Practice test

Electrician Practice Exam 1

Free 25-question electrician practice exam covering NEC grounding and bonding, load calculations, and code basics. Instant scoring with explanations.

These questions are for study practice only and are not official exam questions.

Question 1

1

What is the primary purpose of the equipment grounding conductor (EGC) in a branch circuit?

Question 2

2

Where is the grounded (neutral) conductor permitted to be bonded to the equipment grounding system in a typical service?

Question 3

3

The conductor that connects the equipment grounding conductors and service-equipment enclosure to the grounding electrode is called the:

Question 4

4

A single ground rod that does not have a resistance to earth of 25 ohms or less must be:

Question 5

5

What is the minimum size copper grounding electrode conductor required to a made electrode such as a driven ground rod?

Question 6

6

Bonding is best described as:

Question 7

7

The metal water piping system of a building must be bonded. Where the bonding jumper connects, it is generally sized based on:

Question 8

8

A grounding-type receptacle's grounding terminal must be connected to:

Question 9

9

Power in a purely resistive AC circuit is calculated as:

Question 10

10

A 1,500-watt resistive heater is connected to a 120-volt circuit. What current does it draw?

Question 11

11

What is the general lighting load value used for dwelling units in a standard load calculation?

Question 12

12

A continuous load is one that is expected to operate at its maximum current for:

Question 13

13

How many small-appliance branch circuits are required as a minimum in a dwelling kitchen/dining area?

Question 14

14

Each required small-appliance and laundry branch circuit is added to a dwelling load calculation at:

Question 15

15

A 240-volt, 3,000-watt resistive load draws approximately what current?

Question 16

16

What is the maximum continuous load permitted on a 20-ampere branch circuit?

Question 17

17

What is the standard ampacity rating used for a general-purpose 14 AWG copper conductor protected by a typical breaker?

Question 18

18

Receptacles installed in dwelling-unit bathrooms must have which protection?

Question 19

19

The standard mounting height for a wall switch, measured to the center, is commonly about:

Question 20

20

In a standard receptacle, the wider (longer) slot connects to the:

Question 21

21

What color insulation is required for a grounded (neutral) conductor 6 AWG and smaller?

Question 22

22

Receptacles on a dwelling-unit kitchen countertop must be spaced so that no point along the wall counter is more than:

Question 23

23

A green-colored screw or terminal on a wiring device indicates the connection point for the:

Question 24

24

How is outlet box fill determined?

Question 25

25

Nonmetallic-sheathed cable (Type NM, 'Romex') is generally permitted in:

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