Download reference: national electric code: article 200-6

1.
The National Electric Code is published by the:
A. National Electric Council
B. National Fire Protection Association
C. Underwriters Laboratory
D. AAVIM
REFERENCE:
AGRICULTURAL WIRING HANDBOOK:
12TH EDITION:
SECTION 2 - GENERAL REQUIREMENTS
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State FFA/GEMC
January 20, 2001
2.
According to NEC Article 547-4 all cables installed in agricultural buildings shall be
secured within how many inches of the cabinet, box or fitting?
A. 8 inches
B. 10 inches
C. 12 inches
D. 16 inches
REFERENCE:
AGRICULTURAL WIRING HANDBOOK:
12 EDITION: SECTION 31
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January 20, 2001
3.
According to NEC Article 547-9(c) all 125 volt, single -phase, 15 and 20 amp general
purpose receptacles in areas having an equipotential plane shall have what kind of
protection for personnel?
A.
Insurance
B.
Circuit Breaker
C.
Fuse
D.
GFCI
REFERENCE:
AGRICULTURAL WIRING HANDBOOK:
12TH EDITION:
SECTION 31
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State FFA/GEMC
January 20, 2001
4.
Using table 5 determine the value (I²R) of current lost yearly for a 200 ft run of
No. 12AWG copper, based on a 20 amp load operating for 500 hours of use at
8¢ per kWh?
A.
$2.40
B.
$14.40
C.
$10.24
D.
$ 0.84
REFERENCE: AGRICULTURAL WIRING HANDBOOK:
12TH EDITION:
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State FFA/GEMC
January 20, 2001
PAGE 79
5.
The branch circuit conductors to an individual motor should be selected on the basis of
carrying 125% of the full-load motor current (NEC 430-22). Using table 8 Agricultural
wiring Handbook (page 81), determine the load in amps for a 230 volt, 1/2 horsepower,
single-phase motor and then refer to table 16(page 88) to determine the proper size
Triplex copper conductor needed to run the load 125 feet overhead in air from the Service
Entrance Panel with a maximum 2% voltage drop.
A. 9.3 AMPS - 12 AWG
B. 9.3 AMPS - 8 AWG
C. 6.1 AMPS - 12 AWG
D. 6.1 AMPS - 8 AWG
REFERENCE:
AGRICULTURAL WIRING HANDBOOK:
12TH EDITION:
TABLE 8 - PAGE 81 & TABLE 16 - PAGE 88
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State FFA/GEMC
January 20, 2001
6.
The Rural Electrification Administration (REA), now called the
is a federal agency in the U.S. Department of Agriculture, which provides loans
and technical assistance to commercial, municipal and cooperative power companies
provided they meet certain criteria.
A. National Rural Electric Cooperative Association
B. Rural Utilities Services
C. Southeastern Power Administration
D. United Power Services
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January 20, 2001
7.
Which type of cable may be used as a feeder cable for a 120/240 volt feeder circuit?
A. “A” only
B. “B” only
C. Both “A” and “B” may be used
D. Neither “A” nor “B” may be used
REFERENCE:
1999 NATIONAL ELECTRICAL CODE: ARTICLE 338-3
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January 20, 2001
8.
When wiring three-way and four-way switches,
A. The three-way switches must switch only the ungrounded conductor, but the
four-way switch may switch the grounded conductor.
B. The three-way switches may switch the grounded conductor, but the four-way
switch must switch only the ungrounded conductor.
C. The three-way switches and the four-way switch may switch either the
ungrounded conductor or the grounded conductor.
D. The three-way switches and the four-way switch must switch only the
ungrounded conductor.
REFERENCE:
1999 NATIONAL ELECTRICAL CODE: ARTICLE 380-2
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January 20, 2001
9.
According to Article 250-104 of the 1999 National Electrical Code, the interior metal
piping system in a building must be bonded to the electrical system. If this aluminum
service entrance cable is used to supply the service entrance panel for the building, the
minimum size copper conductor that can be used to bond the piping system is _______.
A. No. 2
B. No. 4
C. No. 6
D. No. 8
REFERENCE:
1999 NATIONAL ELECTRICAL CODE: ARTICLE 250-104
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State FFA/GEMC
January 20, 2001
10.
Farmer Jones has a Long Bulk Tobacco Barn he wants to supply current from the service
entrance panel in his farm shop. The tobacco barn is located 150 feet from the electrical
panel. The tobacco barn has a 10 hp, 230 volt motor, what size overcurrent protection
and aluminum conductor would be needed to supply current to the tobacco barn for
125 % of the full load?
A. 50 amps and Number 1 Conductor
B. 60 amps and Number 1/0 Conductor
C. 70 amps and Number 1 Conductor
D. 70 amps and Number 1/0 Conductor
REFERENCE:
AGRICULTURE WIRING HANDBOOK: TABLE 8 AND TABLE 17
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State FFA/GEMC
January 20, 2001
11.
Georgia’s 42 Electric Membership Corporations covers 73 percent of Georgia’s land area
in
of 159 counties.
A. 153
B. 155
C. 157
D. 159
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January 20, 2001
12.
Assume that you have a new storage building in which you are planning to install two
circuits. Both circuits will be installed using No. 12 copper NM cable. To help you save
money, your neighbor has given you a 60 ampere fuse panel to use as the main
disconnect for the building. Which fuse(s) may be used as the overcurrent protection for
the circuits?
A. “A” only
B. “B” only
C. “C” only
D. “A” or “B” may be used
REFERENCE:
1999 NATIONAL ELECTRICAL CODE: ARTICLE 240-52;
TABLE 310-16
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State FFA/GEMC
January 20, 2001
13.
Which type(s) of cable(s) may be used in a barn that houses livestock?
A. NM cable
B. Aluminum SE cable
C. UF cable
D. All of the above
REFERENCE:
1999 NATIONAL ELECTRICAL CODE: ARTICLE 547-4
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State FFA/GEMC
January 20, 2001
14.
The National Electrical Code specifies that receptacles in certain areas of a house must
have ground fault circuit interrupter protection for personnel. In an older home, existing
receptacles in these specified areas may not have GFCI protection. If one of these
existing receptacles must be replaced, the replacement receptacle
.
A. must be a grounding type receptacle
B. must be the same type of receptacle as the receptacle being replaced
C. must have ground fault circuit interrupter protection
D. must not be a grounding type or GFCI receptacle
REFERENCE:
1999 NATIONAL ELECTRICAL CODE: ARTICLE 210-7
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January 20, 2001
15.
Which of the following is true about the ground fault circuit interrupter installed in this
panel?
A. The GFCI is properly wired.
B. The grounded conductor of the circuit is properly connected to the GFCI.
C. The ungrounded conductor of the circuit is properly connected to the GFCI.
D. The grounded conductor and the ungrounded conductor are reversed on the
GFCI.
REFERENCE:
AAVIM: ELECTRICAL WIRING, CHAPTER 14
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January 20, 2001
16.
Mr. Collins is preparing to install a service panel in his house and has a roll of this type
conductor he wants to use. What is the largest size service panel he could install using
this size conductor?
A. 175 amps
B. 200 amps
C. 225 amps
D. 250 amps
REFERENCE:
1999 NATIONAL ELECTRICAL CODE: ARTICLE 310-15
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January 20, 2001
17.
Who owns the 42 EMC’s in Georgia?
A. Georgia Electric Membership Corporation
B. Georgia Power Company
C. Local EMC Board of Directors
D. The people they serve
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January 20, 2001
18.
What is the minimum working clearance for a circuit 120 volts to ground nominal
voltage, exposed live parts on one side, and no live or grounded parts on the other side of
the working space?
A. 3 feet
B. 3 ½ feet
C. 4 feet
D. 6 feet
REFERENCE:
NATIONAL ELECTRIC CODE: ARTICLE 110-26
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January 20, 2001
19.
An insulated grounded conductor of No.
or smaller shall be identified by a
continuous white or natural gray outer finish along its entire length.
A. 3
B. 4
C. 6
D. 8
REFERENCE:
NATIONAL ELECTRIC CODE: ARTICLE 200-6
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State FFA/GEMC
January 20, 2001
20.
Service conductors supplying one building shall not
building.
A. be installed on the exterior walls
B. pass through the interior
C. both “A” and “B”
D. none of the above
REFERENCE:
NATIONAL ELECTRIC CODE: ARTICLE 230-3
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State FFA/GEMC
January 20, 2001
of another
21.
Bonding shall be provided where necessary to
.
A. ensure electrical continuity and the capacity to conduct safely any fault current
likely to be imposed
B. provide an equipment grounding means for all nonservice related, general use
equipment
C. please the authority having jurisdiction
D. all of the above
REFERENCE:
NATIONAL ELECTRIC CODE: ARTICLE 250-90
ARTICLE 250-96
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State FFA/GEMC
January 20, 2001
22.
Which of the splices shown on the conductors at this station is made correctly according
to acceptable safe wiring practices, correct sizing of connectors, and NEC requirements?
A.
B.
C.
D.
REFERENCE:
AAVIM: ELECTRICAL WIRING:
SEVENTH EDITION:
CHAPTER 6 SPLICING CONDUCTORS & CONNECTOR
INFORMATION
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January 20, 2001
23.
Where installing direct buried cables, a
that terminates underground.
shall be used at the end of a conduit
A. connector
B. bushing
C. weatherproof coupling
D. rubber tape
REFERENCE:
NATIONAL ELECTRIC CODE: ARTICLE 300-5
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State FFA/GEMC
January 20, 2001
24.
Georgia EMC’s have formed the nations largest generation and transmission cooperative
to better serve its customers. This cooperative is called:
.
A. Georgia Electric Light Association
B. Georgia Electric Membership Corporation
C. Georgia Rural Utilities Service
D. Oglethorpe Power Corporation
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State FFA/GEMC
January 20, 2001
25.
The main disconnect for an electrically driven center pivot irrigation system must be at
the machine, or shall be visible and no more than ______ feet from the machine and
capable of being locked in the open position.
A. 10
B. 25
C. 50
D. 100
REFERENCE:
NATIONAL ELECTRIC CODE: ARTICLE 675, SECTION 8b
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State FFA/GEMC
January 20, 2001
26.
All conductors must be
the Code.
except where specifically permitted elsewhere in
A. bare
B. insulated
C. covered
D. jacketed
REFERENCE:
NATIONAL ELECTRIC CODE: ARTICLE 310-2
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State FFA/GEMC
January 20, 2001
27.
Standby generating equipment is installed to serve a poultry building at times when
electrical power to the building is interrupted. If the generating equipment is operating,
the generator can feed power back into the power company’s lines, thus endangering the
lives of persons working on the lines. To prevent the generator from feeding power back
into the power company’s lines,
.
A. an automatic start switch for the generator must be installed
B. a double throw transfer switch must be installed
C. a manual start switch for the generator must be installed
D. another service entrance panel must be installed in the building
REFERENCE:
AGRICULTURAL WIRING HANDBOOK:
SECTION 22
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January 20, 2001
28.
A unit of mechanical power equals to 746 watts of electrical power is:
A. One foot pound
B. One kilowatt
C. One horsepower
D. One newton meter
REFERENCE:
AGRICULTURAL WIRING HANDBOOK:
PART 1, SECTION 1
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State FFA/GEMC
January 20, 2001
29.
There are
Electric Membership Corporations in Georgia.
A. 157
B. 47
C. 42
D. 32
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January 20, 2001
30.
Mr. Jones is constructing a new nursery for weaning his baby pigs. The nursery will have
12 pens in which he plans to install two infrared heat lamps, which are rated 250 watts
each. If he runs each circuit 60 feet using THWN cable, what size copper conductor must
he use for the 115 volt circuit serving six heat lamps, if voltage is to be kept at 2% or
less?
A. Number 14 Conductor
B. Number 12 Conductor
C. Number 10 Conductor
D. Number 8 Conductor
REFERENCE:
AGRICULTURAL WIRING HANDBOOK:
SECTION 6 AND
SECTION 34, TABLE 10
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State FFA/GEMC
January 20, 2001