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Old Wylex standard consumer unit fitted with seven wire fuses (one fuse-way is not in use) Hager consumer unit fitted with MCBs, one RCD, and one double-pole switch In the United Kingdom, BS 7671 defines a consumer unit as "A particular type of distribution board comprising a type tested coordinated assembly for the control and distribution of ...
The ring is fed from a fuse or circuit breaker in the consumer unit. Ring circuits are commonly used in British wiring with socket-outlets taking fused plugs to BS 1363 . Because the breaker rating is much higher than that of any one socket outlet, the system can only be used with fused plugs or fused appliance outlets.
Electrium is a German-owned British manufacturer of electrical wiring accessories, circuit protection, cable management, and control equipment.. Electrium has two sites across the UK as of 2025: the old main factory in Wythenshawe, Manchester closed in 2024, [1] leaving only the distribution center at Hindley Green, Wigan, and the head office at Cannock, West Midlands.
(3) The consumer unit and obviously its final circuits, plus the tails connecting the consumer unit either directly to the meter or to a supplier fitted isolator, belong to the owner of the premises. (If an owner has their own isolator fitted between the meter and consumer unit then naturally they would own it and the tails on both sides of it).
onshore units of electrical shore connections for inland navigation vessels. 'Premises' covers the land and all facilities including buildings belonging to it. Exclusions [4]: systems for the distribution of electricity to the public other than prosumer's installations covered by Chapter 82
Some Wylex standard models were made with an RCD instead of the main switch, but (for consumer units supplying the entire installation) this is no longer compliant with the wiring regulations as alarm systems should not be RCD-protected. There are two styles of fuse base that can be screwed into these units: one designed for rewirable fusewire ...
The two phrases, "customer-premises equipment" and "customer-provided equipment", reflect the history of this equipment.Under the Bell System monopoly in the United States (post Communications Act of 1934), the Bell System owned the telephones, and one could not attach privately owned or supplied devices to the network, or to the station apparatus.
Before the introduction of BS 317, GH Scholes (Wylex) introduced (in 1926) an alternative three-pin plug [28] in three sizes, 5 A, 10 A and 15 A with a round earth pin and rectangular live and neutral pins. A fused 13 A version of this continued to be available after the introduction of BS 1363, illustrating that BS 546 was not used exclusively ...