4. The motor overload unit for a single-phase motor fed from an ungrounded 2-wire, single-phase AC
source will be placed in___conductor.
a. the phase
b. the neutral
c. either
d. neither
5. An individual disconnecting means
shall be provided for each controller and shall disconnect the controller. The disconnecting means shall be located___the controller location.
a. beyond the service of
b. as close as possible to
c. within 30 feet of
d. in sight from
6. Each motor used in a continuous duty application and rated more than____against overload.
a. 2
b. 3
c. ½
d. 1
e. â…›
7. A 480-volt motor circuit can be protected with a safety switch that is rated at___volts.
a. 240
b. 600
c. either a or b
d. neither a nor b
8. A 3Ø safety switch that is rated at____volts can be used as the disconnecting means for a 208-volt,
1Ø motor.
I. 240
II. 600
a. I only
b. II only
c. either I or II
d. neither I or II
9. A 3Ø safety switch that is rated at 600 volts can be used as the disconnecting means for a ___-volt, 3Ø motor.
I. 208
II. 240
III. 480
a. II only
b. I or II only
c. II or III only
d. III only
e. I or II or III
10. A 3-pole, 250-volt safety switch can be used as the disconnecting means for___motor circuit.
a. a 2-wire, 120-volt, 1-phase
b. a 2-wire, 208-volt, 1-phase
c. a 3-wire, 208-volt, 3-phase
d. a 3-wire, 240-volt, 3-phase
e. any of these