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Electrical Applications 2 by David W. Tyler

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Transformers 67
Low-voltage
output
High-voltage
input
Core
High-voltage
winding
Low-voltage
winding
Figure 5.6
secondary wires would not receive an electric shock since there is
nowhere for currents which would flow through the body to return
to.
4 Electric arc welding. The primary is often connected across
two lines of a three-phase supply and so is at 415 V. The secondary
provides an output at between 90 V and 110 V when no welding is
taking place. This falls to about 25 V once the arc is struck. The use
of two lines for the input spreads the load over two phases of the