| 1. |
Individual single-pole circuit breakers, with identified handle ties, shall be permitted
as the protection for each ungrounded conductor of ____________________________________ .
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a)
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multiwire branch circuits that serve only single-phase line-to neutral and phase to phase loads.
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b)
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multiwire branch circuits that serve only single-phase line-to neutral loads.
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c)
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multiwire branch circuits that serve only phase to phase loads.
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| 2. |
In grounded systems, individual single-pole circuit breakers rated ____________ ac, with identified handle ties, shall be permitted as the protection for each ungrounded
conductor for line-to-line connected loads for single-phase circuits.
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a)
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120/240 volts
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b)
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120/240 and 277/480 volts
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c)
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277/480 volts
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| 3. |
For line-to-line loads in 4-wire, 3-phase systems or 5-wire, 2-phase systems, individual
single-pole circuit breakers rated 120/240 volts ac with identified handle ties shall be permitted as the protection for each ungrounded conductor, if the systems have a
grounded neutral point and the voltage to ground does not exceed ________
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a)
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120 volts.
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b)
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480 volts
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c)
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240 volts
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d)
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277 volts
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| 4. |
Individual single pole circuit breakers rated 125/250 volts DC with identified handle ties shall be permitted as the protection for each ungrounded conductor for line-to-line connected loads for 3-wire, direct-current circuits supplied from a system with a grounded neutral where the voltage to ground _____________________
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a)
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does not exceed 250 volts.
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b)
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does not exceed 120 volts.
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c)
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does not exceed 125 volts.
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| 5. |
Angle connectors for flexible metal and liquidtight metal conduit shall _____________
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a)
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be concealed
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b)
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not be concealed
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| 6. |
________________________ are now referred to as PVC.
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a)
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Homogenous PVC and nonhomogenous PVC
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b)
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Homogenous PVC
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c)
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nonhomogenous PVC
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d)
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a, b and c
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| 7. |
Busways shall be permitted to be installed behind access panels, provided the busways are totally enclosed, of nonventilating-type construction, and installed _____________________________ are accessible for maintenance purposes.
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a)
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the busbars
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b)
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so that the joints between sections and at fittings
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| 8. |
For other than dwelling units existing installed luminaires without disconnecting means, ________________ is (are) replaced, a disconnecting means shall be installed.
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a)
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a lamp
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b)
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at the time a ballast
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c)
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the lamps and ballat
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d)
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b or c
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| 9. |
A means shall be provided to ________________ disconnect each appliance from all ungrounded conductors .
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a)
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simultaneously
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b)
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individually
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| 10. |
Heating cables or panels in floors are required to be __________________
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a)
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GFP protected
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b)
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GFCI protected.
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c)
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ground fault protected
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