Electrical Test Equipment (NWLC) – Study Guide and
Practical Reference Material
What two functions of the digital multimeter are most commonly used by line
workers? - correct answer ✔✔AC voltage and continuity functions
Finish the sentence (as written in the text) regarding reading voltage with a
multimeter. - correct answer ✔✔When reading voltage, all possible voltage
combinations are checked.
What is the continuity tester of a multimeter used for when speaking of
transformers? - correct answer ✔✔Proving the integrity of transformer coils.
What does a clamp-on ammeter measure? - correct answer ✔✔Current in the
hot legs and neutral of secondary circuits and services.
How does the ammeter determine the current reading? - correct answer
✔✔Based on the strength of the magnetic field around the conductor.
When would an ammeter be used on a primary line? - correct answer ✔✔For
checking load balances and conductor loading. You can also check current
flow prior to installing jumpers during live-line maintenance.
When would recording voltmeters and ammeters be used? - correct answer
✔✔When a problem exist on a secondary circuit or service.
What is the purpose of a phase sequence indicator? - correct answer ✔✔It's
used as a reference tool to ensure that the phase sequence of a three-phase
service is not accidentally changed.
