October 2013
Intermediate to advanced
192 pages
8h 30m
English
Content preview from Electric Wiring, 3rd Edition
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2 Wiring circuits simply explained
L
!>
PHASE
SUPPLY TERMINALS
I 1 ^° *
LAMP
LAMP
1
0 O
'LOOP
v r ^ v r ^ /WIRES
NEUTRAL
Fig.
1.2. In the simplest parallel circuit both lamps have the full voltage across them
When several circuits have to be supplied from the same mains, the switch
wires are all connected to one side of the supply and the return (or neutral)
wires from the apparatus to the other side. These circuits are then in parallel.
The full electrical pressure of the supply (in volts) is applied to each circuit
and the amount of power (in watts) taken by any one circuit is independent of
the power taken by the other circuits.
Colour codin ...
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