October 2013
Intermediate to advanced
192 pages
8h 30m
English
Content preview from Electric Wiring, 3rd Edition
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56 Wiring lighting points
3H
CH0KE
E J
iFR
P.F. CAPACITOR
QUICKSTART UNIT
|
f000900009000^
I
M
2 3
4
KLJ
TUBE
Fig.
4.17. A quickstarting circuit. For voltages below 220 V, leads A and B are connected
to terminals 2 and 3
a 50 mm wide earthed metal strip can be fixed behind the length of the lamp,
or the tube must be of the type that has a metal strip cemented to the outside
of the tube; this strip must be connected to both lamp caps and earthed by
means of a brass lampholder (bayonet-cap tubes) or special clips (tubes with
bi-pin lampcaps).
Once the arc has been established, the voltage across the tube (and also
across the quickstart unit) fall ...
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