Question 1
For a 20 A general-use branch circuit in a Canadian dwelling, what is the MINIMUM size of copper conductor typically required?
Question 2
When troubleshooting an unknown electrical fault, what is the first step of a systematic diagnostic methodology?
Question 3
When troubleshooting an unknown fault, what is the first step of a systematic methodology?
Question 4
What is the very first step in a systematic troubleshooting process?
Question 5
Which of the following is the first step in a systematic troubleshooting process after verifying the symptoms of a fault?
Question 6
A receptacle in a kitchen is not working. You verify that the breaker is on and there is line voltage at the panel. Which is the BEST next troubleshooting step?
Question 7
During troubleshooting, you measure full supply voltage at a motor starter line terminals but zero voltage at the load side when the starter should be running. What is the most likely cause?
Question 8
In a motor control centre, you find that a motor sometimes fails to start, and the control circuit uses multiple interlocks and limit switches. What is the best systematic approach to locate the open circuit?
Question 9
During an infrared inspection of a fully loaded panelboard, one phase bus appears significantly hotter than the others. The loads appear evenly distributed by breaker count. What should you consider first?
Question 10
A non-contact voltage tester lights up when held near a conductor. What does this indicate?
Question 11
When troubleshooting a control circuit, you measure 120V across an open switch. When the switch is closed, you measure 0V across it. What does this indicate?
Question 12
Which troubleshooting method involves splitting a circuit in half to isolate the fault location?