IEC Midterm Semester 1

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.000055

.055 mA = ____ A

1,200,000

1.2 MV= ___ V

.01

10 A = ____ kA or KA

112,300

112.3 V=___mV

.072

72 mV= ____ V

150,000

A 150 kW generator produces___Watts of power.

67.45

A 4 AWG THHN/THWN copper conductor can carry a maximum of___Where installed in a temperature of 139*F

Decreased

A circuit is to be run to a parking lot light. The blueprints call for you to run 10 AWG wire that has a diameter of .116 inches. You, however, run 8 AWG wire that has a diameter of .128 inches. You have___the total circuit resistance.

1920

A total load of 28,800 watts is distributed equally over 15 circuits. What is the load per circuit in watts?

Alternating Current

AC is an abbreviation for?

offset

A___Consists of two bends, usually having the same degree of bend, made to avoid an obstruction blocking the run of pipe.

4 square * 1.5 box

According to NEC box fill requirements, which of the following boxes is the smallest permitted to be used for one receptacle, four 12 AWG conductors, Two cable clamps and two 12 AWG ground conductors?

210 & 220

According to the NEC index, branch circuits are covered under in Articles?

True

Ampacity and current-carrying capacity mean the same thing? True or False?

100

Article___in the NEC distinguishes between outlet and receptacle?

permanent provisions for cooking

As defined in Article 100, a dwelling unit has the following features.

increases

As the Resistance in a circuit is decreased the amount of current in the circuit?

increases

As the length of wire in a circuit increases, the circuit resistance?

Bathroom, Kitchen, Laundry room

Branch circuits that serve a___are required to be rated at 20 amperes where installed in a house

True

Conductors must be sized to be able to carry the maximum load to be served. True or false?

Three-Way Switches

Controlling a light from two locations requires two_____

Amperes

Current is measured in?

Direct Current

DC is an abbreviation for?

Electrons

Electrical current is the flow of?

90.7

Grounding is covered in Article____ in the NEC

Up,Down,Sideways

Grounding-type receptacles are permitted to be installed with the grounding terminal?

10 feet

How long must a hallway in a dwelling be to require at least one receptacle outlet?

23

How many 250-foot rolls of BX cables are needed if a job requires 5750 feet?

34.8

If #10 THHN/THWN copper conductors are installed in EMT and the EMT is installed where the temperature is 110*F, theconductors have a corrected current-carrying capacity of___amps.

40

If a simple circuit has 480 volts applied with a current flow of 12 amperes, what is the resistance?

120

If a simple circuit has a resistance of 1200 ohms and a current flow of .1 ampere, what is its applied voltage?

.25

If a simple circuit with 400 ohms of resistance has 100 volts applied, its current flow is___amps

closed

If current flows through, a circuit, the circuit is?

Go Down

If the voltage is raised in a simple circuit, what will the current do?

12 AWG copper

Ignoring the effects of voltage drop, a 20-ampere branch circuit requires___conductors

Ampacity

In general,___of a conductor must not be less than the rating of the overcurrent device protecting the conductor.

Flow

In order to have electric current present, free electrons must do what continuously?

shall

In the NEC, the word____means that "it must be done."

210.19(A) I-Note 4

In the NEC, voltage drop for branch circuits is covered in?

Two 6 AWG or Three 8 AWG

In unfinished basements where NM cable is run at angles with joists, it shall be permissible to secure cables not smaller than___or conductors directly to the lower edges of the joists.

Installed in a storage building for a single-family dwelling

Look in the NEC index and find uses permitted for NM Cable. An Example of a permitted use is where?

334.10

Look in the NEC index and find uses permitted for NM Cable. The Code Reference for this is?

Installed in wet locations

Look in the NEC index and find uses permitted for UF Cable. An Example of a permitted use is where?

Knowing how to find information in a phone book

Navigating the NEC should be similar to?

Attract

Opposite charges__?

resistance

Opposition to current flow is generally termed.

resistance

Opposition to current flow is generally termed?

devices

Receptacles are commonly referred to as?

False

Section 210.52 in the NEC provides loaction requirements for receptacles outlets in restaurants? true or false?

314.16(b)(4)

Section___Of the NEC states that for each yoke or strap, containg one or more devices or equipment, a double volume allowance shall be made.

210.52(C)(1)

Section____in the NEC has a requirement that, for dwellings, receptacle outlets along kitchen countertops shall be installed so that no point along the wall line is more than 600 mm (24 in.) measured horizontally from a receptacle outlet in that space.

210.52(A)(1)

Section___in the NEC has a requirement that dwelling receptacles be installed so that no point measured horizontally along the floor line of any wall space is more than 1.8 m (6 ft) from a receptacle outlet.

210.52(A)(3)

Section___in the NEC states that, for dwellings: "Receptacle outlets in or on floors shall not be counted as part of the required number of receptacle outlets unless located within 450 mm (18 in.) of the wall."

insulation type

THHN is the designatoin for the___of a conductor

constructing a building

The IEC curriculum is organized similar to?

Dry

The NEC considers an installation inside a building to be a ___Location

Wet

The NEC considers installations underground to be___locations

False

The code book is something each apprentice should attempt to memorize? True or False?

3,5

The code recommends a voltage drop no greater than___percent for feeders and no greater than___percent total for feeders and branch circuits together.

.0824

The cross-sectional area of a 4 AWG THHN/THWN copper conductor is___Square inches

one,unless listed for more

The maximum number of Type NM cables that can be inserted into a connector is?

Acceptable to the authority having jurisdiction

The meaning of approved is?

22.2222

The resistance of a drill is___ohms where the nameplate supplies the following information: 5.4 amps 120 volts

30.2632

The resistance of a garage door opener is___ohms given the following nameplate information: 3.8 amps 115 volts

20 amps

The temperature where 10 AWG THHN/TWHN copper conductors are installed in RMC is 165*F the wiere can carry a load that draws a maximum of?

hot

The ungergrounded conductor is often called the?

Watts

The unit of measurement for power is?

Repel

Two particles that are both negatively charged will___each other.

pressure

Voltage is similar to____in a water pipe.

Work Done

Wattage is often compared to?

100

What article of the NEC defines outlet and receptacle?

Article 100

What article of the NEC may be referred to as a dictionary or glossary of terms?

12.3

What is the corrected ampacity of a #12 THHN/THWN copper conductor where the temperature is 160*F

48.75

What is the corrected ampacity of a #6 THHN/THWN copper conductor where the temperature is 147*F?

unchanged

When Circuit conductors larger than the minimum required by the NEC are installed, the rating of a branch circuit is?

decreased

When circuit resistance is increased, such as when corrosion develops at wire nut terminations, the flow of electrons in a circuit is?

opens

When turned OFF, a circuit breaker____the circuit

12

Where a branch circuit is rated at 20 amps, the smallest circuit conductors that can be installed are___awg copper

43.00

Where two #18, three #16, two #14, three #12, two #10, three #8, and two #6 conductors are contained in box___ cubic inches will be occupied in the box by these conductors.

Gold and Aluminum

Which materials listed below are good conductors

Air

Which materials listed below are good insulators?

a coffee maker, an electric oven heating element

Which of the following is a (are) resistive load(s)

4 11/16 *1 1/2

Which of the following metal boxes could be used for one single-pole light switch (connected to 12 AWGs), six each 14 AWG conductors, four 12 AWG conductors, and two cable clamps?

Voltage

___is the force that causes current to flow.

Every 3 Years

how often is the NEC revised and updated?

Bathroom

which areas in a residence require a switch-controlled lighting outlet instead of a switch-controlled receptacle?


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