final test sparky

When calculations in Article 220 result in a fraction of an ampere that is less than _____, such fractions can be dropped.

.50

If a 20A branch circuit supplies multiple receptacles, the receptacles shall have an ampere rating of no less than _____.

15a

For other than dwelling occupancies, banks, or office buildings, each receptacle outlet shall be calculated at not less than _____ VA.

180

At least one receptacle outlet shall be located within _____ ft of the outer end of a peninsular countertop or work surface.

2

If the difference between the current leaving and returning through the current transformer of the GFCI-protection device exceeds _____, the solid-state circuitry de-energizes the circuit.

5mA

If the circuit's overcurrent device exceeds _____, the conductor ampacity shall have a rating not less than the rating of the overcurrent device.

800a

Using the standard load calculation method, the feeder demand factor for five household clothes dryers is _____ percent.

85

_____ shall not be located over the steps of a stairway.

Overcurrent devices

The current of the circuit can be determined by the formula I = ES/RT.

True

Series circuits are often used for _____ applications.

a and b

A short circuit is a _____ electrical connection between any two conductors of the electrical system.

a or b

_____ breakers permit the thermal trip setting to be adjusted to coordinate the circuit breaker's operation with other protection devices.

adjustable trip

Article 200 provides the requirements for _____.

all of these

Fuses shall be marked with their _____.

all of these

Overcurrent devices are not permitted to be located in the bathrooms of _____.

all of these

Overcurrent devices shall not be located _____.

all of these

The next higher standard rating overcurrent device above the ampacity of the ungrounded conductors being protected shall be permitted to be used, provided the _____.

all of these

The purpose of overcurrent protection is to protect conductors and equipment against excessive or dangerous temperatures because of overcurrent. Overcurrent is current in excess of the rated current of equipment or conductors. It may result from a(n) _____.

all of these

Where grounded conductors of different systems are installed in the same raceway, cable, or enclosure, each neutral conductor shall be identified to distinguish the systems by _____.

all of these

The continuity of a grounded conductor shall not depend on a connection to _____.

any of these

Plug fuses of the Edison-base type shall be used only _____.

as a replacement in existing installations

A thermal-magnetic circuit breaker typically clears fault current in less than 3 to 5 cycles when subjected to a(n) _____.

b or c

To help reduce the hazard of electrical fires from a parallel arcing fault, the NEC requires a listed AFCI-protection device to protect _____ wiring in dwelling unit bedrooms.

branch-circuit

Where it is unlikely that two or more noncoincident loads will be in use simultaneously, only the _____ the loads used at one time is required to be used in computing the total load to a feeder.

largest of

For attics and underfloor spaces, utility rooms, and basements in all occupancies, at least _____ lighting outlet(s) containing a switch or controlled by a wall switch shall be installed where these spaces are used for storage or contain equipment requiring servicing.

one

Circuit breakers shall _____ all ungrounded conductors of the circuit both manually and automatically unless specifically permitted otherwise.

open

Overcurrent protection for conductors and equipment is provided to _____ the circuit if the current reaches a value that will cause an excessive or dangerous temperature in conductors or conductor insulation.

open

A(n) _____ is the operation of equipment or conductors in excess of their rated ampacity.

overload

120V, single-phase, 15A and 20A branch circuits supplying outlets and devices installed in _____ of hotels and motels shall be protected by any of the means described in 210.12(A)(1) through (6).

quest rooms

The identification of terminals to which a neutral conductor is to be connected shall be substantially white or _____ in color.

silver

A circuit breaker with a _____ rating, such as 120/240V or 277/480V can be used on a solidly grounded circuit where the nominal voltage of any conductor to ground does not exceed the lower of the two values, and the nominal voltage between any two conductors does not exceed the higher value.

slash

A circuit breaker with a _____ voltage rating, such as 240V or 480V, can be used where the nominal voltage between any two conductors does not exceed the circuit breaker voltage rating.

straight

Kirchoff's Current Law states, "In a series circuit, the current is _____ through the transformer, the conductors, and the appliance."

the same

The white conductor within a cable can be used for a(an) _____ conductor where permanently reidentified to indicate its use as an ungrounded conductor at each location where the conductor is visible and accessible.

ungrounded

In devices or utilization equipment with polarized connections, identification of terminals to which a neutral conductor is to be connected shall be substantially _____ or silver in color.

white

Receptacles shall have the terminal intended for connection to the grounded conductor identified by a metal or metal coating that is substantially white or silver in color or by the word "_____."

white

The total rating of utilization equipment fastened in place, other than luminaires, shall not exceed _____ percent of a multiple outlet branch circuit rating.

50

A circuit breaker having an interrupting current rating of other than _____ shall have its interrupting rating marked on the circuit breaker.

5000

The load for electric clothes dryers in a dwelling unit shall be _____ or the nameplate rating, whichever is larger, per dryer.

5000

The _____ sensing element causes the circuit breaker to open when a predetermined calibration temperature is reached.

thermal

An AFCI-protection device provides protection from an arcing fault by recognizing the characteristics unique to a parallel arcing fault and by functioning to de-energize the circuit when an arc fault is detected.

true

At least one lighting outlet controlled by a listed wall-mounted control device shall be installed in every habitable room, kitchen, and bathroom of a dwelling unit.

true

Circuit breakers and fuses are intended to interrupt the circuit, and they must have an ampere interrupting rating (AIR) sufficient for the available short-circuit current.

true

According to a NEMA report, 11 percent of the GFCI breakers protecting indoor receptacles failed, and _____ percent protecting outdoor receptacles failed.

20

A dwelling unit containing two 120V laundry branch circuits has a calculated load of _____ VA for the laundry circuits.

3000

The insulated grounded conductor(s) in a multiconductor cable _____ AWG or larger, shall be permitted to be re-identified at the time of installation at its terminations.

4

A dwelling unit containing three 120V small-appliance branch circuits has a calculated load of _____ VA for the small-appliance circuits.

4,500

Under the optional method for calculating a single-family dwelling service, general loads beyond the initial 10 kVA are assessed at a _____ percent demand factor.

40

To determine the feeder calculated load for ten 3 kW household cooking appliances, use _____ of Table 220.55.

column a

_____ conductors shall not be used for more than one branch circuit, one multiwire branch circuit, or more than one set of ungrounded feeder conductors except as allowed elsewhere in the Code.

equipment grounding

A 115/230V rated motor connected to a 230V circuit must have the windings connected in series so that each winding will receive at least 230V.

false

Ground-fault protection devices protect equipment from damaging ground-fault currents by opening all ungrounded conductors of the faulted circuit. This device will also protect persons.

false

The power consumed in a series circuit is equal to the power consumed by the largest resistance in the series circuit.

false

There can never be variations in the formulas used or the order in which they are used for series circuits.

false

Where there are two or more air-conditioning units served by the same feeder, it shall be permissible to apply a dwelling unit appliance load demand factor of 75 percent.

false

The screw shell of a luminaire or lampholder shall be connected to the _____.

grounded conductor

Circuit breaker enclosures shall be permitted to be installed _____ where the circuit breaker is installed in accordance with 240.81

horizontally

If you know the current of the circuit and the resistance of each resistor, the power of each resistor can be determined by the formula P = I2 x R.

true

Kirchoff's Voltage Law states, "In a series circuit, the sum of the voltage drops across all of the resistors equals the applied voltage."

true

No matter how many resistances there are in a series circuit, the sum of the voltages across all of the resistances equals the voltage of the source according to the Law of Proportion.

true

Resistance opposes the flow of electrons. In a series circuit, the total circuit resistance is equal to the sum of all of the resistances in series.

true

Severe electric shock or death can occur if a person touches the ungrounded and the neutral conductors at the same time, even if the circuit is GFCI protected.

true

The opening time for a protection device is inversely proportional to the magnitude of the current. The greater the current value, the less time it takes for the protection device to open.

true

The opposition to current flow results in a voltage drop of the circuit voltage.

true

To calculate the total resistance of the circuit: RT = R1 + R2 + R3 + ...

true

To determine the resistance of each resistive element in the circuit, use the formula R = E2/P. E is the rated voltage of the resistor, and P is the rated power of the resistor.

true

Unless marked otherwise, circuit breakers have a 5,000 AIC rating and fuses have a 10,000 AIC rating.

true

Where a motor is part of the noncoincident load and it is not the largest of the noncoincident loads, 125 percent of the motor load shall be used in the calculation if it is the largest motor.

true

Where a lighting outlet(s) is installed for interior stairways, there shall be a listed wall-mounted control device at each floor level and landing level that includes an entryway to control the lighting outlet(s) where the stairway between floor levels has six risers or more unless remote, central, or automatic control is used.

tue

Single-pole breakers with identified handle ties can be used to protect each ungrounded conductor for line-to-line connected loads.

ture

Supplementary overcurrent devices used in luminaires or appliances are not required to be readily accessible.

ture

The 3 VA per sq ft general lighting load for dwelling units includes general-use receptacles and lighting outlets.

ture

Each multiwire branch circuit shall be provided with a means that will simultaneously disconnect all _____ conductors at the point where the branch circuit originates.

ungrounded