I was teaching my class
last night and one student told me the following story that happened at his plant.
Later, when one of the plant electricians had to pull fuses on this switch, he opened the switch and tested the terminals to make sure the circuit was de-energized. Lo and behold he found the load side of the switch energized!
Lesson Learned? Always test the line and load terminal and assume the circuit is energized.
I have heard of this situation happening
two times, and both times the electrician did not test for lack of potential. One
time the electrician used an ohmmeter to check the fuses and naturally the meter was
destroyed and the electrician received severe burns.
Copyright © 2002 Mike Holt Enterprises,Inc.