October 2013
Intermediate to advanced
192 pages
8h 30m
English
Content preview from Electric Wiring, 3rd Edition
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50 Wiring lighting points
through which current flows to the lamp. To ensure unobstructed movement
of the plunger and avoid breakage of the wires, only flexible cords should be
used for wiring this type.
Fig.
4.13. Two types of bayonet lampholder: a solid plunger (left) and a spring
plunger (right)
The spring-plunger type is of two-part construction, with the contact part
retracting against a spring inside a fixed barrel with integral wiring terminal,
through which current flows to the lamp. As the terminal remains stationary
during plunger contact movement, suitable cables as well as flexible cords
may be used for wiring.
IEE Regulation
60 ...
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