Deck 1: General Information for Electrical Installations

Question 1

What is the purpose of the National Electrical Code ?

Answer 1

The purpose of this Code is the practical safeguarding of persons and property from hazards arising from the use of electricity.

Question 2

An arc flash can produce temperatures of ____°F.

A) 3,500
B) 15,000
C) 25,000
D) 35,000

Answer 2

D

Question 3

Nationally Recognized Testing Laboratories (NRTL) ____ electrical products to provide a basis for approval by inspectors in the field.

A) approve
B) test and list
C) develop standards
D) endorse

Answer 3

B

Question 4

In the international system of units, the prefix kilo- means ____.

A) hundred
B) thousand
C) million
D) billion

Question 5

To prevent confusing detail in the working drawings, it is standard practice to include with each set of plans a set of detailed written ____________________ prepared by the architect.

Question 6

All measurements in the National Electrical Code are shown in which system(s) of units?

A) inch-pound (English)
B) SI (metric)
C) both inch-pound and metric values
D) both natural units and physical units

Question 7

The architect uses symbols and notations to ____ concerning electrical devices, appliances, and equipment.

A) allow bilingual plans by eliminating words
B) simplify the drawing and presentation of information
C) provide a code to prevent untrained persons from doing work
D) ensure that a contractor obtains the specified item

Question 8

In the international system of units, the prefix milli- means ____.

A) one hundredth
B) one thousandth
C) one millionth
D) one billionth

Question 9

For safety, it is very important that electrical equipment be "listed" by the ____.

A) NEC
B) OSHA
C) NRTL
D) ANSI

Question 10

The National Electrical Code is a minimum ____ standard.

A) quality
B) safety
C) product specification
D) electrical product listing

Question 11

As defined in Article 100 , a dwelling unit has the following feature(s): ____.

A) permanent provisions for living, sleeping, cooking, and sanitation
B) living, sleeping, and basement or storage areas
C) space for eating, sleeping, and recreation
D) optional garage space

Question 12

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 ____.

A) zero
B) 60 volts
C) 120 volts
D) 240 volts

Question 13

Always ____________________ the power before working on an electrical circuit.

Question 14

Nationally Recognized Testing Laboratories (NRTL) test and evaluate products for ____________________.

Question 15

What is the NEC definition of a "Qualified Person"?

Question 16

The authority having jurisdiction over electrical construction is generally the ____________________.

Question 17

The use of the word shall indicates a(n) ____________________ rule.

Question 18

The meaning of approved is ____.

A) listed by a Nationally Recognized Testing Laboratory (NRTL)
B) acceptable to the National Electrical Code
C) acceptable to the architect or engineer designing the job
D) acceptable to the authority having jurisdiction