Electricity
Only wiring methods recognizes as ______ are included in the code.
B.suitable
Where exposed to the weather raceways shall be ____ and arranged to drain .
D. listed
A professional projector os a type of projector using 35- or 70- mm film that has a minimum width of ______ inches and has on each edge 5.4 perforations per inch, or a type using carbon arc,xenon or other light source equipment that develops hazardous gases dust or radiation.
A. 1⅜
What is the MINIMUM bend radius for 1 in . Diameter corrugated sheath MC cable?
A. 7 in.
may not be used in damp or wet locations
A. Ac amored cable
Which of the following wiring methods is permitted through an air conditioning duct?
A. Electrical metallic tubing
One 15-ampere rated single receptacle may be installed on a _______-ampere individual branch-circuits
A. I only
A factory assembled structure or structures transportable in one or more sections that are built on a permanent chassis and designed to be use as a dwelling without a permanent foundation where connected to the required utilities and that include the plumbing heating air conditioning and electrical systems contained therein.
A. Mobile home
A switch box installed in a tiled wall may be recessed ____ behind the finished wall.
A. ¼
Aerial conductors must be covered when theyx are withing ___ feet of building
A.10
Flexible cords______ AWG and larger are used to supply approved appliances and are considered protected from overcurrent by overcurrent devices
A.18
Branch circuits that supply other signs and outline lighting systems containing incandescent and fluorescent forms of illumination shall be rated not to exceed_ amperes
A.20
In an underground polyvinyl chloride conduit system that consists of a 20 ft between pulling points, what is the maximum number of bends that his run may have
A.4- 90deg
For systems that are not a separately derived and are not requeried to be grounded as specified in 250.30,see _____ for the minimum size of conductors that must carry fault current.
A.445.13
Supply cords for mobile homes shall be rated not less than ___ amperes.
A.50
A GFCI-protected locking- type, single grounding type receptacle that provides power to a pool recirculating pump motor shall be permitted not less than ____ feet from the inside wall of the swimming pool.
A.6
No receptacle shall ever be permitted to be installed within ____ feet of the inside walls of a pool.
A.6
A minimum of __% of all recreational vehicle sites with with electrical supply shall each be equipped with a 30 ampere 125 volt receptacle
A.70
Without exceptions the minimum size service lateral conductors allowed by the NEC is
A.8 AWG copper
Consider exception in health care facilities patient bed receptacles located in general care areas shall be supplied by at least two branch circuit these _____ permitted to originate from two separate transfers switches on the critical system.
A.are
The termination of the 8 AWG equipment grounding conductor in a permanently installed swimming pool forming shell shall be covered with or encapsulated in a listed_____ to protect the connection from the possible deteriorating effect of a pool water
A.potting compound
Where the branch circuit overcurrent device is used as the appliance disconnecting means, is the maximum allowable rating for a permanently connected appliance.
A.⅛hp
Storage swimming pools are those that are constructed on or above the ground and are capable of holding water to ______.
B. A maximum depth of a 42 inches
When installing polyvinyl chloride conduit,_____.
B. III only
Which one of the following locations is required to have electrical installations comply with the NEC ?
B. Marinas
Multiwire branch circuits shall supply ______.
B. Only line to neutral loads
Flexible cords and cables shall NOT be ____
B. Run throught holes in walls
Portable electric luminaires in class I locations ___ in a spray area during spray operations.
B. Shall not be used
. A ____is an assembly cable containing one male and two female cord connectors used to connect two loads to one branch circuit
B. Two Fer
A device intented to open under short circuit or ground fault is selected based on its _____ rating.
B. interrumping
Pool-associated motors shall be concocted to an equipment grounding conductor not smaller than ______ AWG.
B.12
Lighting systems operating at 30 volts or less shall be supplied from a maximum______-ampere branch circuit.
B.20
Voltage between the hot (ungrounded) conductors on Fcc cable shall not exceed ____ volts.
B.300
What size grounded conductor is required for a 200amp, 120/208 volt, three-phase service? The service conductor are 3/0 THWN/THHN
B.4 AWG
All cables installed in agricultural building shall be secured whiting ______ inches of each cabinet box or fitting.
B.8
Circuit breakers shall be marked with a voltage rating not Lee's than the nominal system voltage that is indicative of their capability to interrupt fault currents
B.I&II only
Non combustible surfaces that are broken or incomplete shall be repaired so there will be no gaps or open spaces greater than ____ inch at the edge of the fitting or box
B.⅛
carries the electric signals to the controller but does not carry main power.
C III only
according to Table 310.16,what size THHN conductor is required for a circuit rated 50A ?
C. 6AWG
The service equipment for floating docks or marinas shall be located ____ the floating structure.
C. Adjacent to
The code rules and provisions are enforced by ______.
C. Goverment bodies that exercise legal jurisdiction over electrical installations
A_____ is any building that is of closed construction and is made or assembled in manufacturing fácil on or off the building site for installation or for assembly and installation on the building site other than manufactured homes mobile homes park trailers, or recreational vehicles
C. Manufactured building
When conductors of different systems are installed in the same raceway one system grounded conductor shall be white or gray the other system grounded conductor shall be______.
C. White with and identifying colored striped that is not green
Underwater luminaires for swimming pools shall have GFCI preotection of they operate at a voltage greater than ______
C. the low volgate contact limit
The equipment grounding terminal buses of the normal and essetial branch-circuit panelboards serving the same individual patient care vicinity shall be connected together with an insulated continous copper conductor not smaller than_______ AWG.
C.10
In major repair garages lamps and lampholders for fixed lighting that is located over lanes through which vehicles are commonly driven shall be located not less than______ feet above the floor level.
C.12
consider exception the minimum size service lateral to limited loads of a single branch circuit is _____ AWG copper
C.12
10 AWG circuit conductors will be run from a 1 a-pole circuit breaker in a 120/140-volt 10 3-wire panelboard to a 14.1-amp '120-volt load . Can be lo ated a maximum of ______ feet from the panel. Use K= 10.98 and limit the voltage dropped in the circuit conductors to 3%
C.120
In each dwelling unit each small-appliance branch circuit shall be computed at no less than_____
C.1500
The entire floor area in a major repair garage up to level of _____ inches above the floor shall be considered a class I, division 2 location where calls I liquids or LPG are transferred
C.18
A single family residence is served with insulated 120/240 volt service-drop conductors supported with a grounded messenger wire from the utility company. This service drop crosses the pool and the pool has a dividing board that is 5 feet above the water level the minimum height above water level of the service drop as permitted by the NEC is ______ feet.
C.22½
For dip tanks and drain boards the space _____ feet above the floor and extending ____ horizontally in all directions from the class I division 1 location is considered a class I division 2 location.
C.3, 20
What's the maximum size overcurrent protection device that can be used to protect 500 kcmil conductors, where each conductor has an ampacity of 380 A at 75 degree C, in accordance with Table 310.16, and the calculated load is 370A?
C.400 A
What's the minimum size THHN conductors permitted to terminate on a 70A circuit breaker or fuse if the circuit breaker and equipment terminals are listed for 60 degree C conductor sizing
C.4AWG
According to table 310.16 what size THHN conductor is required for a 60A circuit where the the equipment is listed for use at 75 degrees C?
C.6AWG
Type____ cable is a factory assembly of one or more insulated circuit conductors enclosed in an armor of interlocking metal tape, or a smooth or corrugated metallic sheat.
C.MC
Two one ohm resistors are in parallel the total resistance ______.
C.is ½ ohm
When using BX (armored cable) it shall be secured within ______ of every junction box cabinet or outlet box.
D. 12
What's the ampacity of a 12 THHN conductor when installed in a location that has an ambient temperature of 50 degree F?
D. 34.50A
A code letter D is marked on a motor nameplate what is its locked rotor kVA per horsepower
D. 4.0 - 4.49
There is no time limit for temporary electrical power and lighting, except that it must he removed upon completion of______.
D. All of these
Which of the following wiring methods is/are approved for use as fixed wiring in an area above class i locations in a major repair garage ?
D. All of these
Intermediate metal conduit shall be permitted to be permitted to be installed in or under cinder fill when subject to permanent moisture and protected by_____.
D. Any of these
A____ is a building that floats on water is moored in a permanent location and has a premises wiring system served through connection by permanent wiring to an electrical supply system not located on the premises.
D. Floating building
A run of intermediate metal conduit shall not contain more than the equivalent of ____ quarter bends including offsets located immediately at pull points
D. Four
A continuous white or natural gray covering on a conductor shall be used only for the ____ conductor.
D. Grounded
A____ shall be used to connect the equipment grounding conductors the service equipment enclosures, and where the system is grounded the grounded service conductor to the grounding electrode.
D. Grounding electrode conductor
The term pool incluides swimming wading and therapeutic pools and the term fountaim incluides ______.
D. I, III&IV only
Every recreational vehicle site with electrical supply shall be equipped with at least_____ 20-amperes,125-volt receptacle
D. One
Terminals of motors and controllers shall be suitably marked or colored where necessary to indicate______.
D. The proper connection
Parking garages used for parking or storage are permitted to be ______ locations.
D. Unclassified
A.120-volt receptacle located at_____ feet from the inside wall of a swimming pool must be GFCI protected.
D. all of these
FCC systems. general-purpose and appliance branch-circuits have a maximum current rating of amperes, while individual branch-circuits have amperes.maximum current rating of amperes
D.. 20 - 30
Hermetic Refrigerant Motor-Compressor's branch circuit short circuit and ground fault protective device shall be capable of carrying _______% of the motor's starting current.
D.100
A 2400-volt lead-covered conductor can be bent to no less than _____ times its diameter.
D.12
Portable amusement rides and amusement attractions shall be maintained not less than ____ feet in any direction from overhead conductors operating at 600 volts or less except for the conductors supplying the amusement ride or attraction.
D.15
Switching devices shall be located at ______ horizontally from the inside walls of the pool
D.5'
A space within a location intended for the examination and treatment of patients extending ______ feet beyond the normal location of the patient bed chair table treadmill or other device that supports the patient during examination and treatment and extending vertically to ____ feet above the floor.
D.6. 7½
The value of branch circuit selection current will always be_____ the marked rated load current.
D.II or III only
To meet the definition for a bathroom the room must contain a basin and a______.
D.any of these
Branch circuits that supply neon tubing installations shall not be rated in excess of _____ amperes
E. 30
A 15 ampere duplex receptacle installed in a television audience seating area can be supplied by a ______ampere branch circuit
E. I only
A minimum of _______% of all recreational vehicle sites with electrical supply shall each be equipped with a 50-ampere 125/250-volt receptacle
E.20
For motion picture studios portable stage cables for stage set lighting shall be protected by means of overcurrent devices set at not more tha___% of the ampacity given in table 400.
E.400
In indoor pool areas ceiling suspended (paddle) fans shall not be installed above the pool or aver the area extending 5 feet horizontally from the inside walls of pool unless no part of the fan is less than _____ feet above the maximum water level where the branch circuit supplying the equipment is protected by a GFCI.
E.7½
An attachment plug cap mates with a____.
Receptacle
