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BS 1363 (British 13 A/230-240 V 50 Hz grounded and fused)

 
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sasuke18


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MessagePosté le: Ven 16 Sep - 08:32 (2011)    Sujet du message: BS 1363 (British 13 A/230-240 V 50 Hz grounded and fused) Répondre en citant

BS 1363 (British 13 A/230-240 V 50 Hz grounded and fused)

The plug has a fuse inside. The fuse is required to manufacturer protect the cord, as British wiring standards allow very high current ring main circuits to the socket. Accepted practice is to choose the smallest standard fuse (3, 5 or 13 A) that will allow the appliance to function. Using a 13 A fuse on an appliance with thin cord is a fire hazard. The electornic part fuse is 1 in (25.40 mm) long, conforming to standard BS 1362. Sockets are required to be wired with neutral on the left and live on the right (viewed from the front of the socket) so that the fuse in the plug disconnects the live feed if it blows. The same convention is used for all British sockets connected directly to mains electric part wiring.UK wiring regulations (BS 7671) require sockets in homes to have shutters over the live and neutral connections to prevent the insertion of objects other than electric plugs. On most designs, these shutters are opened by the insertion of the longer earth prong. On some designs they are opened by the simultaneous semiconductor insertion of the live and neutral prongs of the right shape and spacing. The effect of the shutters is to help prevent the use of plugs made to other standards, and to prevent children and others poking things into the dangerous connections. On plugs for Class II appliances that do not require an earth, the earth pin is often plastic and serves only to open the semiconductors shutters and to enforce the correct orientation of live and neutral. It may be possible to open the shutters by putting a screwdriver blade into the earth socket, so as to insert a Type C Plug (but not the BS 4573 UK shaver) or other plug types, but this can be dangerous for such plugs will not have a fuse and will often not fit properly.


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MessagePosté le: Ven 16 Sep - 08:32 (2011)    Sujet du message: Publicité

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