1.The highest current rating of an Edison-base plug fuse is:

• 30 amperes

• 60 amperes

• 100 amperes

• 200 amperes

2. Edison-base plug fuses may be used only in:

• New work

• Existing installations under specified conditions

• Motor control panels

• Motor circuits

3. Which of the following is a nonstandard ampere rating for a plug fuse?

• 15 amperes

• 20 amperes

• 30 amperes

• 35 amperes

4. The maximum size fuse allowed to protect a No. 14 AWG THW conductor is:

• 10 amperes

• 15 amperes

• 20 amperes

• 25 amperes

5. When a circuit breaker trips, its operating handle will be in which of the following positions?

• Closed (energized) position

• Open position

• Half-way between the ON and OFF positions

• No change

6. Plug fuses of 15 ampere and lower rating must be identified by what type of window configuration?

• Round

• Hexagonal

• Square

• Octagonal

7. Which of the following conductors need overcurrent protection on a residential electric service?

• Grounded conductor

• Bonding conductor

• Ungrounded conductors

• Equipment grounding conductor

8. A circuit feeding three single-phase motors with full-load current ratings of 40, 20 and 20 amperes, respectively, requires the following dual-element time-delay fuse size:

• 110 amperes

• 150 amperes

• 200 amperes

• 250 amperes

9. A nontime-delay fuse protects a circuit with all motor loads with the largest motor drawing a full-load current of 40 amperes, and two other motors drawing a full-load current of 15 amperes

each. What fuse size should be used?

• 100 amperes

• 150 amperes

• 175 amperes

• 250 amperes

10. An “AFCI receptacle” is known as a(n):

• Arc resistant outlet

• Upstream parallel arc fault protector

• Branch circuit-type AFCI

• Combination device