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  2. Electric power distribution - Wikipedia

    en.wikipedia.org/wiki/Electric_power_distribution

    A 50 kVA pole-mounted distribution transformer . Electric power distribution is the final stage in the delivery of electricity.Electricity is carried from the transmission system to individual consumers.

  3. Ring main unit - Wikipedia

    en.wikipedia.org/wiki/Ring_main_unit

    In an electrical power distribution system, a ring main unit (RMU) is a factory assembled, metal enclosed set of switchgear used at the load connection points of a ring-type distribution network.

  4. Substation - Wikipedia

    en.wikipedia.org/wiki/Substation

    A 50 Hz electrical substation in Melbourne, Australia, showing three of the five 220 kV/66 kV transformers, as well as high-voltage transformer fire barriers, each with a capacity of 150 MVA.

  5. Electric switchboard - Wikipedia

    en.wikipedia.org/wiki/Electric_switchboard

    An electric switchboard is a piece of equipment that distributes electric power from one or more sources of supply to several smaller load circuits. It is an assembly of one or more panels, each of which contains switching devices for the protection and control of circuits fed from the switchboard.

  6. Switchgear - Wikipedia

    en.wikipedia.org/wiki/Switchgear

    High-voltage switchgear A section of a large switchgear panel. Tram switchgear This circuit breaker uses both SF 6 and air as insulation.. In an electric power system, a switchgear is composed of electrical disconnect switches, fuses or circuit breakers used to control, protect and isolate electrical equipment.

  7. Distribution board - Wikipedia

    en.wikipedia.org/wiki/Distribution_board

    A distribution board (also known as panelboard, circuit breaker panel, breaker panel, electric panel, fuse box or DB box) is a component of an electricity supply system that divides an electrical power feed into subsidiary circuits while providing a protective fuse or circuit breaker for each circuit in a common enclosure.

  8. Ring circuit - Wikipedia

    en.wikipedia.org/wiki/Ring_circuit

    In electricity supply design, a ring circuit is an electrical wiring technique in which sockets and the distribution point are connected in a ring. It is contrasted with the usual radial circuit, in which sockets and the distribution point are connected in a line with the distribution point at one end.

  9. Electrical room - Wikipedia

    en.wikipedia.org/wiki/Electrical_room

    Electric switchboards; Distribution boards; Circuit breakers and disconnects; Motor control centers; Transformers; Busbars; Electricity meters; Backup batteries in a Battery room; Fire alarm control panels; Distribution frames; In large building complexes, the primary electrical room may house an indoor electrical substation.