Question 1
Which procedure best describes a safe method to verify that a circuit is de-energized before starting work?
Question 2
Which sequence best describes a proper lockout procedure for a branch circuit?
Question 3
You are performing insulation resistance testing on a feeder using a megohmmeter. Before connecting the test leads, which step is essential?
Question 4
Which device is used to verify that a circuit is de-energized before beginning work?
Question 5
When checking an energized panel, what is the safest way to verify absence of voltage before touching conductors?
Question 6
Before working on a circuit that has been de-energized and locked out, what is the next critical step?
Question 7
What type of tester is most commonly used to verify that a branch circuit is de-energized before starting work?
Question 8
What is the main reason an electrician tests a meter on a known live source both before and after checking a circuit for absence of voltage?
Question 9
Which of the following is the safest action before opening a junction box that may contain live conductors?
Question 10
During lockout/tagout of a motor starter, which sequence is most appropriate?
Question 11
Which instrument is most appropriate for checking if a circuit is de-energized before starting work?
Question 12
Which tool is most appropriate to verify that a circuit is de-energized before beginning work?
Question 13
Which test instrument is BEST suited to safely verify that a feeder is de-energized before working on it?
Question 14
To verify a circuit is de-energized before touching conductors, which sequence describes best practice using a multimeter?
Question 15
Before working on a circuit that has been de-energized at the breaker, what should the electrician do FIRST to verify it is safe to touch?
Question 16
When preparing to work on a de-energized circuit, when should an electrician verify the absence of voltage with a properly rated meter?
Question 17
Which instrument is best suited to safely verify that a circuit is de-energized before beginning work?
Question 18
Before working on a branch circuit that you have de-energized at the panel, what is the next safest step?
Question 19
When using a non-contact voltage tester on a conductor, what condition should be met first?
Question 20
Which instrument is best suited to verify that a circuit is de-energized before beginning work?
Question 21
Before touching conductors in a junction box that is supposed to be de-energized, what simple tool can an electrician use to help verify the conductors are not live?
Question 22
Before working on a branch circuit that has been de-energized at the breaker, what should the electrician do to confirm it is safe?
Question 23
Before working on a lighting circuit that has been de-energized at the breaker, what is the next safest step?
Question 24
A non-contact voltage tester lights up when placed near a conductor. What does this indicate?
Question 25
Before beginning work on a branch circuit, which tool should an apprentice use to verify that the circuit is de-energized after opening the breaker?
Question 26
An apprentice has opened a three-pole breaker feeding a small three-phase motor. What is the correct sequence to verify the circuit is safe to work on?
Question 27
Which tool is best suited to safely verify that a circuit is de-energized before beginning work?
Question 28
A duplex receptacle is to be installed in a standard device box. What should the electrician do before terminating conductors on the device?
Question 29
In a commercial tenant fit-out, existing circuits are to be reused for new loads. What is a key step before reusing these circuits?
Question 30
Which step is most appropriate when using a non-contact voltage tester on a suspected live conductor?