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WorksheetsPRACTICE
Total questions: 50
Worksheet time: 17mins
1. The term pool includes swimming, and wading therapeutic pools and the term fountain includes
.
I. Ornamental pools
II. Drinking fountains
III. Display pools
IV. Reflection pools
I and II only
II and III only
III and IV only
I, II and IV only
1. Where the overcurrent device is rated over amperes, the ampacity of the conductors it protects shall be equal to or greater than the rating of the overcurrent device.
100
800
200
500
1. When derating the ampacity of multiconductor cables to be installed in cable tray, the ampacity duration shall be based on .
I. the total number of current carrying conductors in the cable tray
II. the total number of current carrying conductors in the cable
I ONLY
II ONLY
BOTH
NEITHER
1. Where necessary to prevent , an automatic overcurrent device protecting service conductors supplying only specific load, such as water heater, shall be permitted to be locked or sealed where located so as to be accessible
tripping
tampering
Heat build Up
corrosion
Several motors, each not exceeding 1 HP in rating, shall be permitted on a nominal 120 V branch circuit protected at not over amperes.
5
10
15
20
Flexible cords shall be secured to the undersides of showcases so that .
I. The free lead at the end of the group of showcases will have a female fitting not exceeding beyond the case
II. Wiring will not be exposed to mechanical damage
III. A separation between cases not in excess of 2”, nor more than 12” between the first case and the supply receptacle will be assured
i only
ii only
iii only
Both i, ii and iii
All heating elements that are , and part of an appliance shall be legibly marked with the ratings in volts and amperes, or in volts and watts, or with the manufacturer’s part number.
I. Replaceable in the field II. rated over one ampere III. over 150 volts
II and III only
I and II
III only
I, II and III
A single 1500w cord and plug connected load on 120v would draw amps, this requires a number wire and circuit breaker for the branch circuit.
10.5 - #2.0 sq mm – 15amp
8 - #2.0 sq mm– 15amp
. 12.5 - #2.0 sq mm– 15amp
12.5 - #3.5 sq mm – 20
SE cable used to supply shall not be subject to conductor temperatures in excess of the temperature specified for the type of insulation involved.
appliances
lighting
motors
generators
Type FCC cable wiring system is designed for installations under .
Tile
carpet
concrete
carpet squares
The maximum number of overcurrent devices that may be installed in a lighting panel is ______
42
21
24
35
Any motor application shall be considered as unless the nature of the apparatus it drives is such that the motor will not operate continuously with the load under any condition of use.
varying duty
short time duty
periodic
continuous duty
It is the intent of the code that wiring or the construction of equipment need not be inspected at the time of installation of the equipment, if the equipment has been listed by a qualified electrical testing laboratory.
underground
factory-installed
Factory-installed internal
Raceway
An international term to define a complete lighting unit consisting of a lamp or lamps together with the parts designed to distribute the light, to position and protect the lamps, and to connect the lamps to the power supply is a
luminaire
class I, division II light fixture
class I, division I light fixture
intrinsically safe light fixture
1. The parallel conductors in each phase or neutral shall .
I. Have the same insulation type and conductor material
II. Be the same size in CMA
III. Be the same length and be terminated at the same manner
II ONLY
I AND II
I, II AND III
I AND III
1. In a recreational vehicle park, tent sites equipped with only 20 ampere supply facilities shall be calculated on the basis of _ per site.
600 VA
360 VA
450 VA
220 VA
No grounded interior wiring shall be electrically connected to a supply system unless the supply system contains a corresponding conductor which is .
Grounded
Shielded
Bonded
Ungrounded
A metal underground water pipe is used as a grounding electrode and used to bond other electrodes together. The grounding electrode conductor is connected to the water pipe on the interior of the building. The connection of the grounding conductor to the interior waterpipe shall be made a maximum of meter(s) from the point where the water pipe enters the building.
1
1.5
2
2.5
1. General - use snap switch suitable only for use on alternating – current circuits for controlling
.
I. Resistive and inductive loads not exceeding the ampere rating of the switch
II. Tungsten – filament lamp loads not exceeding the ampere rating of the switch
III. Motor loads no exceeding 80% of the ampere rating of the switch
I
I, II, III
II AND III
II
Open motors with commutators shall be located so sparks cannot reach adjacent combustible material, but this .
Does not prohibit these motors from Class I locations
Is only required for over 600 volts
Shall not prohibit these motors on wooden floors
None of The Above
An overcurrent trip unit of a circuit shall be connected in series with each .
ungrounded conductor
grounded conductor
overcurrent device
transformer
1. Means shall be provided to disconnect the of the fixed electric space heating equipment from all undergrounded conductors.
I. Heater
II. Motor
III. Controller
IV. Supplementary overcurrent protective devices
I AND III
I, II AND III
I AND IV
I
Where AC system operating at less than volts is grounded at any point, the grounded conductor shall be run to each service
300
1000
4000
1430
A/an shall be used to connect the grounding terminal of a grounding type receptacle to a grounded box.
neutral conductor
equipment bonding jumper
branch circuit
bonding jumper main
1. A bonding jumper shall be used to connect the equipment grounding conductors of the derived system to the grounded conductor. This connection shall be made .
I. at any point on the separately derived system from the source to the first system disconnect
II. at any point on the separately derived system from the source to the first overcurrent device
III. at the source if the system has no disconnecting means or overcurrent device
I, II AND III
I AND III
II AND III
I ONLY
In computing the load of fluorescent fixtures, the computation shall be based on the of the fixture.
Wattage of the ballast
wattage of the lamps
total ampere rating
none of these
1. Fuses shall be plainly marked with .
I. ampere rating II. Voltage rating
III. Interrupting rating where other than 10,000 amperes
I ONLY
II ONLY
III ONLY
I, II AND III
The ampacities provided by this section are based on temperature alone and do not take____ into consideration.
Insulation
AWG
WGA
Voltage Drop
A fixed electric space heater without a motor is installed in a multi-family dwelling. The heater has no supplementary overcurrent protection. The heater is controlled with a thermostat which does not have a marked “off” position. The branch circuit switch or circuit breaker is not within sight from the heater. For the branch circuit switch or circuit breaker to be permitted to serve as the disconnecting means for the heater, the switch or the breaker must .
be located within the dwelling unit or in the same floor as the heater
be capable of being locked in the open position
be readily accessible
not control lamps or other appliances
Where GFCI protection is located in the power supply cord for an outdoor portable sign, the GFCI shall be located within inches of the attachment plug.
150 mm
300 mm
1000 mm
200 mm
All conductors on a multi wire branch circuit shall originate from the same .
Feeder
Service
Panelboard
receptacle
Which of the following is true concerning type NM cable?
It may be fished in air voids in masonry block or tile walls
it may be covered with a plaster, adobe, or similar finish
It may be installed where exposed to corrosive fumes
It may be embedded in masonry, concrete, or plaster
A three – wire, 240/120v single – phase 200 amp service for a dwelling requires what size THW copper conductors?
80 sq mm
90 sq mm
100 sq mm
20 sq mm
The grounded conductor of a Mineral Insulated, metal sheathed cable shall be identified at the time of installation by marking at its termination.
distinctive
neutral
solid
coiled
In dwelling units and guest rooms of hotels and motels overcurrent devices shall not be located in
hallways
bathrooms
bedrooms
kitchen
All splices, joints and free ends of conductors are required to be covered with an insulation the conductor.
equivalent
as thick as
thicker
larger than
A multiwire branch – circuit may supply .
120/240v to only one utilization equipment
120/240v where all undergrounded conductors are opened simultaneously
Both (a) and (b)
Neither (a) nor (b)
Which of the following is not required on a motor nameplate?
watts
Hp
Voltage
manufacturer’s identification
Appliances fastened in place, connected to branch circuits with other load shall not exceed percent of the branch circuit rating.
70
80
90
100
Multioutlet assembly may be used .
Where concealed
in storage battery room
dry location
in hoistways
1. The following pool equipment shall be grounded .
I. GFCI
II. Transformer enclosures
III. Electric equipment located within 5 feet of the inside wall of the pool
i
ii
i and ii
i, ii and iii
1. of insulating material shall be permitted to be used without boxes in exposed cable wiring.
I. switch device II. Outlet devices III. Tap devices
I
II
I AND III
I, II AND III
The rating of an overcurrent device for a capacitor shall be .
not over 20amp
as low as practicable
less than 50 amp
less than 80 amp
The adjustable speed drive incoming branch circuit or to power conversion equipment included as a part of an adjustable speed drive system shall be based on the rated input to the power conversion equipment.
service
feeder
lateral
ground
Open conductors shall be supported on glass or porcelain – knobs .
I. Strain insulators II. Brackets III. Racks
i
ii
i and iii
i, ii and iii
Torque motors are rated for operation .
at full torque
at FLC
at standstill
at anything
The definition of a bathroom is an area including a with one or more of the following: a toilet, a tub, or a shower.
basin
spa
glass door
window
Conductors shall not be installed in locations where the operating temperature will exceed that specified for the type of used.
Connectors
protection
insulation
wiring
Permanent ladders or stairways shall provided to give safe access to the working space around electric equipment over 600 volts installed on or in attic or roof rooms or spaces.
I. Balconies II. mezzanine floors III. platforms
I
II AND III
II
I, II AND III
Where a service mast is for the support of service drop conductors, it shall be of adequate strength or be supported by .
Studs
braces or guys
rigid conduit
beams
