October 2013
Intermediate to advanced
192 pages
8h 30m
English
Content preview from Electric Wiring, 3rd Edition
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13 A standard socket-outlet and circuits 63
front of the socket). To avoid making mistakes in wiring socket-outlets, BS
Specifications require that the sockets shall be marked as indicated.
Plugs must also be marked with the letters L, N and E or with appropriate
colours (see page 68) to indicate the phase (formerly 'live'), neutral and earth
pins respectively when connecting flexible cords, the cores of which are
similarly coloured.
Exposed metalwork of all apparatus (except appliances which are double-
insulated) must be connected to the appropriate protective conductors. This
is effected on portable apparatus through the protective conducto ...
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