Journeyman Exam Practice

At least one wall receptacle outlet(s) shall be installed in the bathroom within ____ inches of the outside edge of the basin in a dwelling unit.

At least ____ receptacle outlet(s) shall be installed for the laundry in a dwelling unit.

Hallways of ____ ft or more in length shall have at least one receptacle outlet in a dwelling unit.

At least ____ receptacle outlet(s) shall be installed within ____ inches of the top of a show window for each ____ linear ft or major fraction thereof.

Receptacle outlets mounted below a countertop space shall not be located where the countertop extends more than ____ inches beyond its support base.

Receptacle outlets shall be located on or above, but not more than ____ inches above the countertop.

A 125 volt, single-phase, 15 or 20 ampere receptacle outlet shall be installed at a(n) ____ location for the servicing of air-conditioning equipment.

For a dwelling unit, a ____ in a ____ shall not be considered as an outdoor entrance or exit and is not required to have a lighting outlet.

A branch circuit in a multifamily dwelling that supplies outdoor lighting in a common area, shall:

A cord connector that is supported by a permanently installed cord pendant shall be considered a(n) ____ outlet.

Receptacle outlets shall be spaced a maximum of 12 ft apart in all of the following rooms or areas of dwellings, except the ____.

In the living room of a dwelling, a wall space of at least ____ in. or more in width shall have a receptacle outlet installed.

In the family room of a dwelling, which of the following is not included in the measurement of wall space for required spacing of receptacle outlets?

In dwellings, a floor outlet shall be permitted to be counted as part of the required number of receptacle outlets where located a maximum of ____ in. from the wall.

In a dwelling unit, a receptacle outlet that is factory-installed in a listed permanently installed baseboard electric heater shall be permitted to serve as the required outlet for the wall space utilized by the baseboard heater if:

For a commercial occupancy, the National Electrical Code required receptacle outlets to be installed:

For dwelling units, a branch circuit supplying ____ receptacle outlet(s) shall be permitted to supply receptacles in an attached garage.

In a dwelling unit, a separate circuit with no other outlets or loads on the same circuit is required for all of the following locations or loads except:

In a dwelling unit kitchen, the small-appliance branch circuits that supply countertop receptacles shall not be permitted to supply receptacles:

In a dwelling unit kitchen, the two or more small-appliance branch circuits installed to serve countertop surfaces shall be permitted to serve which of the following cord-and-plug connected appliances?

In a dwelling unit, the receptacle outlet for the refrigerator shall be:

In a dwelling unit, receptacle outlets installed for a specific appliance shall be installed within at least ____ ft of the intended location of the appliance.

In the kitchen of a dwelling unit, a receptacle outlet shall be installed at each wall counter space that is at least ____ in. or wider.

In the kitchen of a dwelling unit, an island countertop space is 90 in. long with a width of 28 in., and it has a 30 in. wide range installed in the center, evenly dividing the space on each side of the range. How many receptacle outlet(s) is/are required for the island?

In a dwelling unit kitchen, a peninsular countertop is 2-1/2 ft wide and 7 ft long when measured from the connecting edge. At least ____ receptacle outlet(s) is/are required to be installed at this peninsular counter space.

In the kitchen of a dwelling, receptacles installed below the countertop of a peninsular counter space shall not be located where the countertop extends at least ____ in. or more beyond its support base.

In the kitchen of a dwelling unit, receptacle outlets for counter spaces shall be located a maximum of ____ in. above the countertop.

In a dwelling unit bathroom, the receptacle outlet(s) shall be supplied by at least one:

The outdoor outlets for a dwelling that are required to be accessible at grade level shall be installed a maximum of ____ ft above grade.

In a dwelling unit, the receptacle outlet provided for the clothes washer shall be:

In dwelling units, hallways of ____ ft or more in length shall have at least one receptacle outlet. The hall length shall be considered the length along the centerline of the hall without passing through a doorway.

For a store, at least one receptacle shall be installed above a show window or each ____ linear ft or major fraction thereof of show window.

Where an air-conditioning unit is located on the rooftop of an office building, a receptacle outlet shall be located on the roof on the same level and within ____ ft of the air-conditioning unit.

In a dwelling unit, a luminaire installed over a stairway shall be controlled by a wall switch at each floor level or entryway where the difference between floor levels is ____ risers (steps) or more.

In which of the following rooms of a dwelling would the required lighting outlet be permitted to be a wall-switched controlled receptacle?

In a dwelling unit, a lighting outlet being controlled by an occupancy sensor is:

What size overcurrent protection device is required for a branch circuit with a continuous load of 80 amps with 75 degrees C terminals and 3 AWG cu THWN conductors?

The feeder conductor ampacity shall not be less than that of the service conductors where the feeder conductors carry the total load supplied by the service conductors with an ampacity of ____ amperes or less.

Up to three sets of 3-wire feeders or two sets of 4-wire or 5-wire feeders shall be permitted to utilize a(n) ____ neutral.

Ground fault protection of equipment shall be provided for a feeder disconnect rated ____ amperes or more in a solidly grounded wye system with greater than 150 volts-to-ground, but not exceeding 600 volts phase-to-phase, unless ground-fault protection is provided on the supply side of the feeder or on the load side of any transformer supplying the feeder.

What size THWN copper conductors are required to supply a feeder with a continuous load of 140 amps and a noncontinuous load of 50 amps?

Where calculations result in a fraction of an ampere that is less than ____, such fractions shall be permitted to be dropped.

Where calculating the general lighting for an office building, a unit load of ____ volt-amperes or ____ volt-ampere per square ft, whichever is larger, shall be included for general-purpose receptacle outlets when the number of outlets to be installed is unknown.

Where calculating the general lighting and receptacle load for a dwelling unit, a unit load of ____ volt-amperes shall be used.

Where calculating the general lighting load for a restaurant, a unit load of ____ volt-amperes shall be used.

For the calculation of a feeder supplying receptacle loads for a store, the load for each receptacle outlet shall be ____ volt-amperes in accordance with 220.14(H) and (I) and shall be permitted to be made subject to the demand factors given int Table 220.42 of the first 10 kVA or less at 100 percent and any remainder over 10 kVA at ____ percent.

For calculating the load on a branch circuit, an outlet for a heavy duty lamp holder not used for general illumination shall be ____ volt-amperes.

For calculating the load on a branch circuit, sign and outline lighting shall be calculated at ____ volt-amperes.

Where applying demand factors for non-dwelling receptacle loads, the first 10 kVA is calculated 100 percent and the remainder is calculated at ____ volt-amperes.

The largest motor load shall be added to the other loads at ____ percent of the motor’s full load current rating.

In a dwelling, at least ____ branch circuit(s) shall be provided for the small-appliance circuits.

To calculate the load on a feeder using the standard calculation method, a fixed electric space heating load shall be calculated at ____ percent of the total connected load.

For show window lighting, a load of not less than ____ volt-ampere/linear foot shall be included for a show window, measured horizontally along its base.

In a dwelling unit, each small-appliance branch circuit shall be calculated at ____ volt-amperes.

For calculating the service conductor size for a dwelling, at least ____ volt-amperes shall be included for each two-wire laundry branch circuit.

For calculating a feeder load for a two-family dwelling, the demand factor permitted to be applied to the nameplate rating load of four or more appliances would apply to all of the following except:

For feeder or service calculations, four or more fixed appliances fastened in place shall have a demand factor of ____ percent applied.

Where determining the load, electric clothes dryers shall be ____ watts or the nameplate rating, whichever is larger, for each dryer supplied.

Demand factors for five electric clothes dryers shall be calculated at ____ percent.

What is the demand load for a 12 kW range?

A school with 12 kitchen appliances has a feeder demand factor of ____ percent applied.

Determine the general lighting and receptacle loads and the small-appliance and laundry loads for the following: 3000 square ft dwelling 2 small-appliance circuits 1 laundry circuit.

What is the VA rating for 150 general-purpose receptacle outlets to cord-and-plug connected loads used at noncontinuous operation?

What is the load in VA for the following fixed appliances? 1000 VA compactor 1200 Va disposal 1600 VA dishwasher 1200 VA microwave 2600 VA water pump?

Open individual conductors shall not be smaller than 10 AWG copper for 600 volts, nominal, or less, for spans up to ____ ft in length.

Overhead conductors for festoon lighting shall not be smaller than ____ AWG, unless the conductors are supported by messenger wires.

In all festoon lighting spans exceeding ____ ft, messenger wire shall support the conductors.

Conductors on poles shall have a separation of not less than ____ ft where not placed on racks or brackets.

Outside conductors of not over 600 volts, nominal, shall have a clearance from television antennas not less than ____ ft.

What size THWN copper conductors are required for a branch circuit having a 16 amp continuous load and an 8 amp noncontinuous load?

What size THWN copper conductors are required for a feeder having a 150 amp continuous load and a 20 amp noncontinuous load?

What size THWN copper conductors are required for a feeder having a 120 amp continuous load and an 80 amp noncontinuous load?

A permanent plaque or directory shall be installed at each service disconnecting location where a building or structure is supplied by more than one service or any combination of ____.

____ conductors supplying a building or other structure shall not pass through the interior of another building or structure.

Overhead service-drop conductors shall not be smaller than ____ AWG copper or ____ AWG aluminum or copper-clad aluminum.

Service conductors installed as open conductors or multiconductor cable without an overall outer jacket shall have a clearance of not less than ____ ft from windows that are designed to be opened, doors, porches, balconies, ladders, stairs, fire escapes, or similar locations.

Overhead conductors that are installed to supply only limited loads of a single branch circuit, such as small polyphase power or controlled water heaters, shall not be smaller than ____ AWG hard drawn copper.

Conductors shall have a vertical clearance of not less than ____ ft above the roof surface.

Service-drop conductors of 240 volts-to-ground crossing residential property or driveways shall have a clearance of ____ ft from finished grade.

Service-drop conductors crossing over public streets that are subject to truck traffic shall have a clearance of ____ ft from finished grade.

Service conductors shall be permitted to pass through the interior of another building, such as through the crawlspace of a multifamily dwelling, where they are:

Overhead service conductors run above the top level of a window shall:

Where service conductors pass over a flat roof, the vertical clearance required above the roof level shall be maintained for a distance of at least ____ ft in all directions from the edge of the roof.

Where a building with a flat roof is supplied by a 240 volt service drop passing 6 ft horizontally above the roof overhang and terminated through the roof raceway, the service-drop conductors shall have a clearance from the roof of at least ____ inches.

Service-drop conductors with a voltage of 240 volts-to-ground shall have a clearance of ____ ft over a commercial driveway used by commercial delivery trucks.

The point of attachment of service-drop conductors to a building shall be at least ____ ft above finished grade.

Service-entrance conductors for a one-family dwelling shall have a disconnecting means with a rating of not less than ____ amperes, three-wire.

For installations consisting of not more than 2-wire branch circuits, the service disconnecting means shall have a rating of not less than ____ amperes.

Service-lateral conductors shall not be smaller than ____ AWG copper or ____ AWG aluminum or copper-clad aluminum.

Service-lateral conductors exposed to physical damage can be protected by:

Each service disconnecting means shall be permanently marked to identify it as a ____ disconnecting means.

Service-entrance cables shall be supported by straps or other approved means within ____ inches of every service head, gooseneck, or connection to a raceway or enclosure and at intervals not exceeding ____ inches.

In a multiple occupancy building, ____ shall have access to the occupant’s service disconnecting means.

The service disconnecting means shall be plainly marked to identify whether it is in the ____ or ____ position.

If the service disconnecting means is located inside the building, it shall be located ____ entrance of the service conductors.

The National Electrical Code requires the service disconnecting means to be installed at a(n):

The service disconnecting means shall consist of not more than ____ switches or circuit breakers, or a combination of not more than ____ switches and sets of circuit breakers, mounted in a single enclosure, in a group of separate enclosures, or in or on a switchboard.

In a multiple occupancy building where electrical maintenance is not provided by the building management, the service disconnect for each occupancy shall be:

For a one-family dwelling, the service disconnecting means shall have a rating of not less than ____ amperes, three-wire.

Ground-fault protection of equipment shall be provided for solidly grounded wye electrical services of more than 150 volts-to-ground, but not exceeding ____ volts phased-to-phase for each service disconnect rated ____amperes or more.

For a 1600 ampere, 480/277-volt, solidly grounded, wye electrical service, the maximum setting of the ground-fault protection shall be ____ amperes.

Branch-circuit overcurrent protection devices are provided with interrupting ratings appropriate for the intended use but no less than ____ amperes.

Flexible cord, sized at ____ AWG or larger, used in extension cords made with separately listed and installed components shall be permitted to be supplied by a ____ ampere branch circuit.

In grounded systems, individual ____ circuit breakers rated 120/240 volts, with identified handle ties shall be permitted as the protection for each ungrounded (phase) conductor for line-to-line connected loads for ____ circuits.

Overcurrent protection devices shall be ____ and shall be installed so that the center of the grip of the operating handle of the switch or circuit breaker, when in its highest position, is not more than ____ above the floor or working platform.

Fixture wire shall be permitted to be tapped to a branch-circuit conductor of a ____ ampere branch circuit with a(n) ____ AWG for up to ____ ft of run length.

Overcurrent protection devices shall be located where they will not be exposed to ____ damage.

Plug fuses shall not be used in circuits exceeding ____ volts between conductors.

Where circuit breaker handles are operated vertically rather than ____, the “up” position of the handle shall be the ____ position.

A 16 AWG fixture wire shall be permitted to be protected by a ____ ampere circuit up to ____ ft in length.

The requirements that feeder tap conductors be at least 6 AWG aluminum or larger, or continuous from end-to-end and contain no splices, and not penetrate walls, floors, or ceilings, are some of the conditions for feeder taps that are:

The ampacity for tap conductors not over 25 ft long shall not be less than ____ of the rating of the overcurrent protection device protecting the feeder conductors.

In a multiple-occupancy building where electrical service and maintenance is provided by the building management and is under continuous building management supervision, the service overcurrent protection devices and feeder overcurrent protection devices supplying more than one occupancy shall be permitted to be located in which of the following locations?

A disconnecting means shall be provided on the supply side of cartridge fuses in circuits of ____ where accessible to other than qualified persons.

Where the interrupting capacity rating of ____ is other than 10,000 amperes, it shall be marked on the device.

Fuses rated at ____ volts, nominal or less, shall be permitted to be used for voltages at or below their ratings.

What size overcurrent protection device is required for a 10 ft tap where supplied by a 600 amp overcurrent protection device?

AC systems of less than ____ volts shall be grounded where supplied by transformers that exceed ___ volts-to-ground.

A ____ conductor that is required to be grounded by 250.26 shall be connected to the generator frame where the generator is a component of a ____ system.

A grounding electrode or grounding electrode system installed in accordance with Part III of Article 250 is required for each building or structure where ____ or more buildings or structures are supplied from a common AC service.

Where a submersible pump is used in a metal well casing, the well casing shall ____ the pump circuit equipment grounding conductor.

Metal raceways, enclosures, frames, and other noncurrent-carrying metal parts of electrical equipment installed on a building equipped with a lightning protection system may require bonding or ____ from the lightning protection conductors.

Normally noncurrent-carrying electrically conductive materials, such as circuits, equipment, and metal enclosures for conductors that are likely to become energized, shall be connected together and to the electrical supply source in a manner that establishes a(n) ____.

The grounding electrode conductor shall be connected to the grounded service conductor:

Where a separately derived AC system provided by a transformer is required to be grounded, the connection of the grounding electrode conductor of the derived system shall be made:

Where a separately derived AC system, such as a transformer, is located on the third floor of a shopping mall, the first choice for a grounding electrode is:

Exposed metal parts of fastened-in-place equipment shall be connected to the equipment grounding conductor where located within ____ of ground or grounded metal objects and subject to contact by persons.

The National Electrical Code permits frames of ranges and dryers to be connected to the grounded (neutral) conductor under certain conditions for ____ installations only where an equipment grounding conductor is not present in the outlet or junction box.

An equipment bonding jumper installed on the outside of a raceway shall be permitted to be a maximum of ____ ft in length and shall be routed with the raceway or enclosure.

A separate water piping bonding jumper shall not be required where the metal frame of a building or structure is used as the grounding electrode for a separately derived system and is ____.

The connection of the grounding electrode conductor to a metal underground water pipe, in direct contact with the earth for 10 ft or more and used as a grounding electrode, shall be at any point:

Which one of the grounding electrodes listed below is required to be supplemented by an additional electrode?

Any nonconductive paint, enamel, or similar coating shall be removed at threads, contact points, and contact surfaces, or ____.

Equipment bonding jumpers shall be of ____ material. A bonding jumper shall be a wire, bus, screw, or similar suitable conductor.

The interior metal water piping system shall be bonded to ____.

A metal underground water pipe in direct contact with the earth for ____ ft or more (including any metal well casing bonded to the pipe) and ____ (or made ____ by bonding around insulating joints or insulating pipe) can be used as a grounding electrode.

The grounding electrode conductor to a ground rod shall not be required to be larger than ____ AWG copper wire or ____ aluminum wire.

A single ground rod used as a grounding electrode that does not have a resistance of ____ ohms or less shall be augmented by one additional electrode of any of the types specified by 250.52(A)(4) through (A)(8).

Where multiple ground rod, pipe, or plate electrodes are installed, they shall not be less than ____ ft apart.

Equipment grounding conductors run in the hollow spaces of a wall are not required to be protected from physical damage by enclosing the conductor in a raceway if installed in sizes smaller than ____ AWG copper.

All of the following statements are true for a concrete-encased electrode, except:

A metal underground water pipe may serve as a grounding electrode if it is in direct contact with the earth for at least ____ ft or more.

In an industrial, commercial, and institutional building, where the conditions of maintenance and supervision ensure that only qualified persons will service the installation:

For a bare copper conductor installed in a concrete footing as a concrete-encased grounding electrode, which of the following is not a correct National Electrical code requirement? The bare copper conductor shall be:

Where multiple rod, pipe, or plate electrodes are installed, they shall be spaced at least ____ft apart.

Where a ground rod cannot be driven to the required depth, it shall be driven at an angle or buried in a trench at least ____ ft deep.

A ground rod shall be installed so that at least ____ ft of the length of the rod is in contact with the soil.

A single ground rod that has a resistance to ground of 50 ohms has:

The minimum size grounding electrode conductor that shall be permitted to be run along the surface of the building construction without protection, where it is securely fastened to the construction is ____ AWG copper.

Where the DC system is other than a three-wire balancer winding with overcurrent protection, the grounding electrode conductor shall not be smaller than the ____ conductor supplied by the system, and not smaller than AWG copper.

The size of the grounding electrode conductor for a DC system, connected to a concrete-encased electrode as in 250.52(A)(3), that portion of the grounding electrode conductor that is the sole connection to the grounding electrode, shall not be smaller than ____ AWG copper.

All ____ elements used to terminate a grounding electrode conductor or bonding jumper to a grounding electrode shall be ____.

Ground clamps or other fittings shall be approved for general use without protection or shall be protected from physical damage as follows:

Where connected to a ground ring as in 250.53(A)(4), that portion of the direct-current grounding electrode conductor that is the sole connection to the grounding electrode(grounding ring) shall not be required to be larger than a ____ AWG copper wire.

Secondary circuits of current and potential instrument transformers shall be grounded where the primary windings are connected to circuits of ____ volts or more to ground and, where on switchboards, shall be grounded irrespective or voltage.

The equipment grounding conductor for secondary circuits of instrument transformers and for instrument cases shall not be smaller than ____ AWG copper or ____ AWG aluminum.

Which of the following wiring methods is not permitted by the National Electrical Code to be used as an equipment grounding conductor?

Bare aluminum or copper-clad grounding electrode conductors that are used outside shall not be terminated within ____ in. of the earth.

The size of the grounding electrode conductor connected to a concrete-encased electrode for a grounded AC system shall not be smaller than ____ AWG copper.

The minimum size copper grounding electrode conductor required for a 200 ampere service consisting of 3/0 AWG THW copper service-entrance conductors is ____ AWG copper.

A grounding electrode conductor that is the sole connection to a rod electrode shall not be required to be larger than ____ AWG.

Which of the following is not permitted to be used as the connection for grounding conductors and bonding jumpers?

What size copper equipment grounding conductor is required for an overcurrent protection device rated at 400 amps?

What size copper grounding electrode conductor (to metal building steel) is required for service-entrance conductors that are sized 3/0 AWG copper?

Conductors of circuits rated over 600 volts shall not occupy the same equipment wiring enclosure, cable, or raceway with conductors or circuits rated 600 volts or less unless otherwise permitted for the following (determine which is not permitted):

Where a raceway is exposed to physical damage, ____ shall be permitted to be used.

Where there is not objection because of weakening the building structure, in both exposed and concealed locations, cables or raceway systems that are not run through the center of the framing members shall be permitted to be placed in a notch cut in the framing member and protected by a steel plate of ____ in.

Raceways shall be provided with ____ fittings where necessary to compensate for thermal expansion and contraction.

No wiring systems of any type shall be installed in ____ used to transport dust, loose stock, or flammable vapors.

Conductors of AC and DC circuits, rated 600 volt or less, shall be permitted to occupy the same equipment wiring enclosure, cable, or raceway where all conductors:

In exposed locations where a cable is run through bored holes in studs, the edge of the hole shall be at least ____ in. from the nearest edge of the stud.

Where nails or screws are likely to penetrate, physical protection, such as steel plates, is required for all of the following raceway-type wiring methods installed in shallow grooves, except:

A fitting, such as an insulating bushing or insulating material, shall be provided to protection conductors where raceways contain ____ AWG or larger insulated circuit conductors and these conductors enter a cabinet, box, enclosure, or raceway.

A 120/240 volt, 40 ampere branch circuit from a house to an outbuilding is directly buried in an underground installation with Type UF cable. The UF cable shall be at least ____ in. deep.

A direct-burial cable that is run underground, emerges at the outside wall of a building, and then enters the building shall be protected by an enclosure or raceway to:

A direct-burial UF cable for a 24 volt circuit is installed outside an office building for low-voltage landscape lighting. This cable shall be buried at least ____ in. deep.

A PVC conduit is buried under a single-family dwelling and contains a 120 volt, 30 ampere circuit for an irrigation pump for the yard of the dwelling. This conduit shall be buried at least ____ in. deep in the outside yard area.

Service-lateral cables that are directly buried under a commercial driveway shall be buried at least ____ in. deep.

A directly buried service lateral, installed down a utility pole and then underground to emerge at a building, shall be protected at the pole by an enclosure or raceway to a point at least ____ ft above finished grade.

Where directly buried conductors emerge from the ground and are subject to physical damage, which of the following raceways are permitted to provide the protection required by the National Electrical Code?

Rigid metal conduit shall be buried in the ground a minimum of ____ in.

In indoor wet locations, which of the following type of raceway is not required to be mounted so that there is at least a 1/4 in. space between it and the mounting surface or the wall?

A cable installed in exposed or concealed locations under metal-corrugated sheet roof decking, shall be installed and supported so there is not less than ____ in. measured from the lowest surface of the roof decking to the top of the cable.

At each lighting outlet, at least ____ in. of free conductor shall be left for the connection of luminaires.

Where installed in vertical raceways, copper conductors of size 250 KCMIL shall be supported every ____ ft.

Which of the following wiring methods shall be permitted to be installed in a fabricated duct for plenum used for environmental air? (General rule)?

Where installed in a fabricated environmental air duct, flexible metal conduit shall be limited to a maximum length of ____ ft.

Conductors over 600 volts shall not be bent to a radius less than ____ times the overall diameter for non-shielded conductors.

The largest size solid conductor permitted to be installed in raceways is ____ AWG.

The minimum size feeder conductors permitted to be installed in parallel is ____ AWG.

Where conductors are run in parallel, several conditions are required. Which one of the following conditions is not one of those requirements? Parallel conductors shall:

Conductors in sizes smaller than ____ AWG shall be permitted to be run in parallel to supply control power.

In an existing installation, where nonlinear loads are causing an increased load on grounded (neutral) conductors, under an engineer’s supervision, it shall be permitted to run the grounded (neutral) conductors in parallel for sized as small as ____ AWG.

Which insulation shall be permitted to be used in wet locations?

A multiconductor flat cable ____ AWG or larger shall be permitted to employ an external ridge on the grounded (neutral) conductor.

A conductor with black insulation shall be permitted to be used as an equipment grounding conductor where permanently and properly identified, if it is at least size ____ AWG.

Where two different ampacities apply to adjacent portion of a circuit, the higher ampacity shall be permitted to be used beyond the point of transition, a distance equal to ____ ft or ____ percent of the circuit length figured at the higher ampacity, whichever is less.

A derating factor of ____ percent shall be applied for THHN copper conductors running through an area with an ambient temperature of 120 degrees F.

Where multiconductor cables (nonmetallic-sheathed) are not installed in raceways and are bundled longer than ____ in. without maintaining spacing, the allowable ampacity of each conductor shall be derated.

An adjustment factor of ____ percent shall be applied for four current-carrying conductors installed in a raceway.

An adjustment factor of ____ percent shall be applied for twenty current-carrying conductors installed in a raceway.

A derating factor shall not apply to conductors in nipples having a length not exceeding ____ in.

Where burial depths are deeper than shown in a specific underground ampacity table or figure, an ampacity derating factor of ____ percent per increased ____ ft of depth for all values of RHO shall be permitted.

Where a four conductor, directly buried UF cable leaves an outdoor trench and is extended up a pole in rigid metal conduit used for physical protection, ampacity derating factors shall not be required if the conduit has a maximum length of ____ ft.

What is the current-carrying capacity of 12 – 12 AWG THHN copper conductors pulled through 3/4 in. electrical metallic tubing?

What is the ampacity for 8 – 10 AWG THHN copper current-carrying conductors where the raceway is routed through an area with an ambient temperature of 120 degrees F?

Cabinets installed in noncombustible material, such as walls of concrete, tile, or other noncombustible material, shall be so installed that the front edge of the cabinet will not be set back from the finished surface more than ____ in.

In a cabinet containing overcurrent devices, the conductors shall not fill the wiring space at any cross section to more than ____ percent of the cross-sectional area of the space, and the conductors, splices, and taps shall not fill the wiring space at any cross section to more than ____ percent of the cross-sectional area of that space.

Other than at points of support, there shall be an airspace of at least ____ in. between the base of the device and the wall of any metal cabinet in which the device is mounted.

Where the voltage is 277 volts-to-ground, the airspace clearance between the walls; back; gutter partition; if of metal, or door of any cabinet or cutout box and the nearest exposed current-carrying part of an electrical device in the cabinet shall be ____ in.

Boxes used to enclose ____ devices shall be of such design that the devices will be completely enclosed on back and sides and substantial support for the devices will be provided. Screws for supporting the box ____ be used in attachment of the device contained therein.

In straight pulls where boxes and conduit bodies are used as pull or junction boxes, the length of the box or conduit body shall not be less than ____ times the trade diameter of the largest raceway.

Where ____ are installed in a metal or nonmetallic box, each section shall be considered as a separate box.

Each conductor that passes through the box without splice or termination shall be counted ____. Each loop or coil of unbroken conductor not less than ____ the minimum length required for free conductors in 300.14 shall be counted ____.

Equipment grounding conductors passing through or spliced together in the box count as ____ conductor(s). Where an additional set if equipment grounding conductors, as permitted by 250.146(D), is present in the box, ____ additional volume allowance shall be made based on the ____ equipment grounding conductor in the additional set.

For each yoke or strap containing one or more devices or equipment, a ____ volume allowance in accordance with Table 314.16(B) shall be made for each yoke or strap based on the ____ conductor connected to a device(s) or equipment supported by that yoke or strap.

Where ____ or more luminaire studs or hickeys are present in the box, a ____ volume allowance in accordance with Table 314.16(B) shall be made for each type of fitting based on the ____ conductor present in the box.

Conduit bodies enclosing ____ AWG or smaller conductors, other than short-radius conduit bodies, shall have a cross-sectional area not less than ____ the cross-sectional area of the ____ conduit or tubing to which they can be attached.

Each conductor that originates outside the box and terminates or is spliced within the box shall be counted ____time(s).

Where an additional set of equipment grounding conductors is installed as an isolated equipment grounding conductor and run with a regular equipment grounding conductor, the isolated equipment grounding conductor shall count as ____ conductor(s).

Where ____ or more internal cable clamps, whether factory or field supplied, are present in the box, a ____ volume allowance in accordance with Table 314.16(B) shall be made based on the ____ conductor present in the box.

Where nonmetallic-sheathed cable or multiconductor Type UF cable is installed in a 2 – 1/4 in. x 4 in. wall- or ceiling-mounted nonmetallic box, securing the cable to the box is not required if the sheath extends through a cable knockout inside the box at least ____ in. and is stapled a maximum of ____ in. from the box.

Boxes, mounted in walls or ceilings with a surface of concrete, tile, gypsum, plaster, or other noncombustible material and employing a flush-type cover or faceplate, shall be installed so that the front edge of the box, plaster ring, extension ring, or listed extender will be set back a maximum of ____ in.

In walls and ceilings constructed of wood or other combustible surface material, boxes, plaster rings, extension rings, or listed extenders shall be ____ from the finished surface of the wall.

Plaster, drywall, or plasterboard surfaces that are broken or incomplete around boxes employing a flush-type cover or faceplate shall be repaired so there will be no gaps or open spaces greater than ____ in. at the edge of the box.

A 100 cu. in. or smaller enclosure that does not contain devices other than splicing devices, support luminaire(s), lamp holder(s), or other equipment shall be permitted to be supported only by raceways threaded wrench tight into threaded entries or hubs identified for the purpose, if the conduit is secured within ____ ft of the enclosure, or within ____ in. of the enclosure if all conduit entries are on the same side.

Boxes intended to enclose devices or utilization equipment supplied by 14 AWG or smaller conductors shall have an internal depth of not less than ____ in.

What size device box is required for the following: 2 – 12 AWG hot conductors, 2 – 12 AWG neutral conductors, 1 duplex receptacle, 1 – 12 AWG pigtail, and 1 – 12 AWG bonding jumper?

What is the minimum length of a junction box for an angle pull that has one run of 3 in. raceways?

Which of the following wiring methods requires an insulating bushing to be installed that is visible for inspection where connected to a box or cabinet?

Unless otherwise provided, Type AC cable shall be supported at intervals not exceeding ____ ft.

Where run across the top of floor joists in accessible attics, or within ____ ft of floor or floor joists across the face of rafters or studding in attics and roof spaces that are accessible, Type AC cable shall be protected by substantial guard strips that are installed at least as high as the cable.

Where this space is not accessible by permanent stairs or ladders, protection of the Type AC cable shall only be required within ____ ft of the nearest edge of the scuttle hole or attic entrance.

Type AC cable installed in thermal insulation shall have conductors rated at ____ degrees C, but the ampacity of Type AC cable installed in these applications shall not exceed that of ____ degrees C rated conductors.

Unless otherwise provided, Type MC cable shall be supported at intervals not exceeding ____ ft.

Type MC cable shall be supported within 12 in. of boxes, cabinets, fittings, or other cable terminations, where it contains ____ or fewer conductors that are sized no larger than ____ AWG.

Type MC cable shall be installed through bored holes in framing members so that the nearest outside surface of the cable is not less than ____ in. from the nearest edge of the framing member.

Where there is no objection of weakening the building structure, for both exposed and concealed locations, Type MC cable can be laid in notches in wood studs, joists, rafters, or other wood members, but only where the cable is protected by a steel plate of at least ____ in. in thickness.

Where MC cable is run across the face of rafters in an accessible attic, not accessible by a permanent ladder of stairs, the Type MC cable shall be protected within ____ ft of the nearest edge of the attic entrance.