Transcript Two Minute Drill Number Three

Two Minute Drill Number
32- Journeyman
Improving your skill in code Look Up
Increasing Speed Drill
Copyright 2008 Ted "Smitty" Smith
Directions
• Left click on the presentation ICON located at the bottom
of the slide directory to the left of the this slide.
• Each slide will transition to the correct answer
automatically in 2:00 minutes. The correct answer will
transition in 15 seconds. As you progress through the
slide show, the time for each question will be
reduced.
• This drill is primarily concerning Journeyman Electrical
installations.
Copyright 2008 Ted "Smitty" Smith
• 1. Standard trade size 2-inch rigid
polyvinyl chloride conduit (PVC),
shall be supported at least every
_____.
a. 3 feet
b. 5 feet
c. 6 feet
d. 8 feet
Copyright 2008 Ted "Smitty" Smith
• 1. b
Tbl. 352.30
Copyright 2008 Ted "Smitty" Smith
• 2. When sizing time-delay Class CC
fuses for motor branch-circuit, shortcircuit, and ground-fault protection, they
are to be sized at the same value as
_____.
a. inverse-time circuit breakers
b. Non-time-delay fuses
c. Instantaneous trip circuit breakers
d. Adjustable trip circuit breakers
Copyright 2008 Ted "Smitty" Smith
• 2. b
Tbl. 430.52,Note 1
Copyright 2008 Ted "Smitty" Smith
• 3. Where sizes 1/0 AWG single
conductor cables are installed in ladder
type cable tray, the MAXIMUM
allowable rung spacing for the ladder
cable tray shall be _____.
a. 6 inches
b. 9 inches
c. 12 inches
d. 15 inches
Copyright 2008 Ted "Smitty" Smith
• 3. b
392.3(B)(1)(a)
Copyright 2008 Ted "Smitty" Smith
• 4. The NEC® requires the MAXIMUM
length permitted for a flexible cord
supplying a 208-volt, single-phase,
room air-conditioner to be ____.
a.
b.
c.
d.
4 feet
6 feet
8 feet
10 feet
Copyright 2008 Ted "Smitty" Smith
• 4. b
440.64
Copyright 2008 Ted "Smitty" Smith
• 5. In general, which of the following
receptacle outlets in a commercial kitchen
are required by the NEC® to be GFCI
protected?
a. All 125-volt, single phase, 15- and 20ampere rated receptacles.
b. All 125-volt, 15- or 20-ampere rated
receptacles in wet locations only.
c. All receptacle outlets.
d. All 125-volt countertop receptacle outlets
only.
Copyright 2008 Ted "Smitty" Smith
• 5. a
210.8(B)(2)
Copyright 2008 Ted "Smitty" Smith
• 6. All wiring installed in or under an
aircraft hanger floor shall comply
with the requirements for ______
locations.
a. Class I, Division 1
b. Class I, Division 2
c. Class II, Division 1
d. Class II, Division 2
Copyright 2008 Ted "Smitty" Smith
• 6. a
513.8(A)
Copyright 2008 Ted "Smitty" Smith
• 7. In general, branch-circuit conductors
supplying more than one motor shall have an
ampacity of a at least _____ percent of the
FLC of the largest motor, and 100 percent of
the FLC of the other motor(s) in the group.
a. 25
b. 80
c. 100
d. 125
Copyright 2008 Ted "Smitty" Smith
• 7. d
430.24
Copyright 2008 Ted "Smitty" Smith
• 8. What is the MINIMUM size equipment
grounding conductor required for a 5 HP,
three-phase, 208-volt motor having 20ampere rated overload protection and shortcircuit overcurrent protection rated at 30
amperes?
a. 10 AWG
b. 14 AWG
c. 12 AWG
d. 8 AWG
Copyright 2008 Ted "Smitty" Smith
• 8. a
Tbl. 250.122
Copyright 2008 Ted "Smitty" Smith
• 9. If a circuit breaker serves as the controller
for a motor, and the motor is not in sight of
the breaker, the NEC® requires which of the
following?
a. The motor to be less than 2 HP.
b. The breaker be able to be locked in the
open position.
c. The motor to be Code letter “E”.
d. The breaker to be rated 25,000 AIC.
Copyright 2008 Ted "Smitty" Smith
• 9. b
430.102(B)(2), Ex.
Copyright 2008 Ted "Smitty" Smith
• 10. In Class II, Division 1,
hazardous locations, an approved
method of connection of conduit to
boxes is _____.
a. Compression fittings
b. Threaded bosses
c. Welding
d. All of these
Copyright 2008 Ted "Smitty" Smith
• 10. b
502.10(A)(4)
Copyright 2008 Ted "Smitty" Smith
• 11. Given: an AC service is supplied with four
parallel kcmil aluminum conductors. What is the
MINIMUM size copper grounding electrode required,
when connected to the concrete-encased building
steel used as the grounding electrode system?
a.
b.
c.
d.
3/0 AWG
4/0 AWG
250 kcmil
2/0 AWG
Copyright 2008 Ted "Smitty" Smith
• 11. a Tbl. 250.66
500 kcmil X 4 conductors = 2000 kcmil
total
*NOTE: Aluminum service-entrance
conductors over 1750 kcmil require a
size 3/0 AWG copper grounding
electrode conductor.
Copyright 2008 Ted "Smitty" Smith
• 12. Given: an AC transformer arc welder has
a 50-ampere rated primary current and a 60
percent duty-cycle. Determine the MINIMUM
size copper 60°C rated conductors the
NEC® requires to supply this welder.
a. 6 AWG
b. 8 AWG
c. 10 AWG
d. 4 AWG
Copyright 2008 Ted "Smitty" Smith
• 12. b Tbl. 630.11(A)
•
Tbl. 310.16
• .78 (duty cycle) X 50 amperes (primary
current) = 39 amperes
• Tbl. 310.16 requires a size 8 AWG
conductor.
Copyright 2008 Ted "Smitty" Smith
• 13. When installing wiring for sensitive
electronic equipment, the MAXIMUM voltage
to ground is required to be ____ volts.
a.
b.
c.
d.
30
60
120
300
Copyright 2008 Ted "Smitty" Smith
• 13. b
647.1
Copyright 2008 Ted "Smitty" Smith
• 14. In a health care facility, a patient bed
location in a critical care area is required to
have which of the following?
a. Four single receptacles or two duplex
receptacles
b. Six single receptacles or three duplex
receptacles
c. Two duplex receptacles or four single
receptacles
d. Two single receptacles or one duplex
receptacle
Copyright 2008 Ted "Smitty" Smith
• 14. b
517.19(B)(1)&(2)
Copyright 2008 Ted "Smitty" Smith
• 15. Which of the following circuits is
prohibited for the grounded conductor to be
dependent on receptacle devices for
continuity?
a.
b.
c.
d.
All circuits
Multi-outlet circuits
GFCI protected circuits
Multi-wire circuits
Copyright 2008 Ted "Smitty" Smith
• 15. d
300.13(B)
Copyright 2008 Ted "Smitty" Smith
• 16. Where conduits enter a floor-standing
switchboard or panel-board at the bottom,
the conduits including their end fittings, shall
not rise more than _____ above the bottom
of the enclosure.
a.
b.
c.
d.
6 inches
4 inches
2 inches
3 inches
Copyright 2008 Ted "Smitty" Smith
• 16. d
408.5
Copyright 2008 Ted "Smitty" Smith
• 17. When installed on the service of a
building or structure, a type 2 SPD
(TVSS) shall be connected _____.
a. On the line side of the service
disconnect overcurrent device
b. On the load side of the service
disconnect overcurrent device
c. On the meter housing
d. At the final overcurrent device
Copyright 2008 Ted "Smitty" Smith
• 17.b
285.24(A)
Copyright 2008 Ted "Smitty" Smith
• 18. A detached garage supplied from a dwelling with
a three-wire feeder of size 4/0 AWG aluminum USE
cable with a 200-ampere rated circuit breaker for
overcurrent protection requires a MINIMUM size
copper grounding electrode to a concrete encased
electrode of _____ AWG.
a.
b.
c.
d.
8
6
4
2
Copyright 2008 Ted "Smitty" Smith
• 18. c
250.52(A)(3)
Copyright 2008 Ted "Smitty" Smith
• 19. When a raceway is run from the
interior to the exterior of a building, the
raceway shall _____.
a. Be rigid metal conduit (RMC)
b. Be rigid polyvinyl chloride conduit
(PVC)
c. Be sealed with an approved material
d. Have an explosion-proof seal
Copyright 2008 Ted "Smitty" Smith
• 19. c
300.7(A)
Copyright 2008 Ted "Smitty" Smith
• 20. A disconnecting means shall be
provided on the supply side of all fuses
in circuits having a voltage of at LEAST
______ volts to ground.
a.
b.
c.
d.
120
250
150
277
Copyright 2008 Ted "Smitty" Smith
• 20. c
240.40
Copyright 2008 Ted "Smitty" Smith
End of Drill
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question. Each question will
now be repeated without the
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review it and find the
answer.
• Clicking the left mouse
button will advance the slide
to the answer and the code
reference.
Copyright 2008 Ted "Smitty" Smith
• 1. Standard trade size 2-inch rigid
polyvinyl chloride conduit (PVC),
shall be supported at least every
_____.
a. 3 feet
b. 5 feet
c. 6 feet
d. 8 feet
Copyright 2008 Ted "Smitty" Smith
• 1. b
Tbl. 352.30
Copyright 2008 Ted "Smitty" Smith
• 2. When sizing time-delay Class CC
fuses for motor branch-circuit, shortcircuit, and ground-fault protection, they
are to be sized at the same value as
_____.
a. inverse-time circuit breakers
b. Non-time-delay fuses
c. Instantaneous trip circuit breakers
d. Adjustable trip circuit breakers
Copyright 2008 Ted "Smitty" Smith
• 2. b
Tbl. 430.52,Note 1
Copyright 2008 Ted "Smitty" Smith
• 3. Where sizes 1/0 AWG single
conductor cables are installed in ladder
type cable tray, the MAXIMUM
allowable rung spacing for the ladder
cable tray shall be _____.
a. 6 inches
b. 9 inches
c. 12 inches
d. 15 inches
Copyright 2008 Ted "Smitty" Smith
• 3. b
392.3(B)(1)(a)
Copyright 2008 Ted "Smitty" Smith
• 4. The NEC® requires the MAXIMUM
length permitted for a flexible cord
supplying a 208-volt, single-phase,
room air-conditioner to be ____.
a.
b.
c.
d.
4 feet
6 feet
8 feet
10 feet
Copyright 2008 Ted "Smitty" Smith
• 4. b
440.64
Copyright 2008 Ted "Smitty" Smith
• 5. In general, which of the following
receptacle outlets in a commercial kitchen
are required by the NEC® to be GFCI
protected?
a. All 125-volt, single phase, 15- and 20ampere rated receptacles.
b. All 125-volt, 15- or 20-ampere rated
receptacles in wet locations only.
c. All receptacle outlets.
d. All 125-volt countertop receptacle outlets
only.
Copyright 2008 Ted "Smitty" Smith
• 5. a
210.8(B)(2)
Copyright 2008 Ted "Smitty" Smith
• 6. All wiring installed in or under an
aircraft hanger floor shall comply
with the requirements for ______
locations.
a. Class I, Division 1
b. Class I, Division 2
c. Class II, Division 1
d. Class II, Division 2
Copyright 2008 Ted "Smitty" Smith
• 6. a
513.8(A)
Copyright 2008 Ted "Smitty" Smith
• 7. In general, branch-circuit conductors
supplying more than one motor shall have an
ampacity of a at least _____ percent of the
FLC of the largest motor, and 100 percent of
the FLC of the other motor(s) in the group.
a. 25
b. 80
c. 100
d. 125
Copyright 2008 Ted "Smitty" Smith
• 7. d
430.24
Copyright 2008 Ted "Smitty" Smith
• 8. What is the MINIMUM size equipment
grounding conductor required for a 5 HP,
three-phase, 208-volt motor having 20ampere rated overload protection and shortcircuit overcurrent protection rated at 30
amperes?
a. 10 AWG
b. 14 AWG
c. 12 AWG
d. 8 AWG
Copyright 2008 Ted "Smitty" Smith
• 8. a
Tbl. 250.122
Copyright 2008 Ted "Smitty" Smith
• 9. If a circuit breaker serves as the controller
for a motor, and the motor is not in sight of
the breaker, the NEC® requires which of the
following?
a. The motor to be less than 2 HP.
b. The breaker be able to be locked in the
open position.
c. The motor to be Code letter “E”.
d. The breaker to be rated 25,000 AIC.
Copyright 2008 Ted "Smitty" Smith
• 9. b
430.102(B)(2), Ex.
Copyright 2008 Ted "Smitty" Smith
• 10. In Class II, Division 1,
hazardous locations, an approved
method of connection of conduit to
boxes is _____.
a. Compression fittings
b. Threaded bosses
c. Welding
d. All of these
Copyright 2008 Ted "Smitty" Smith
• 10. b
502.10(A)(4)
Copyright 2008 Ted "Smitty" Smith
• 11. Given: an AC service is supplied with four
parallel kcmil aluminum conductors. What is the
MINIMUM size copper grounding electrode required,
when connected to the concrete-encased building
steel used as the grounding electrode system?
a.
b.
c.
d.
3/0 AWG
4/0 AWG
250 kcmil
2/0 AWG
Copyright 2008 Ted "Smitty" Smith
• 11. a Tbl. 250.66
500 kcmil X 4 conductors = 2000 kcmil
total
*NOTE: Aluminum service-entrance
conductors over 1750 kcmil require a
size 3/0 AWG copper grounding
electrode conductor.
Copyright 2008 Ted "Smitty" Smith
• 12. Given: an AC transformer arc welder has
a 50-ampere rated primary current and a 60
percent duty-cycle. Determine the MINIMUM
size copper 60°C rated conductors the
NEC® requires to supply this welder.
a. 6 AWG
b. 8 AWG
c. 10 AWG
d. 4 AWG
Copyright 2008 Ted "Smitty" Smith
• 12. b Tbl. 630.11(A)
•
Tbl. 310.16
• .78 (duty cycle) X 50 amperes (primary
current) = 39 amperes
• Tbl. 310.16 requires a size 8 AWG
conductor.
Copyright 2008 Ted "Smitty" Smith
• 13. When installing wiring for sensitive
electronic equipment, the MAXIMUM voltage
to ground is required to be ____ volts.
a.
b.
c.
d.
30
60
120
300
Copyright 2008 Ted "Smitty" Smith
• 13. b
647.1
Copyright 2008 Ted "Smitty" Smith
• 14. In a health care facility, a patient bed
location in a critical care area is required to
have which of the following?
a. Four single receptacles or two duplex
receptacles
b. Six single receptacles or three duplex
receptacles
c. Two duplex receptacles or four single
receptacles
d. Two single receptacles or one duplex
receptacle
Copyright 2008 Ted "Smitty" Smith
• 14. b
517.19(B)(1)&(2)
Copyright 2008 Ted "Smitty" Smith
• 15. Which of the following circuits is
prohibited for the grounded conductor to be
dependent on receptacle devices for
continuity?
a.
b.
c.
d.
All circuits
Multi-outlet circuits
GFCI protected circuits
Multi-wire circuits
Copyright 2008 Ted "Smitty" Smith
• 15. d
300.13(B)
Copyright 2008 Ted "Smitty" Smith
• 16. Where conduits enter a floor-standing
switchboard or panelboard at the bottom, the
conduits including their end fittings, shall not
rise more than _____ above the bottom of
the enclosure.
a.
b.
c.
d.
6 inches
4 inches
2 inches
3 inches
Copyright 2008 Ted "Smitty" Smith
• 16. d
408.5
Copyright 2008 Ted "Smitty" Smith
• 17. When installed on the service of a
building or structure, a type 2 SPD
(TVSS) shall be connected _____.
a. On the line side of the service
disconnect overcurrent device
b. On the load side of the service
disconnect overcurrent device
c. On the meter housing
d. At the final overcurrent device
Copyright 2008 Ted "Smitty" Smith
• 17.b
285.24(A)
Copyright 2008 Ted "Smitty" Smith
• 18. A detached garage supplied from a dwelling with
a three-wire feeder of size 4/0 AWG aluminum USE
cable with a 200-ampere rated circuit breaker for
overcurrent protection requires a MINIMUM size
copper grounding electrode to a concrete encased
electrode of _____ AWG.
a.
b.
c.
d.
8
6
4
2
Copyright 2008 Ted "Smitty" Smith
• 18. c
250.52(A)(3)
Copyright 2008 Ted "Smitty" Smith
• 19. When a raceway is run from the
interior to the exterior of a building, the
raceway shall _____.
a. Be rigid metal conduit (RMC)
b. Be rigid polyvinyl chloride conduit
(PVC)
c. Be sealed with an approved material
d. Have an explosion-proof seal
Copyright 2008 Ted "Smitty" Smith
• 19. c
300.7(A)
Copyright 2008 Ted "Smitty" Smith
• 20. A disconnecting means shall be
provided on the supply side of all fuses
in circuits having a voltage of at LEAST
______ volts to ground.
a.
b.
c.
d.
120
250
150
277
Copyright 2008 Ted "Smitty" Smith
• 20. c
240.40
Copyright 2008 Ted "Smitty" Smith