UNIT 30 REVIEW QUESTIONS ANSWER KEY GO BACK TO INDEX
30-1) In the United States, electrical hazards cause more than deaths and
30-2) Electrical accidents rank among all causes of work related deaths.
30-3) Materials that exhibit very little resistance to electricity flow are called?
30-4) Materials that exhibit a very high resistance to electricity flow are called what?
30-5) Is it true that a low voltage system cannot harm you?
30-6) How would you help a person who is “frozen” and unable to pull free of the
circuit?
30-7) Why would an electric drill have a three-prong plug?
30-8) How can electrical shock occur?
30-9) What is meant by the term grounded in an electrical circuit?
30-10) How does a GFCI breaker provide for electrical safety?
30-11) What is meant by a “closed” breaker as compared to an “open” breaker?
30-12) How can you determine if a circuit breaker has tripped and how do you reset it?
30-13) What steps should you take before resetting a circuit breaker?
30-14) Who can remove a lock from an electrical circuit that has been locked and tagged?
30-15) Is lockout/tagout required in a residential setting?
30-16) What are the four steps to take when testing a circuit for voltage?
30-17) Why should you never replace a fuse with one that has a higher amperage rating?
30-18) What electrical wire size is larger in diameter, AWG 14 or AWG 12?
30-19) Why is consideration of electrical wire size important when wiring an electrical
circuit?
30-20) What type of information can be determined from the markings found on
electrical cable?
30-21) Why is Class 2 wiring not required to be routed through conduit or
raceways?
30-22) On hat type of applications would Class 1 remote-control circuits be
found?