Licensed Electrical Contractor Study Guide 2026

Everything you need to pass the Licensed Electrical Contractor exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.

📋 Licensed Electrical Contractor Exam Format at a Glance

100

Questions

240 min

Time Limit

75%

Passing Score

Take a Full Licensed Electrical Contractor Exam Simulation →

📚 Licensed Electrical Contractor Topics to Study (134)

Electrical Codes & Standards · 9 cards Electrical System Design & Installation · 9 cards Electrical Theory & Fundamentals · 9 cards Troubleshooting & Maintenance · 9 cards Branch Circuit Calculations · 7 cards Branch Circuit Calculations · 7 cards Branch Circuit Calculations · 7 cards Branch Circuit Calculations · 7 cards Business and Law Practices · 7 cards Business and Law Practices · 7 cards Business and Law Practices · 7 cards Business and Law Practices · 7 cards Business and Law Principles · 7 cards Business and Law Principles · 7 cards Business and Law Principles · 7 cards Business and Law Principles · 7 cards Business Law and Safety · 7 cards Business Law and Safety · 7 cards Business Law and Safety · 7 cards Business Law and Safety · 7 cards Code, Theory, and Calculations · 7 cards Code, Theory, and Calculations · 7 cards Code, Theory, and Calculations · 7 cards Code, Theory, and Calculations · 7 cards Electrical Codes & Standards · 7 cards Electrical Codes & Standards · 7 cards Electrical Codes & Standards · 7 cards Electrical Codes & Standards · 7 cards Electrical System Design & Installation · 7 cards Electrical System Design & Installation · 7 cards

See all 134 topics as flashcards →

✍️ Sample Licensed Electrical Contractor Questions & Answers

1. When calculating dryer load for a multifamily dwelling with 15 dryers, what demand factor applies per NEC Table 220.54?

✓ 47%

For 15 dryers, NEC Table 220.54 specifies a demand factor of 47%.

2. A contractor who abandons a project without legal justification may face all of the following EXCEPT:

✓ Mandatory criminal prosecution under federal law

Unjustified job abandonment is primarily a civil and licensing matter; it does not automatically trigger mandatory federal criminal prosecution, though fraud-related abandonment could involve criminal charges.

3. A 20A, 120V circuit is protected by a 20A AFCI breaker and also uses a GFCI outlet as the first device. A ground fault occurs downstream. Which device should operate first?

✓ The GFCI outlet, as it is closest to the fault

The GFCI outlet closest to the fault should trip first due to its faster response to line-to-ground current imbalance at that point.

4. What is the minimum required height for overhead service conductors crossing a commercial parking lot subject to truck traffic?

✓ 18 feet

NEC 225.18 requires overhead conductors to maintain at least 18 feet of clearance over areas subject to truck traffic.

5. What is the minimum rating required for any branch circuit that supplies two or more outlets or receptacles per NEC 210.3?

✓ 15 amperes

NEC 210.3 establishes that branch circuit ratings shall not be less than the maximum load to be served, with 15 amperes being the minimum standard rating.

6. Per NEC 334.80, what is the maximum ambient temperature rating for standard Type NM cable?

✓ 90°C

NEC 334.80 states that Type NM cable is rated at 90°C but the ampacity must be based on the 60°C column per the conductor temperature limitation.

🎯 Free Licensed Electrical Contractor Practice Tests

Electrical System Design & Installation · 9 questions Electrical Codes & Standards · 9 questions Electrical Theory & Fundamentals · 9 questions Troubleshooting & Maintenance · 9 questions Safety and OSHA Regulations · 7 questions Electrical Codes & Standards · 7 questions Electrical Codes & Standards · 7 questions NEC General Requirements · 7 questions NEC General Requirements · 7 questions NEC General Requirements · 7 questions

📖 Licensed Electrical Contractor Guides & Articles

Your Licensed Electrical Contractor Study Path

1. Learn with Flashcards → 2. Drill Practice Tests → 3. Take the Full Exam Simulation

🃏 Licensed Electrical Contractor Flashcards (883)🏆 Licensed Electrical Contractor Exam Simulation

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