Free practice test
Free Electrician Practice Test
Take our free electrician practice test with 20 questions covering NEC code, grounding and bonding, and load calculations. See your score instantly.
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- State-specific content
This free electrician practice test includes 20 multiple-choice questions drawn from the same subject areas covered on journeyman and master electrician licensing exams. Questions cover the National Electrical Code (NEC), grounding and bonding, load calculations, wiring methods, and overcurrent protection.
After you submit, you will see your score, the correct answer for each question, and a plain-English explanation. Use missed questions to identify the NEC articles you need to review before your exam.
These questions are for study practice only and are not official exam questions. ExamsLib is not an official licensing authority. Passing this practice test does not guarantee a passing score on your state licensing exam.
These questions are for study practice only and are not official exam questions.
Question 1
Question 2
What is the difference between grounding and bonding?
Question 3
Which conductor connects the grounded circuit conductor (neutral) to the grounding electrode at the service?
Question 4
Which of the following is a recognized grounding electrode type?
Question 5
In a residential installation, the equipment grounding conductor (EGC) in a branch circuit is normally identified by which color or marking?
Question 6
A metal water piping system is being used as a grounding electrode. Where must the bonding connection to this electrode be made?
Question 7
Bonding is required on metal gas piping in a building primarily to:
Question 8
What is the function of the grounding electrode conductor (GEC)?
Question 9
In a separately derived system (such as a transformer secondary), where is the system bonding jumper installed?
Question 10
Why is the neutral conductor NOT bonded to the equipment ground bar in a subpanel (remote distribution panel)?
Question 11
Which of the following best describes the purpose of a ground rod as a grounding electrode?
Question 12
A single ground rod is installed and tested. Its measured resistance to earth is 35 ohms. What additional action is generally required?
Question 13
An equipment grounding conductor (EGC) must be sized based on which of the following?
Question 14
When metal conduit serves as the equipment grounding conductor, which condition is most critical to ensure it provides an effective fault-current path?
Question 15
What is the standard unit used to express electrical power in load calculations?
Question 16
Using Ohm's Law, if a 120 V circuit has a resistance of 12 ohms, what is the current flowing?
Question 17
What does 'demand factor' mean in load calculations?
Question 18
A 240 V, 20 A circuit feeds a water heater. What is the load in volt-amperes (VA)?
Question 19
In a standard residential load calculation, what general lighting load value (in VA per square foot) is commonly used for dwellings?
Question 20
A residential dwelling has 2,000 sq ft of living space. Using 3 VA/sq ft for general lighting and applying 100% demand on the first 3,000 VA and 35% on the remainder, what is the calculated general lighting demand load?
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Frequently asked questions
What topics does this electrician practice test cover?
The practice test covers NEC code, grounding and bonding, load calculations, wiring methods, and overcurrent protection. Questions are drawn from the same subject areas tested on most state journeyman and master electrician licensing exams.
How many questions are on the practice test?
This free practice test contains 20 multiple-choice questions. A passing score for practice purposes is 70 percent or better (14 out of 20 questions correct).
Is this practice test the same as the real electrician licensing exam?
No. These questions are for study practice only and are not official exam questions. The real licensing exam is administered by your state licensing board or its approved testing provider. ExamsLib is not an official licensing authority.
Can I retake the practice test?
Yes. You can take the practice test as many times as you need. A different set of questions may be assembled from the question bank on each attempt, giving you fresh practice opportunities.
Do I need to create an account to take the practice test?
No account or login is required. The practice test is completely free and your results are saved locally in your browser.
