposure. It also facilitates easier modifications or additions to electrical systems, as wires can be pulled or added without disturbing the surrounding structure. Historically, such protective measures have reduced the risk of electrical fires and improved the overall safety and reliability of electrical installations.
