Residential Wiring Test 1

Front 1

The open-circuit voltage between the two terminals of a single pole switch on a lighting circuit when the switch is in the off position is

Back 1

120 volts

Front 2

An arc flash can produce temperatures of _______ degrees Fahrenheit.

Back 2

35,000

Front 3

Listing and labeling of electrical equipment is done by a ______?

Back 3

Recognized testing Laboratory

Front 4

The purpose of electrical symbols on plans is ______?

Back 4

To provide a code to prevent untrained persons from doing electrical

Front 5

The national electrical code is a minimum ______ standard

Back 5

Safety

Front 6

The meaning of approved is ______?

Back 6

Acceptable to the authority having jurisdiction

Front 7

All measurements in the National electrical code are shown in which systems of unit

Back 7

Both inch-pounds and metric value

Front 8

In the industrial System of Units the prefix kilo means ______?

Back 8

Thousand

Front 9

Nationally recognized Testing Laboratories ______ electrical products to provide the basis of approval by inspectors in the field

Back 9

Test and list

Front 10

Devices are equipment who's primary function is to carry current not

Back 10

Utilize electric energy

Front 11

All the following items of electrical equipment are devices except for a _____.

Receptacle

Three-way switch

Lamp

Disconnect switch

Back 11

Lamp

Front 12

The NEC requires that a _____ be installed at each conductor splice connection point

Back 12

Box or conduit body

Front 13

In the International System of Units the prefix milli means _____?

Back 13

One thousandth

Front 14

In order that connections inside an outlet box remain accessible NEC requires that a surface extensions from an outlet box cover be made using ____

Back 14

Flexible conduit

Front 15

Electrical wall boxes should not be mounted back-to-back in walls because

Back 15

Sounds may be transferred from room to room

It reduces the fire resistance of the wall

The practice violate building codes

Front 16

According to ______ unused Knockouts and other openings in electrical boxes and cabinets are required to be closed

Back 16

Article 100

NEC 110 .12 a

Front 17

Device faceplates must be mounted so as to

Back 17

Cover the opening in the wall

Feet against the wall surface

Front 18

A receptacle Outlet is _____

Back 18

A contact device for the connection attachment plug

Front 19

Where non-combustible surface material is used on walls or ceiling outlet boxes must be mounted so that they will be back not more than ______ from the face of the surface material

Back 19

1/4 inch

Front 20

As defined in article 100 a dwelling unit has the following features

Back 20

Permanent Provisions for living sleeping cooking and sanitation

Front 21

A 20 ampere Appliance circuits required by NEC are permitted to serve no other load except for

Back 21

One outdoor GFCI protected receptacle

Front 22

NEC article 210 provides --- guidelines for locating receptacles outlets in Residence

Back 22

Mandatory

Front 23

Wall receptacles in a habitable room must be placed so they are no further than --- from any point along the wall

Back 23

6 feet

Front 24

A continuous load shall not exceed --- of the rating of the branch circuit

Back 24

80%

Front 25

Where fixed glass panes do not permit installation of wall mounted receptacle --- are typically used to satisfy the receptacle spacing required of the NEC

Back 25

Floor mounted receptacles

Front 26

In construction of one and two family dwellings the electrical circuits are usually designed by the

Back 26

Electrician

Front 27

The minimum lighting load requirement for dwelling units is --- per square foot

Back 27

3 volt amperes

Front 28

How is track lighting load in Residence calculated?

Back 28

It is considered to be part of the general lighting load of 3 volt amperes per square foot

Front 29

A 20 ampere branch circuit requires --- AWG conductors ignoring the effects of voltage drop

Back 29

12 copper

Front 30

Small appliance receptacle Outlets --- included in the three volt ampere per square foot load calculation

Back 30

Are not

Front 31

12 foot rule for spacing receptacles applies to all of the following areas of the house except for

Back 31

The Attic

Front 32

The National Electric Code requires receptacles installed in a garage to be

Back 32

GFCI protected

Front 33

All of the following are included when calculating an unused area of a dwelling to compute the required lighting load except for

Back 33

Crawl space

Front 34

Name several factors that may be taken into account when sizing boxes per the NEC

Back 34

Wire size ,

Amount of wiring in a box ,

Number of outlets being installed

Front 35

Explain what is meant by a normal cage rating

Back 35

A piece of equipment that will use plus or minus 10%

Front 36

What is the purpose of the National Electric Code?

Back 36

The safeguarding of persons and property from electrical hazards

Front 37

How is an outlet defined by the NEC?

Back 37

A point on the wiring system at which current is taken to supply utilisation equipment

Front 38

Explain the requirements for installing lighting fixture more than 50 pounds

Back 38

The Box must be rated for the weight of the lighting

Front 39

Explain the difference between a receptacle and a receptacle Outlet

Back 39

A receptacle is a contact device installed at the outlet for connection attachment plug

A receptacle Outlet is an outlet one or more receptacles are installed

Front 40

Explain why the code in general discourages mounting receptacle below the edge of kitchen countertops

Back 40

Children are able to reach them

Front 41

Calculate the minimum number of 15 ampere lighting Branch circuits required 1850 square feet

Back 41

3 amperes X 1850 feet

/ 120 volt

Equals 46.25 amps

46.25 divided by 15

Equals 3.083

4 ampere lighting branch circuits are required

Front 42

What is the NEC definition for a qualified person

Back 42

A person who is skilled and knowledgeable relating to the construction and operation of electrical equipment and installation, and has safety training to recognize hazards.

Front 43

What is meant by fire resistance rating?

Back 43

The amount of time a wall can resist a fire

Front 44

Name the kitchen receptacles that are not required to be protected by ground fault circuit interrupters

Back 44

All designated Outlets such as microwave , gas range, refrigerator

Front 45

In walls or ceilings constructed of non combustible materials such as concrete or tile The Edge outlet boxes permitted to be set back not more than --- from the finished surface

Back 45

1/4 inch

Front 46

Nationally recognized Testing Laboratories test and evaluate products for

Back 46

Safety

Front 47

Receptacles are not permitted to be mounted directly over --- heaters in residential construction

Back 47

Baseboard

Front 48

The Authority having jurisdiction over electrical construction is generally the

Back 48

Local inspector

Front 49

Device boxes are designed for what size screws

Back 49

6 - 32 in and 10 - 32 inch

Front 50

Where there are --- or more on the interior stairway a wall switch control stairway lighting must be provided on each floor level and level has an entryway

Back 50

6 risers

Front 51

--- provide additional information about a job that may not be found on the blueprints

Back 51

Specifications

Front 52

Lighting outlet boxes are designed for what size screws?

Back 52

8 - 32 inch and 10 - 32 inch