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 __________.

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 #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.

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 __________.

Which is not considered an electric vehicle by the NEC?

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.

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.

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

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.

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 __________.

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?

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

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

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 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?

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

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 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?

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.

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 maximum number of # 12 conductors that can be installed in a 4 11/16″ x 1 1/2″ square junction box?

How many 1/0 THHN compact conductors can you install in a 1 1/2″ Electrical Metallic Tubing (EMT)?

How many 1/0 THHN conductors can you install in a 1 1/2″ Electrical Metallic Tubing (EMT)?

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

Which is not considered a place of assembly?

A luminaire (light fixture) used to illuminate a paint spray booth can be a fluorescent if…

A gasoline station requires…

At a gasoline dispensing station….

In a commercial garage…

Intrinsically safe conductors, raceways, and junction boxes should be identified and colored…

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…

A metal raceway in a Class I Division 2 location shall be bonded…

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?

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…

An isolated grounding receptacle…

What is the ampacity of 2/0 type W cable (cord) with 75º terminations, where it is not installed in a raceway, and not in contact with another conductor?

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

Liquidtight Flexible Metal Conduit (LFMC, or Sealtight) can be used…

On an outside 100 ft. run of Rigid Nonmetallic Conduit (RNC, PVC), there is a potential temperature change of 100* F. to 0* (100* change). What is the expansion change in inches you can expect?

A bushing is required on Rigid Metallic Conduit (RMC) when it enters a standard box…

In straight pulls, the length of a junction box is not to be less than ___ times the diameter of the largest raceway.

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, parallel ______ conductors can be used in one raceway. You can use the 90-degree column for derating. What conductor size could you use?

What is the largest solid conductor size that can be installed in a raceway?

In a conduit system…

On a branch circuit with a 50-ampere breaker, what is the minimum size copper equipment grounding conductor required?

If a structure has an installed lightning protection system…

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?

Generally, the main grounding electrode conductor…

A service location contains 3 disconnects.

When a metal underground water pipe is used as an electrode…

A metal piping system is used as a grounding electrode.

The general rule is you need at least 6 inches of free conductor length where it emerges at a junction box.

A 4 wire single phase feeder is ran from building 1 to building 2 and it includes 2 phase conductors, a neutral and an equipment grounding conductor…

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

Which is not a true statement? A commercial 1000 amp service may have its ungrounded conductors sized…

A commercial building may have…

A structure shall be served by only one service unless…

An outside pole light…

Conductors of different systems are installed in the same raceway ( 480/277, 240/120) and each requires a neutral, where the conductors are accessible,

A transformer is installed below an electrical panel…