October 2013
Intermediate to advanced
192 pages
8h 30m
English
Content preview from Electric Wiring, 3rd Edition
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44 Wiring lighting points
shown in Fig. 4.7; this is an alternative to Fig. 4.5 and does not require a
separate junction box.
The conversion of an existing single switch, one-way control of a lighting
point to two-way control is one that is often required. It can be carried out
without disturbance of the wiring already in place.
The existing one-way switch is replaced by a two-way switch, and another
two-way switch is fixed at the other control point. The cable and
connections are then as shown in Fig. 4.7.
Control from more than two points
Where two-way switching is installed, it may be found that one switch is not
readily accessible from
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