PSI Contractor License Exam — Electrical Practice Test

191 questions available

Build your confidence for PSI Contractor License Exam — Electrical. Practice the concepts, understand the answers, and strengthen your knowledge one question at a time.

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Certification exam
100 Exam questions
3 hours Time Limit
Your practice
191 Practice questions
3 hours 11 minutes Practice Time
Try 5 free questions
No account needed. A free account includes 20 questions for this exam.
The bar to clear 70 Published passing score for this certification.
Explore exam topics Official objectives from NASCLA
NASCLA191 practice questions

Exam overview and details

The PSI Contractor License Exam - Electrical is a state-administered assessment designed to evaluate the technical knowledge, code comprehension, and business practices required to perform electrical contracting work safely, legally, and competently. This exam is typically a mandatory step for individuals seeking to obtain a journeyman or master electrician license, or to qualify as an electrical contractor who can bid on projects, pull permits, and oversee electrical installations. It rigorously tests a candidate's understanding of the National Electrical Code (NEC), state and local amendments, electrical theory, wiring methods, safety protocols, and relevant business and law topics such as licensing, contracts, and project management. Successfully passing this exam demonstrates to state licensing boards, clients, and employers that the candidate possesses the foundational expertise necessary to protect public safety and ensure code-compliant work.

Sample Questions

Choose an answer and explore the explanation to see how practice works.

Wiring Methods & Materials

A wet-location box outdoors has threaded hubs but no weatherproof cover on an in-use receptacle. What is required?

General Code Requirements

A contractor wants to use the earth as the only equipment grounding path to a detached sign. What does the NEC require?

Wiring & Protection

A 20 A branch circuit supplies cord-and-plug equipment in a wet processing area. Which device should be checked for personnel shock protection?

Wiring & Protection

A feeder breaker is used as a switch for daily operation of lighting. What must be verified?

Wiring & Protection

A single receptacle on an individual branch circuit supplies a 20 A cord-and-plug load. What rating must the receptacle have?

Exam insights and study advice

Passing this exam is not merely a bureaucratic hurdle; it is a direct validation of your professional capability. In the real world, this license is your legal authority to operate. It allows you to pull permits for jobs, ensuring installations are inspected and meet safety standards. It protects the public from fire and shock hazards by confirming you understand the NEC. For your business, it builds credibility, enables you to bid on larger projects, and is often required for insurance. Ultimately, it separates qualified professionals from unqualified handymen, safeguarding your livelihood and community safety.

What this exam covers

01Business and Law

02Contract Law and Project Management

03Electrical Systems Design and Installation

04Financial Management

05National Electrical Code (NEC)

06Safety (OSHA)

Exam Details PSI-EC | $55 USD | 3 hours

Exam Code PSI-EC
Vendor NASCLA
Exam Cost $55 USD
Passing Score 70
Time Limit 3 hours
Exam questions 100
Question TypesMultiple Choice
Retake Policy Retake policies vary by state licensing board and PSI exam rules. Check your state contractor licensing board and PSI candidate handbook for applicable waiting periods, attempt limits, and retake fees.
Exam Format Computer-based at PSI testing centers

Frequently Asked Questions

Which edition of the National Electrical Code (NEC) does the exam use?

What reference materials am I allowed to bring into the exam?

How should I best prepare for the code-related questions?

Are there math and calculation questions on the exam?

What is the format of the exam, and how long do I have?