Electrical Wiring Commerical

Question 1

All circuits between the service equipment and final branch-circuit overcurrent device is a __.

Accepted Answer

Feeder

Question 2

For a continuous load, the OCPD ampere rating and conductor must not be less than ____ or ____.

Accepted Answer

125%; 20 amps

Question 3

Where do you general find the definitions in the NEC book?

Accepted Answer

Article 100

Question 4

The symbol represents...

Accepted Answer

Three HP motor

Question 5

Parts in the NEC book are indicated with a ___________.

Accepted Answer

Roman Numeral

Question 6

Article 90 contains provisions considered necessary for which of the following?

Accepted Answer

Safety.

Question 7

What do the sections actually represent?

Accepted Answer

Codes

Question 8

A branch circuit are conductors between the final......

Accepted Answer

overcurrent device protecting the circuit and the outlets.

Question 9

What type of conduit comes in either in Schedule 40 or Schedule 80?

Accepted Answer

PVC

Question 10

What is the actual measurement of the knockout in a conduit box that has a trade size 1/2?

Accepted Answer

7/8 inch

Question 11

The nominal size of a product represents the ___________.

Accepted Answer

Trade size

Question 12

A continuous load is defined as one were the load is expected....

Accepted Answer

to operate for a period of 3 hours or more.

Question 13

What are the most common type of insulation used on a conductor?

Accepted Answer

Thermoplastic insulation

Question 14

What Article describes the placement of a receptacle outlet with respect to the basin?

Accepted Answer

210.52 (D)

Question 15

What color wire typically is un-grounded in an alternating current?

Accepted Answer

Black, Red and Blue

Question 16

What is the valve of electromotive force if the current is 10 Amps and the resistance is 2 Ω?

Accepted Answer

20 Volts

Question 17

What is a "traveler?"

Accepted Answer

A pair of wires in a three or four way system

Question 18

Article 90 does not cover _____________.

Accepted Answer

Aircraft

Question 19

Which of the following terms are not defined in NEC book......

Accepted Answer

Hot conductor

Question 20

NEC 240.24(B) requires all tenants shall have....

Accepted Answer

ready access to the overcurrent devices that protects wire.

Question 21

How many Chapters are in the NEC book?

Accepted Answer

9

Question 22

What is ambient temperature?

Accepted Answer

Surrounding temperature

Question 23

The symbol for conduit concealed or under floor slab is ______________.

Accepted Answer

A dotted line.

Question 24

Typical color coding for conduit wiring for a 120/240 volts, sing-phase, 3-wire is....

Accepted Answer

Black, white and red

Question 25

Electricians refer to the acronym EMT as ___________.

Accepted Answer

Electrical Metallic Tubing

Question 26

The preferred electrical symbols on a construction drawing for a single-pole switch is....

Accepted Answer

$ or S

Question 27

Who develops and sponsors the NEC book?

Accepted Answer

NFPA

Question 28

You must count the number of _______________ that will be installed in a raceway.

Accepted Answer

current-carrying conductors

Question 29

Conductors and equipment used on circuits over 600 volts, nominal, shall have floors that are..

Accepted Answer

no less than 102 mm thick.

Question 30

What is Ohm's Law?

Accepted Answer

E = IR

Question 31

The top parts of the receptacle will except.....

Accepted Answer

two "hot" plugs.

Question 32

The brass terminal on the switch, receptacle or plug attaches to the....

Accepted Answer

Black conductor

Question 33

What does the prefix Mega represent in exponential form?

Accepted Answer

106

Question 34

The top prong on the plug represents.....

Accepted Answer

Ground

Question 35

What is a volt-ampere?

Accepted Answer

A unit of apparent power.

Question 36

What is the unit of measurement for an electrical current?

Accepted Answer

Amps

Question 37

The largest wire that can be connected by wire binding screws is:

Accepted Answer

#10

Question 38

The installation of conductors and cables in wet locations can be found under Article:

Accepted Answer

310.10(C)

Question 39

A series circuit is.....

Accepted Answer

the current has only one path to flow.

Question 40

What can cause an arc blast?

Accepted Answer

Metal that falls into live parts of electrical equipment.

Question 41

In all cases work space shall permit a panel door to swing to which of the following degrees?

Accepted Answer

90

Question 42

In a series circuit, what is the total resistance if the resistors in the circuit are 5Ω & 10Ω?

Accepted Answer

15 Ω

Question 43

What does the acronym OCPD represent?

Accepted Answer

Overcurrent protective device

Electrical Wiring Commerical

Questions 43

Electrical Wiring Commerical

Questions 43