A 300 HP, 480-volt 451 amp, 3 phase motor is a Squirrel cage type. If dual element time delay fuses are used, generally they may be rated up to __________ percent of the full load current.

A 300 HP, 480-volt 451 amp, 3 phase motor has 250 KCMIL Copper service conductors. If this service is grounded to a metal water piping system that can be considered an electrode, the minimum size grounding electrode conductor can be a __________.

A 300 HP, 480-volt 451 amp, 3 phase motor has 250 KCMIL Copper service conductors. If this service is grounded with 2 ground rods, the minimum size grounding electrode conductor can be a __________.

A 300 HP, 480-volt 451 amp, 3 phase motor is now protected by a 600 ampere instantaneous trip circuit breaker. The motor overloads are rated and set at 400 amperes. The minimum size of the equipment grounding conductor can now be a __________.

A 300 HP, 480-Volt 451 amp, 3 phase motor is fed with 2 raceways. The minimum size of the equipment grounding conductor in each raceway shall be a __________ conductor if the Automatic Overcurrent Protective Device is rated at 500.

A 300 HP, 480-volt 451 ampere, 3 phase motor is fed with 1 raceway. The minimum size of the equipment grounding conductor shall be a __________ conductor if the Automatic Overcurrent Protective Device is rated at 500.

A 300 HP, 480-volt 451 ampere, 3 phase motor has a service with two, 4/0 Copper parallel conductors, the minimum grounded (neutral) size required for the main service can be two, __________ conductors. (Add circular mil areas together).

A 300 HP, 480-volt 451 ampere, 3 phase motor is again fed with 1 raceway. If the six paralleled type USE insulated conductors with 75 degree C terminations derated at 80% are used, at least __________ AWG sized wires are needed for the ungrounded (hot) conductors. (The 90 degree column can be used if the de-rating adjustment factors were used).

A 300 HP, 480-Volt 451 ampere, 3 phase motor is now fed with only 1 raceway. This requires all six ungrounded (hot) conductors to be installed in 1 conduit so they must be de-rated to __________.

A 300 HP, 480-volt 451 ampere, 3 phase motor is fed with 2 raceways. If type USE insulated paralleled conductors with 75 degree C terminations are used, at least __________ AWG sized wires are needed for the ungrounded (hot) conductors.

What is the ampacity needed for a 300 HP, 480-volt, 3 phase motor? This motor will have a continuous duty requiring a 125% rating.

When determining pipe fill requirements, what would be the circular mil size of a #2 AWG conductor?

When determining pipe fill requirements, what would be the approximate area in inches squared for an insulated #2 AWG THWN conductor?

Given you have two, #8 conductors at 0.0366 inches squared and one, #10 conductor at 0.0211 making a total volume of 0.0943 inches, what is the smallest size Flexible Metal Conduit (Flex, or FMC), trade size you can install using the 40% fill column?

When determining pipe fill requirements, what is the capacity in area of a 1 1/4″ Flexible Metal Conduit (Flex, or FMC) with the typical 40% fill column for over 2 wires?

A 20-inch nipple is installed between 2 junction boxes. It is allowed to be filled with conductors to…

How many #6 AWG THW conductors can be installed in a 1 inch EMT conduit?

How many #4 AWG compact THWN/THHN conductors can you install in a ¾ inch trade size Liquidtight Flexible Nonmetallic Conduit (LFNC)?

How many #4 AWG THWN/THHN conductors can you install in a 3/4″ trade size Liquidtight Flexible Nonmetallic Conduit (LFNC)?

A Class 2 or 3 remote-control signaling circuit conductor shall not be secured to __________.

A new type solid-state, 120-volt dimmer switch is installed in a junction box and it is also connected with a Class 2 circuit to a central microprocessor for control. The required 1/4″ inch separation for the low and high voltage conductors in the same enclosure can not be maintained when trimming out.

As a general rule, for a photovoltaic system, the ampacity of conductors and overcurrent devices shall not be less than __________ of the computed current.

Which is a true statement about a Solar Photovoltaic System?

The basic photovoltaic mechanically and electrically grouping of modules is called a(n) __________.

The #8 solid copper bonding conductor for a swimming pool is not required to be connected to the __________.

To be considered a pool, permanently installed, it must be in or partially in the ground, inside a building, or have a water depth greater than __________ inches.

Article 640 covers equipment and wiring for __________.

Which is not considered an electric vehicle by the NEC?

How many receptacles are required in an elevator machine room?

Conductors installed in an escalator wellway can be installed in __________.

A feeder to an apartment building supplies power to 2 elevators with a 50% duty cycle. A __________ demand factor shall be applied.

An individual relocatable office partition with a single flexible cord and plug connection to power shall not contain more than __________ 15 ampere, 125-volt receptacle outlets.

A freestanding office partition with outlets can be fed by a single flexible cord if the cord is __________ feet or less.

A freestanding office partition with receptacles can be fed by a single flexible cord if __________.

Because of some fatalities, all portable electric signs shall be __________.

A branch circuit for a sign that includes fluorescents for illumination shall not exceed __________ amperes.

A tenant space in a commercial building with an entrance accessible to customers and pedestrians __________.

If any lights or receptacles are installed above a dressing room table counter in a theater, they shall be controlled by a switch in the __________.

Bare bulb lamps are installed behind a theater stage where they might come into contact with combustible scenery material. They need to be free from physical damage, have a guard, and/or provide an air space of at least __________ inch(es) to any combustible material.

The general wiring method allowed in a theater location is __________.

A gas station is adding Compressed Natural Gas (CNG) to its dispensing island. There is a canopy above this dispenser, including lighting and ignitable vapors, which may become entrapped.

What is the classification of a major repair garage lubrication pit where oil changes are made and fuel is dispensed? (There is no air exchange ventilation).

What is the classification of a minor repair garage lubrication pit where oil changes are made but no fuel is dispensed? (There is no air exchange ventilation).

How many amperes does a 40 HP three phase 480 volt Induction-Type motor draw (assuming an 80% power factor)?

A metal pole supporting a light fixture shall have a handhole not less than __________ to provide access to the terminations.

How many grounded circuit conductors can be connected in a single hole in the neutral bus of a service-entrance panelboard?

How many equipment grounding conductors can be connected in a single hole in the neutral bus of a service-entrance panelboard?

When a large number of circuits are supplied in a single lighting and appliance panelboard, if there are heavy load conditions excessive temperatures may cause damage. The number of circuits supplied to one panelboard is limited to __________.

The ampacity of a single #10 AWG fixture wire is __________ amperes.

Which is an approved method of preventing tension or pull on a flexible cord to the connections?

Besides within 3 feet of a conduit termination, as to a junction box, Rigid Nonmetallic Conduit (RNC, PVC) shall be secured and supported __________.

Flexible Metallic Conduit (FMC, Flex) is used for a branch circuit to a motor to provide flexibility because of vibration.

Which is a true statement about strapping and supporting Electrical Metalic Tubing (EMT)?

A Rigid Metal Conduit is field threaded. A standard __________ inch taper per foot shall be used for the cutting die.

An underground Rigid Nonmetallic Conduit (RNC, PVC) feeder is considered a wet location, a #12 AWG Nonmetallic Sheathed Cable (Romex, NM) is to be installed in this raceway.

Flat Conductor Cable (FCC) shall be attached to the floor with __________.

One condition for an unbroken length of rigid metal conduit to support a box used for a luminaire (light fixture) is that the maximum weight of the fixture supported by a single raceway is no more than __________ pounds.

When can a conduit LB condolet contain a splice with wire nuts?

What is the allowable ampacity of 6, #8 THWN conductors in a conduit when passing through an area with an ambient temperature of 40 degree C (104 degree F) requiring a correction factor application to compensate?

What is the allowable ampacity of 6, #8 THWN conductors in a conduit?

Which is not a true statement about running conductors in parallel?

An opening around an electrical conduit that penetrates through a firewall (fire resistant rated) needs to be sealed. __________ can be used to maintain the fire resistance rating.

3/0 AWG copper wire requires support in vertical raceways greater than __________ feet.

As a general rule, a conduit can be used to support another conduit if __________.

Landscape lighting is installed to enhance appearance at a commercial building. Type UF cable limited to 24 volts is used. When installed under the parking lot it must be at least __________ inches below finished asphalt.

A metal water piping system is available to a separately derived system (transformer) that serves that area.

A structure includes a metal sprinkler piping system, a metal gas piping system, and exposed structural steel available on the site.

A metal gutter has metallic conduits entering it with unused oversized concentric knock outs at those entries.

A 200 ampere service with 2/0 copper service entrance conductors is grounded by running one continuous wire from a metallic piping system, then to 2 ground rods and then to the service neutral bar.

A 1000 ampere service is fed with 3 parallel runs of 350 Kcmil copper conductors per phase. What is the minimum size conductor required to the ground rods?

A copper grounding electrode conductor is ran along the surface of a building between 2 ground rods. It is not subject to physical damage and without covering or protection. What is the minimum size allowed?

A metal underground water pipe is used as the electrical system’s grounding electrode. It shall be supplemented with __________ more ground rod(s) if the first one has a resistance of more than 25 ohms to ground.

If an eight foot ground rod can be driven for an electrical service, it shall have __________ feet in contact with the soil.

An AC transformer operating at 32 volts is required to be grounded __________.

After a ground rod clamp is installed, it should be accessible and if it is subject to physical damage it shall be protected __________.

The next standard overcurrent protective device size up can be selected on a single main for your conductors if the device is rated __________ amperes or less.

A service consists of 3 service disconnects. To be considered “grouped” together the disconnects __________.

Large service conductors are terminated in a gutter where taps are made into disconnects.

A large service terminates in a building gutter where taps are made into disconnects. As a general rule, what is the maximum number of disconnects allowed?

As a general rule, underground service entrance conductors shall not be smaller than __________ AWG copper.

A conduit contains service entrance conductors. Which conductors are allowed in that same raceway?

A structure has an existing 240/120 volt service with 5 disconnect switches. An additional 480 volt service is added with 4 disconnect switches. The disconnects are labeled and a plaque is provided at each location specifying each power source.

How many services are allowed to a building?

A commercial building has a power company pad mount transformer outside. There are 3 separate underground service laterals from the transformer to the structure, each of which terminates in a separate service disconnect.

A disconnect for a feeder to a separate structure shall not be rated __________.

Which is a true statement about a feeder disconnect to another building?

Given that a separate building is supplied by a single branch circuit with an equipment grounding conductor from a common service.

Given that a separate building is supplied by a single branch circuit with an equipment grounding conductor from a common service.

Given a feeder is installed from one structure to another. Because this building is in a remote location, one additional disconnecting means is for a fire pump. The disconnecting means for this fire pump shall __________.

A large feeder is run from one structure to another. Conductors are at the second structure in a gutter where taps are made into disconnects.

A large feeder is run from one structure to another. It is terminated at the second structure in a gutter where taps are made into disconnects. As a general rule, what is the maximum number of disconnects allowed?

A feeder from one structure is run to another, but first it passes through another 3rd building to get there. It only passes through the 3rd building without any purpose for that structure or load __________.

When one building is on a single property with one owner and it is fed from another, how many feeders are allowed?

A barn has an opening for the loft on the second floor. A feeder or a branch circuit can not __________ the entrance to the building opening.

A commercial kitchen has 2 electric ranges, 2 large ovens and one smaller oven. What is the feeder demand factor percent allowed?

A store has an 18 foot wide Show Window. At least __________ receptacle outlet(s) shall be installed above the window.

A 30 ampere branch circuit with one 30 ampere receptacle shall have a maximum load of __________ amperes.

103. Which of these locations requires GFCI protected outlets?

102. Two entrances are required at each end of the working space of large electrical equipment rated __________ amperes or more.

Lighting for a(n) __________ controlled only by automatic means is prohibited.