October 2013
Intermediate to advanced
192 pages
8h 30m
English
Content preview from Electric Wiring, 3rd Edition
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48 Wiring lighting points
the weight to which a flexible cord may be subjected when it supports, or
partly supports, a lighting fitting as follows:
Cross-section Maximum
of conductor weigh t
(mm
2
) (kg)
0.5 2
0.75 3
1.0 5
The type of outlet-box used also has a bearing on this, since a thermoplastic
(e.g. PVC) type of box, if used for the suspension of a lighting fitting, must
not support more than 3kg. This obviously applies both to ceiling roses with
integral boxes and semi-recessed ceiling roses attached to plastic ceiling
boxes.
The ceiling rose cover should be slipped over the flexible cable before the
cable is connected to the rose, an
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