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Question 1 of 100
In a Motor Fuel Dispensing Facility, underground wiring shall be installed in threaded rigid metal conduit or ______________.
Question 2 of 100
Ground clamps or other fittings exposed to physical damage shall be enclosed in _________.
Question 3 of 100
A 3000 square foot retail store has 30 ft of show windows. There are a total of 100 duplex receptacles and the service is 120/240V, single-phase 3-wire. Calculate the minimum size overcurrent protection for the service.
Question 4 of 100
For a solidly grounded wye service the ground fault protection system shall operate to cause the service disconnect to open all ungrounded conductors of the fault circuit. The maximum setting of the ground-fault protection shall be____________________ amperes, and the maximum time delay shall be one second for ground-fault currents equal to or greater than _________________________ amperes.
Question 5 of 100
In a commercial garage, where an EV charging cord is suspended from overhead, it shall be arranged so that the lowest point of sag is at least __________ above the floor.
Question 6 of 100
Conductor ampacity for Alternating Current adjustable voltage motors shall be based on the __________ marked on the motor nameplate.
Question 7 of 100
In an ungrounded 240-volt 3-phase system, an equipment grounding conductor shall be installed with the supply conductors and be connected to the building or structure disconnecting means and to the grounding electrode(s). The grounding electrode(s) shall also be connected to ___________________.
Question 8 of 100
Where __________________transfer equipment is used, an optional standby system shall have adequate capacity and rating for the supply of all equipment intended to be operated at one time.
Question 9 of 100
A disconnecting means shall be provided for all ____________ derived from a stationary battery system with a voltage over 60-volts DC.
Question 10 of 100
Fire-resistive cable system cables and conductors shall be surface marked with the suffix ____________.
Question 11 of 100
An installation consists of 15 electric ranges, each rated at 12 kW. According to Table 220.55, what is the maximum demand load for this installation?
Question 12 of 100
In a patient Care Area, metal enclosures containing a receptacle must be connected to a(n) ___________.
Question 13 of 100
Metal Cable tray can be used as an equipment grounding conductor where _______________________.
Question 14 of 100
Where buried in masonry or concrete, threadless couplings shall be ____________________.
Question 15 of 100
In Cellular Metal Floor Raceways, junction boxes used with these raceways shall be of metal and shall be __________________.
Question 16 of 100
A single-phase motor is using a a Dual Element (Time-Delay) Fuse as it’s short-circuit and ground-fault protection means. This Dual Element fuse’s rating must not-exceed ____________ of the motor’s Full-Load Current.
Question 17 of 100
What is the minimum size Flexible Metal Conduit ( FMC) that can be used to house the following conductors: (1) 1AWG THHN
Question 18 of 100
What is the minimum size RHW copper tap conductor required to supply a 50A load, if the tap is 9ft from the load.
Question 19 of 100
Transformers who’s disconnecting means are located in a remote location, shall be __________.
Question 20 of 100
_________________ is NOT permitted to be installed in ducts specifically fabricated to transport environmental air.
Question 21 of 100
The Full-Load Current (FLC) of a 100-HP 500 volt DC motor is __________________.
Question 22 of 100
spray paint equipment within the classified areas of membrane enclosures during spray painting, shall be __________.
Question 23 of 100
Where more than one piece of X-Ray equipment is operated from the same high-voltage circuit, each piece or each group of equipment as a unit shall be provided with a(n) __________________________.
Question 24 of 100
For a storage warehouse, what portion of the lighting load does a 50% demand factor apply to?
Question 25 of 100
At a high school, the general lighting load shall be calculated at __________ VA per square foot.
Question 26 of 100
The minimum cover for a 2″ Rigid Nonmetallic Conduit approved for direct burial under an airport runway is ________________.
Question 27 of 100
The full-load current of a 3-phase 230V, 5HP AC wound-rotor motor is _________________.
Question 28 of 100
Electrical wiring for lighting, where installed inside of tents and concessions, shall be securely installed and, where subject to physical damage, shall be provided with ________________________.
Question 29 of 100
A dead end of a busway shall be ____________________________.
Question 30 of 100
If FMC is used to connect equipment where flexibility is necessary to minimize the transmission of vibration from equipment or to provide flexibility for equipment that requires movement after installation, a(n) __________ shall be installed.
Question 31 of 100
Fire alarm circuits shall be identified _____________ in a manner that helps prevent unintentional signals on firealarm system circuit(s) during testing and servicing of other systems.
Question 32 of 100
Where installed for the reduction of electromagnetic interference on the equipment grounding conductor, an isolated ground receptacle’s grounding terminal shall be connected to a(n) __________ run with the circuit conductors.
Question 33 of 100
All 15- and 20- ampere, 125 and 250-volt nonlocking-type receptacles in childcare facilities shall be listed tamper resistant receptacles, except in which of the following instances:
Question 34 of 100
The ampacity of electric pool water heaters shall not be less than _______________ of the total nameplate rated load.
Question 35 of 100
What is the maximum allowed 1/0 AWG THHN conductors that can fit in a 1 1/2″ EMT conduit?
Question 36 of 100
Which of the following outdoor enclosure types are approved for wind-blown dust applications?
Question 37 of 100
A conductor installed on the supply side of a service that ensures the required electrical conductivity between metal parts required to be electrically connected is a:
Question 38 of 100
The width of working space in front of electrical equipment shall be the width of the equipment or _______________ inches, whichever is greater
Question 39 of 100
Underground raceways and cable assemblies entering a hand-hole enclosure shall extend into the enclosure, but they shall not be required to be _______________ to the enclosure.
Question 40 of 100
Exposed structural metal that is interconnected to form a metal building frame and is not intentionally grounded or bonded and is likely to become energized shall be bonded to a(n) _______________.
Question 41 of 100
For cord-connected equipment a separable connector or a(n) _______________ shall be permitted to serve as thedisconnecting means.
Question 42 of 100
Switches or circuit breakers _______________ disconnect the grounded conductor of a circuit where all circuit conductors are not disconnected simltaneously.
Question 43 of 100
An intersystem bonding termination for connecting intersystem bonding conductors shall be provided_______________enclosures at the service equipment or metering equipment enclosure and at the disconnecting means for any additional buildings or structures.
Question 44 of 100
Splicing of the wire-type grounding electrode conductor shall be permitted only by __________ listed as grounding and bonding equipment or by the exothermic welding process.
Question 45 of 100
In damp or wet locations, surface-type meter sockets shall be mounted so as to prevent moisture or water from entering and accumulating within the cabinet or cutout box, and shall be mounted so there is at least _______________ inch(es) of airspace between the enclosure and the wall or other supporting surface.
Question 46 of 100
A device that, by insertion in a receptacle, establishes a connection between the conductors of the attached flexible cord and the conductors connected permanently to the receptacle is a(n):
Question 47 of 100
GFCI protection for personnel shall be installed in the branch circuit supplying underwater luminaires operating at _______________.
Question 48 of 100
An incandescent lamp for general use on lighting branch circuits shall not be equipped with a mogul base if rated over _______________ watts.
Question 49 of 100
The total rating of utilization equipment fastened in place, other than luminaires, shall not exceed __________ of the branch-circuit ampere rating where lighting units, cord-and-plug-connected utilization equipment not fastened in place, or both, are also supplied.
Question 50 of 100
Ceiling outlets, where used exclusively for lighting, shall be required to support a luminaire weighing a minimum of _______________ lb.
Question 51 of 100
Type SE cable shall be permitted for use where the insulated conductors are used for circuit wiring and the uninsulated conductor is used only for _______________ purposes.
Question 52 of 100
A 1/0 copper grounding electrode conductor is used for what size ungrounded service- entrance conductors?
Question 53 of 100
In grounded systems the earth _______________ considered as an effective ground-fault current path.
Question 54 of 100
Which of the following list all standard ampere ratings for fuses and inverse time circuit breakers?
Question 55 of 100
An insulated grounded conductor of 4 AWG or larger shall be identified by which one of the following means:
Question 56 of 100
The rating of any one cord-and-plug-connected utilization equipment not fastened in place shall not exceed _______________ percent of the branch-circuit ampere rating.
Question 57 of 100
FMC shall not be used _______________.
Question 58 of 100
In _______________ locations a flush-mounted switch or circuit breaker shall be equipped with a weather-proof cover.
Question 59 of 100
A 4″ x 2 1/8″ x 2 1/8″ metal square box, with no devices or clamps installed, shall be allowed to have a maximum of _______________12 AWG conductors.
Question 60 of 100
Exposed, normally non-current-carrying metal parts of fixed equipment supplied by or enclosing conductors or components that are likely to become energized shall be connected to an equipment grounding conductor under which of the following conditions:
Question 61 of 100
An incandescent lamp for general use on lighting branch circuits shall not be equipped with a medium base if rating over __________ watts.
Question 62 of 100
The branch-circuit conductors for fixed electric space-heating equipment and any associated motors shall be sized not smaller than __________ of the load.
Question 63 of 100
Overhead service conductors, where the voltage does not exceed 150 volts to ground, shall have a minimum clearance of __________ feet from final grade above pedestrian sidewalks.
Question 64 of 100
For enclosures in wet locations, raceways entering above the level of uninsulated live parts shall use fittings listed for _______________.
Question 65 of 100
Type NM and Type NMC cables shall be permitted to be used in _______________.
Question 66 of 100
In a bathroom where receptacles are installed within 6 feet from the top inside edge of the _______________, they must be GFCI protected.
Question 67 of 100
Where connected to a branch circuit supplying two or more receptacles or outlets, a 30A receptacle shall not supply a total cord-and-plug connected load in excess of:
Question 68 of 100
A branch-circuit OCPD is a device capable of providing protection for service, feeder, and branch circuits and equipment over the full range of over-currents between its _______________ and its interrupting rating.
Question 69 of 100
Where a branch circuit supplies continuous loads or any combination of continous and non-continous loads, the rating of the overcurrent device shall not be less than the non-continous load plus _______________ percent of the continuous load.
Question 70 of 100
The conductor between the surge arrester and the line, and the surge arrester and the grounding connection shall not be smaller than _______________.
Question 71 of 100
Electrical wiring installed in rigid metal conduit (RMC) that is below the surface of a Class I, Division 1 location shall be sealed within _______________ feet of the point of emergence above grade.
Question 72 of 100
Determine the motor overload protection for a 25HP, 460V, 3-phase, squirrel-cage motor who’s nameplate lists: 32 FLA, Design B, and Service Factor 1.15.
Question 73 of 100
A 75 kVA 3-phase 480V transformer is fed from a 3-phase 200A fused disconnect. The transformer secondary feeds a 3-phase 120/208V panel less than 25 feet away from the transformer. Size the primary overcurrent protective device that must be installed at this panel, assuming no secondary overcurrent protection will be used.
Question 74 of 100
What is the minimum size equipment grounding conductor required for a feeder consisting of (2) 250kcmil THWN-2 conductors protected by a 250A OCPD?
Question 75 of 100
Intrinsically safe circuit conductors in grounded metal-sheathed cables shall _______________.
Question 76 of 100
If the generator is installed as a nonseparately derived system, and overcurrent protection is not integral with the generator assembly, a(n) _______________ shall be installed between the generator equipment grounding terminal and the equipment grounding terminal of the disconnecting mean(s).
Question 77 of 100
Open outside branch circuit conductors shall be separated from open conductors of other circuits or systems by not less than:
Question 78 of 100
All electrically conductive objects that convey flammable or combustible liquids in spray applications _______________.
Question 79 of 100
A(n) _______________ shall be permitted to be used in lieu of a box at the end of a rigid metal conduit where the raceway terminates at unenclosed controls or equipment.
Question 80 of 100
Lamps located in cellulose nitrate film vaults shall be installed in rigid luminaires of the _______________ type.
Question 81 of 100
A generator is fed with 250 kcmil copper ungrounded conductors. This generator shall have what sized minimum system bonding jumper?
Question 82 of 100
For field installed neon secondary conductors over 1000 volts, the length of the secondary circuit conductors from the transformer leads to the first neon tubing electrode shall not exceed _______________ where installed in metal conduit or tubing.
Question 83 of 100
Fixed equipment above class I locations that may produce arcs or sparks shall be of the _______________ type.
Question 84 of 100
In a studio stage set lighting and effects system, if contactors are used as the disconnecting means for fuses, what is the maximum allowable distance for an individual externally operable switch controlling each contactor?
Question 85 of 100
Sheet metal auxiliary gutters shall be supported and secured throughout their entire length at intervals not exceeding _______________.
Question 86 of 100
Where supplementary overcurrent protection is used for appliances, it _______________ as a substitute for required branch-circuit overcurrent devices.
Question 87 of 100
A bare 4 AWG compact copper conductor has a diameter of _______________.
Question 88 of 100
Any combustible wall exposed between the edge of a luminaire canopy and an outlet box having a surface area of _______________ shall be covered with noncombustible material.
Question 89 of 100
A sign shall be placed at the __________ for commercial and industrial installations that indicates the type and location of each on-site optional standby power source.
Question 90 of 100
Resistors and reactors shall have a clearance of not less than _______________ from combustible materials.
Question 91 of 100
Where the secondary resistor of a wound-rotor AC motor is separate from the controller, and the motor is rated for light intermittent duty, the ampacity of the conductors between controller and resistor shall not be less than:
Question 92 of 100
Where a controller is built in as an integral part of a(n) _______________, individual marking of the controller shall not be required if the necessary data are on the nameplate.
Question 93 of 100
A space not less than _______________ shall be provided between the top of a switchboard and any combustible ceiling.
Question 94 of 100
Restricted Access, as it applies to adjustable-trip circuit breakers, shall be defined as located behind:
Question 95 of 100
Each branch-circuit disconnect rated _______________ or more and installed on solidly grounded wye electrical systems of more than 150V to ground, but not exceeding 600V phase-to-phase, shall be provided with ground-fault protection of equipment.
Question 96 of 100
The entire space within and under a dispenser pit or containment in a motor fuel dispensing facility is classified as a(n):
Question 97 of 100
The supply circuit to the mechanical ventilation equipment of charging equipment for an electric vehicle, shall be electrically __________ with the equipment and shall remain energized during the entire electric vehicle charging cycle.
Question 98 of 100
Circuits exceeding 120V, nominal, between conductors and not exceeding ___________, nominal, to ground shall be permitted to supply luminaires for illumination of outdoor areas of commercial buildings.
Question 99 of 100
Cable trays used to support service-entrance conductors shall contain only service-entrance conductors and shall be limited to _______________,
Question 100 of 100
Transformers insulated with listed less-flammable liquids that have a fire point of not less than 300°C shall be permitted to be installed in Type I or Type II buildings, in areas where the transformer is rated 45,000 volts or more.
