An enclosed channel designed expressly for holding wires or cables gives bodily safety and a route for electrical wiring. These programs could be constructed from steel, plastic, or fiber, and could be inflexible or versatile. Examples embody conduits, trunking, cable trays, and surface-mounted moldings.
This technique of wiring presents important benefits, together with shielding conductors from injury attributable to affect, moisture, and chemical publicity. It additionally facilitates simpler modifications or additions to electrical programs, as wires could be pulled or added with out disturbing the encompassing construction. Traditionally, such protecting measures have diminished the chance {of electrical} fires and improved the general security and reliability {of electrical} installations.