October 2013
Intermediate to advanced
192 pages
8h 30m
English
Content preview from Electric Wiring, 3rd Edition
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134 Installation of conduit systems
be clip-in plain bore, or screwed at one end and plain bore entry at the other
end. The screwed types may be male-threaded for use with locking rings or
female-threaded for use with male bushes.
An earthing terminal must be provided on all metal boxes and plastic
switch boxes and connected to the protective conductor.
Wiring non-metallic conduits
Cables used are the PVC-insulated non-sheathed type. Where it is necessary
for a draw wire to be used for 'pulling-in', a liberal smear of grease or soft soap
at the entering position, or a smear of liquid paraffin on the cables themselves,
will assist greatly.
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