翻訳と辞書 Words near each other ・ Ring Around Rosie ・ Ring Around the Bath ・ Ring Around the Moon ・ Ring Around the Sun ・ Ring Around the Sun (novel) ・ Ring Around the World ・ Ring binder ・ Ring bit ・ Ring bolt ・ Ring cairn ・ Ring Christmas Bells ・ Ring Christmas Bells (album) ・ Ring chromosome ・ Ring chromosome 14 syndrome ・ Ring chromosome 20 syndrome ・ Ring circuit ・ Ring class field ・ Ring connection ・ Ring counter ・ Ring Creek ・ Ring culture ・ Ring current ・ Ring Dem Bells ・ Ring der Delphine ・ Ring Deutscher Pfadfinderinnenverbände ・ Ring deutscher Pfadfinderverbände ・ Ring dike ・ Ring Ding Dong ・ Ring ditch ・ Ring Djursland Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Ring circuit ： ウィキペディア英語版 Ring circuit In electricity supply, a ring final circuit or ring circuit (often incorrectly called a ring main or informally a ring) is an electrical wiring technique developed and primarily used in the United Kingdom. This design enables the use of smaller-diameter wire than would be used in a radial circuit of equivalent total current. Flexible cords connected between appliance and plugs intended for use with sockets on a ring circuit are individually protected by a fuse in the plug. Ideally, the ring circuit acts like two radial circuits proceeding in opposite directions around the ring, the dividing point between them dependent on the distribution of load in the ring. If the load is evenly split across the two directions, the current in each direction is half of the total, allowing the use of wire with half the current-carrying capacity. In practice, the load does not always split evenly, so thicker wire is used. ==Description== The ring starts at the consumer unit (also known as ''fuse box'', distribution board, or ''breaker box''), visits each socket in turn, and then returns to the consumer unit. 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 to BS 1363. They are generally wired with 2.5 mm2 cable and protected by a 32 A fuse, an older 30 A circuit breaker, or a European harmonised 32 A circuit breaker. Sometimes 4 mm2 cable is used if very long cable runs (to help reduce volt-drop) or derating factors such as thermal insulation are involved. 1.5 mm2 mineral-insulated copper-clad cable (known as ''pyro'') may also be used (as mineral insulated cable can withstand heat more effectively than normal PVC) though more care must be taken with regard to voltage drop on longer runs. The protection devices for the fixed wiring need to be rated higher than would protect flexible appliance cords, so BS 1363 requires that all plugs and connection units incorporate fuses appropriate to the appliance cord. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ring circuit」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.