Figure 5-12.Checking a switch in the OFF position for
safe habits. Remember that getting too friendly with
electricity can be a shocking experience.
A circuit breaker operates much the same as a
switch-the breaker is either ON or OFF. The neon
tester lead is placed on the neutral bar and the other
lead is placed on the screw terminal of the circuit
breaker (fig. 5-18). If the breaker is good, the neon
tester will light when the breaker is in the ON position
and will not light when the breaker is in the TRIPPED
Figure 5-13.Checking a switch in the ON position for proper
If the neon tester remains lighted in both positions,
the breaker is shorted and should be replaced. If the
neon tester does not light in either position, the circuit
breaker is open and should be replaced. Remember to
reset the circuit breaker.
Figure 5-14.Technique for determining which wire is hot.