October 2013
Intermediate to advanced
192 pages
8h 30m
English
Content preview from Electric Wiring, 3rd Edition
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Wiring lighting points 43
Domestic lighting circuits are almost always rated at 5 A, or 6 A, which
means that if 100 W per lampholder is assumed, then up to twelve lighting-
outlets could be connected to each 5 A circuit subject to a maximum of
1200 W. In practice, it is usual to divide the fixed lighting into two or more
circuits, each with seven or eight lighting-outlets on it. It is also desirable
to leave one or more spare ways in the consumer unit for any possible
future extensions.
Cables for lighting
Lighting circuits, fed via a
5
A fuse or MCB, may be served by 1.0 or 1.5 mm
2
cable. 1.0 mm
2
cable is normally adequate but, if the circui ...
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