Article 100 of the NEC defines equipment as “ general term, including fittings, devices, appliances, luminaries, apparatus, machinery, and the like used as part of, or in connection with, an electrical installation. ”Electrical distribution equipment refers to the various devices and components used to control, protect, and distribute electricity throughout a power system. The distribution system typically starts from the substation, where electricity is stepped down from high voltage to lower voltage for use. The computer equipment account can include a broad array of computer equipment, such as routers, servers, and backup power generators. In a substation there are numbers of incoming and outgoing circuits each having its isolator, circuit breaker, transformers etc. These systems are designed to protect equipment, maintain reliability, and ensure. An electrical enclosure, power box (US), [citation needed] or feeder pillar (UK), [citation needed] is a cabinet for electrical or electronic equipment to mount switches, knobs and displays and to prevent electrical shock to equipment users and protect the contents from the environment.
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