10 Different Types of Electrical Wire and how to Choose One > 자유게시판

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September 1995: BS 1363-2:1995 "13 A plugs socket-outlets adaptors and connection units - Part 2: Specification for 13 A switched and unswitched socket-outlets" published. November 1995: BS 1363-4:1995 "13 A plugs socket-outlets adaptors and connection units - Part 4: Specification for 13 A fused connection units switched and unswitched" published. August 2008: BS 1363-5:2008 "13 A plugs socket-outlets adaptors and connection units - Part 5: Specification for 13 A fused conversion plugs" published. August 2016: BS 1363-1:2016 (Title unchanged) published. August 2016: BS 1363-2:2016 (Title unchanged) published. August 2016: BS 1363-3:2016 (Title unchanged) published. August 1984: BS 1363:1984 "Specification for 13 A fused plugs switched and unswitched socket-outlets" published. December 1960: BS 1363:1947 Supplement No. 2, added specification for Resilient Plugs. December 1961: BS 2814:1957 Amendment 2, title simplified to "13 Ampere Switch Socket-Outlets". This standard superseded both BS 1363:1947 and BS 2814:1957. Only 3 A and 13 A fuses are specified. This standard superseded BS 1363:1967. Changes include the introduction of sleeved pins on Line and Neutral, metric dimensions replacing inches, specifications added for non-rewirable plugs and portable socket-outlets. Other exceptions to the use of BS 1363 plugs and sockets include equipment requiring more than 13 A, low-power portable equipment (such as shavers and toothbrushes) and mains-operated clocks.

BS 1363 was introduced in 1947 as one of the new standards for electrical wiring in the United Kingdom used for post-war reconstruction. In 1941 Lord Reith, then the minister of Works and Planning, established committees to investigate problems likely to affect the post-war rebuilding of Britain. This makes the claim scenario the same as it would be if an individual needed to prove that they had actually been knocked down by the owner of the EV, what are electric cables with the claim then made against their insurer. It consists of two or more individual wires wrapped inside a protective plastic sheathing. The first British standard for domestic three-pin plugs was BS 317 Hand-Shield and Side Entry Pattern Three-Pin Wall Plugs and Sockets (Two Pin and Earth Type) published in 1928. This was superseded in 1930 by BS 372 Side-Entry Wall Plugs and Sockets for Domestic Purposes Part II which states that there are only minor alterations from BS 317. In 1934, BS 372 Part II was in turn superseded by the first edition of BS 546 Two-Pole and Earthing-Pin Plugs and Socket Outlets. May 1950: BS 1363:1947 Amendment 3, title changed to "Specification for two-pole and earthing-pin fused-plugs and shuttered socket-outlets for A.C. circuits up to 250 Volts (not intended for use on D.C. circuits)".

Depending on purpose and age, these circuits may utilize open-wire conductors, twisted-pair cables (similar to telephone networks), coaxial cables (similar to CATV networks), or fiber optic cables. Like armored cables, metal-clad cables feature metal sheathing that offers protection to the wiring, allowing it to be installed in areas where it may be vulnerable to damage. However, it may also be possible to force the Euro plug into British sockets. This plug was used to connect low-power appliances (and to adaptors from the larger socket types). An example would be Class II appliances from mainland Europe which are fitted with moulded europlugs. In BS 546 there are no dimensions for socket contacts, instead they are required to make good contact with the specified plug pins. In practice most BS 546 plugs are unfused with fused versions being unusual and expensive. In this arrangement a cable connected to a fuse, or circuit breaker, in the distribution board was wired in sequence to a number of sockets before being terminated back at the distribution board, thus forming a final ring circuit.

However, the BS 1363 system is not limited to use with final ring circuits being suitable for radial circuits. Since the fuse or circuit breaker for a final ring circuit has to be rated for the maximum current the final ring could carry (30A or 32A for a breaker), additional protection is required at each socket-plug connection. One of the other recommendations in the report was the introduction of the final ring circuit system (often informally called a "ring main"). 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 at any time. Plugs fitted with BS 546 fuses have been optional since the original BS 546:1934 with maximum fuse ratings of 2 A in the 2 A plug, and 5 A in the 5 A, 15 A and 30 A plugs. Also in 1934 the 10th Edition of the IEE's "Regulations for the Electrical Equipment of Buildings" introduced the requirement for all sockets to have an earth contact. The variants use a flattened earth pin, each at a different specified rotational position. Each has the same general appearance but they are different physical sizes to prevent interchangeability, they use pin spacing which is also different from the two pin plugs specified in BS 372, so earthed plugs will not fit into unearthed sockets, and vice versa.