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 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 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 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?

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?

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

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.

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 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 __________.

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

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

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?

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.

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

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

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?

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

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

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 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 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.

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.

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?

How many services are allowed to a building?

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.

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 __________.

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

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.

What is the minimum size conduit for eight #12 AWG THW conductors?

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

All boxes and enclosures for emergency circuits shall be permanently _______ so they can be easily identified.

In an agricultural building, what type of wiring methods may be used?

A museum designed for ___ people or more is considered a place of assembly.

At a gasoline dispensing station….

An unattended self-service gas station requires…

In an aircraft hanger…

In a commercial repair garage that services gasoline vehicles with no ventilation…..

An intrinsically safe (low voltage) circuit is installed in a hazardous location using a metal raceway. It shall be bonded…

In a Class II, Division 2 area, a raceway, which runs into an unclassified area, is required…

Rigid Metallic Conduit (RMC) is used in a Class I Division 1 location.

If 75 KVA dry type transformer is installed indoors next to a wall made of combustible material, it needs to be separated by at least…

Generally, which is not a true statement?

What is the total required ampacity of conductors supplying 3 motors at 460 volts of 10, 15, and 20 HP, 3-phase induction type?

Conductors supplying one 200 HP and one 60 HP, 3 phase induction type motors at 480 volts, needs ____ total amperes for load.

Where flexible cord is used to supply power to a motor…

When a switchboard is installed on a floor, raceways shall not be more than ___ inches above the bottom of the enclosure.

An isolated grounding receptacle…

Electrical Nonmetallic tubing (ENT or blue smurf tube) is permitted…

Large conduit bodies like an LB…

A typical enclosure with circuit breakers has conductors running through it using it like a raceway.

Which is a true statement for minimum burial cover requirements under 600 volts, under a parking lot?

Given a total load of 377 amps, with 75 degree terminations, 3 phase in a metal raceway with no neutral conductor, all the 6 parallel conductors are now installed in one raceway and need to be now derated to…

A 1-inch EMT conduit has 18 current carrying conductors in the raceway. What percent of their ampacity is allowed?

Given a 3 phase 4 wire 400 amp commercial service, the neutral carries a major portion in harmonics and is considered current carrying requiring derating, the minimum size ungrounded conductors (hots) with 75 degree C terminations is…

An interior cannery wall with a surface mounted EMT conduit which is routinely washed down shall maintain a __ inch airspace between it and the wall.

On a 1000 amp service which is fed by 4 runs of 350 Kcmil Copper, other metal piping systems besides water are available on site and need to be bonded with minimum copper…

At a separate building supplied from a common service the interior metal water piping system needs to be bonded, the conductor size is based on…

What needs to be bonded?

A 500 HP pump service is fed with 1000 Kcmil Copper. The minimum size grounding electrode conductor to a ground rod is…

Generally, the main grounding electrode conductor…

A service location contains 3 disconnects.

When an existing second building is supplied from the first, the neutral can be bonded when…

When using an effectively grounded metal water pipe to ground a separately derived system transformer, as a general rule….

A separately derived system transformer and secondary side disconnect neutral bar may be bonded…

When grounding a separately derived system (transformer)…

When a grounded (neutral) conductor is ran in 2 raceways in parallel, it shall not be smaller than….

A ________ rated circuit breaker is not required to show its interrupting rating.

A commercial building may have…

A service entrance conductor “high leg” shall be identified as

Can fused branch circuits be installed in a conduit with service entrance conductors?

As a general rule, unless an exception is met, when one structure is fed from another…

Where it is _____ that 2 dissimilar loads will be used simultaneously, it shall be permissible to omit the smaller of the two in calculating the load in a feeder.

In a commercial application, how many receptacles can you put on a 20-amp circuit?

Where there is more than one voltage system at a building, like 480/277 and 120/208, which is a true statement?