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Tennessee CE Electrical Contractor Practice Exam

What This Practice Exam Covers

This practice exam is built for Tennessee electrical contractors preparing for the CE Electrical Contractor licensing exam — 100 questions, 300 minutes, passing score of 73%. The content tracks the official topic breakdown across 12 subject areas, from NEC installation requirements and grounding to motors, transformers, hazardous locations, and OSHA/NFPA 70E safety rules.

Free practice exam: 10 questions per attempt, drawn from a limited pool. You can retake it as many times as you want to get comfortable with the question format and difficulty level before committing to full prep.

Full practice exam: Mirrors the real exam exactly — 100 questions, 300-minute timer, scored at the end. Questions are pulled from a pool of 629+ items, so every attempt produces a unique exam. No two sittings are identical, which means repeated attempts build genuine knowledge rather than answer memorization. Questions map directly to the official topic weightings provided by the test provider.

What You'll Be Tested On

General Knowledge and Electrical Installation Requirements — 14 items
The largest single topic block. General Knowledge covers pre-work safety determinations, characteristics of energized systems, and regulatory framework (including 29 CFR 1926 Subpart V requirements). Electrical Installation Requirements tests your understanding of installation methods, conductor identification, labeling standards, and documentation obligations. Expect questions that combine a code section with a practical scenario — you need to know not just the rule but when and how it applies.

Building Code Requirements — 5 items
This section focuses on compliance with adopted building codes as they interact with electrical work — occupancy classifications, inspection requirements, and permit-related obligations. Questions tend to be conceptual rather than computational, but incorrect answers often come from confusing NEC requirements with state or local building code requirements.

Services, Feeders, and Branch Circuits — 10 items
Broken into three subtopics. Services questions address service entrance conductor sizing, clearances, and service equipment. Feeders require you to know load calculations and conductor ampacity rules. Branch Circuits is where conductor identification and labeling requirements appear — including NEC 210.5(C) rules for multi-system panelboards. Expect calculation-based questions alongside code-interpretation questions.

Overcurrent Protection — 4 items
Fewer questions, but they tend to be precise. You need to know standard and non-standard fuse and breaker ratings, rules for overcurrent device placement, and the conditions under which tap conductors are permitted. A single misread on an ampacity table can cost you a point here.

Grounding and Bonding — 10 items
One of the most heavily tested topic areas. Grounding questions cover grounding electrode systems, grounding electrode conductors, and equipment grounding. Bonding covers bonding jumpers — both main and equipment — and bonding requirements for metal raceways, piping, and structural steel. Candidates frequently confuse grounding with bonding; the exam tests that distinction directly.

Conductors and Cables — 8 items
Conductors: ampacity, temperature ratings, correction factors, and conductor sizing under various installation conditions. Cables: cable types (NM, MC, AC, USE, etc.), their permitted uses, and installation restrictions. You will likely need to use ampacity tables and apply both temperature and conduit-fill correction factors.

Raceways and Boxes — 8 items
Raceways covers conduit types (EMT, IMC, RMC, FMC, PVC), fill calculations, support and securing requirements, and permitted uses. Boxes covers box fill calculations, box selection for specific applications, and mounting requirements. Multi-step box fill calculations — counting conductors, devices, and fittings — appear regularly.

Hazardous Locations, Special Occupancies, and Special Equipment — 12 items
The second-largest topic block and one of the most code-intensive. Hazardous Locations tests classification (Class I/II/III, Division 1/2, and Zone systems), equipment marking, and documentation requirements per NEC Article 500. Special Occupancies includes healthcare facilities, places of assembly, and residential occupancies. Special Equipment covers equipment-specific rules that fall outside general wiring methods.

Low Voltage, Alarms, Signaling Systems, and Communications — 7 items
Covers Class 2 and Class 3 circuit requirements, fire alarm system wiring per NFPA 72 references in the NEC, signaling system installation, and communications wiring (Articles 800–830). Power-limited and non-power-limited circuit distinctions show up here regularly.

Lighting, Signs, and General Use Equipment — 6 items
Lighting covers luminaire installation, branch circuit requirements for lighting loads, and wet/damp location fixtures. Signs addresses the specific NEC rules for electric signs and outline lighting. General Use Equipment includes receptacles, switches, ceiling fans, and cord-and-plug connections.

OSHA and NFPA 70E Safety — 6 items
OSHA Safety draws from 29 CFR 1926 Subpart V — construction electrical safety standards. NFPA 70E Safety covers arc flash hazard analysis, approach boundaries, PPE requirements, and energized work permits. These questions are often overlooked during study but are entirely predictable if you know the standards.

Motors, Transformers, and Generators — 10 items
Motors: nameplate current, branch circuit sizing, overload protection, and disconnecting means. Transformers: sizing, overcurrent protection on primary and secondary sides, and grounding. Generators: transfer switch requirements, grounding of portable and standby generators, and output circuit protection.

Worked Sample Questions

Question 1 — General Knowledge and Electrical Installation Requirements

Before work begins on or near electric lines and equipment, what must be determined regarding existing characteristics and conditions?
- A. Only the nominal voltages of lines and equipment
- B. Only the locations of circuits and equipment
- C. Characteristics and conditions related to safety, including nominal voltages, hazardous induced voltages, condition of poles, and environmental conditions
- D. Only whether the lines are energized or de-energized

Correct Answer: C

The wrong answers here all use the word "only," which should trigger caution. The regulation requires a comprehensive pre-work determination, not a partial one. Per 29 CFR 1926, Subpart V, §1926.950(d), existing characteristics and conditions of electric lines and equipment related to safety must be determined before work starts — covering nominal voltages, maximum switching-transient voltages, hazardous induced voltages, protective grounds, circuit locations, pole condition, and environmental conditions. Any answer that limits the scope of that determination is incorrect.

Question 2 — Hazardous Locations, Special Occupancies, and Special Equipment

According to NEC Article 500.4(A), all areas designated as hazardous (classified) locations shall be properly documented. This documentation shall be available to which of the following?
- A. Only the building owner and the fire department
- B. Those authorized to design, install, inspect, maintain, or operate electrical equipment at the location
- C. Only licensed electrical contractors and their employees
- D. The general public and any interested parties

Correct Answer: B

Answers A, C, and D each restrict or expand access in ways the code does not support. NEC 2017 (Tennessee) Article 500.4(A) is explicit: documentation of classified locations must be available to those authorized to design, install, inspect, maintain, or operate electrical equipment at that location. This is a broader and more functional group than "owner and fire department," and it excludes the general public. Source: National Electrical Code 2017 (Tennessee), Page 500.4(A).

Question 3 — Services, Feeders, and Branch Circuits

You are installing a panelboard in a commercial building with both a 208Y/120-volt system and a 480Y/277-volt system. Per NEC 210.5(C)(1)(b), the label documenting conductor identification by phase and system must meet which requirement?
- A. The label must be laminated
- B. The label shall not be handwritten
- C. The label must be approved by the AHJ before installation
- D. The label must include the date of installation

Correct Answer: B

This question targets a specific durability and legibility requirement that candidates often miss because it seems minor. NEC 210.5(C)(1)(b) requires the identification label to be of sufficient durability for the environment and specifically prohibits handwritten labels. Lamination, AHJ approval, and date of installation are not requirements under this section. Source: NEC Handbook, Section 210.5(C)(1)(b).

How to Read Your Score

The passing score on the real exam is 73% — that means 73 correct answers out of 100. On your first practice attempt, treat your score as a diagnostic, not a verdict. A first attempt tells you where your knowledge is solid and where it has gaps; it does not tell you whether you will pass or fail the real exam.

If you score well above 73% on your first try, that is a good sign — but verify that your strong scores hold across the full topic range, not just the topics you happen to know. If you score near 73%, that usually means more work is needed before sitting for the real exam. A practice score of 75–78% leaves almost no margin for exam-day stress, time pressure, or unfamiliar question phrasing.

Use the topic-by-topic breakdown after each attempt to identify your weakest areas. If you are dropping points on Grounding and Bonding (10 items) or Hazardous Locations (12 items), those are high-priority areas because of their weight. Small improvements in heavy topics move your total score more than large improvements in light topics like Overcurrent Protection (4 items).

Where Candidates Lose Points

Grounding vs. bonding confusion. The exam tests this distinction repeatedly across the 10-item Grounding and Bonding section. Candidates who treat these as interchangeable lose multiple points.

Conductor identification and labeling details. NEC 210.5(C) questions — like Sample Question 3 above — hinge on specific requirements (handwriting prohibition, durability standard) that are easy to overlook during a fast read of the code.

Multi-step calculations left incomplete. Box fill and conduit fill calculations in the Raceways and Boxes section require counting every element correctly. Stopping one step short — applying ampacity without a temperature correction factor, or calculating conduit fill without accounting for all conductors — produces a wrong answer even when the method is right.

Scope errors in safety questions. OSHA and NFPA 70E questions often present answer choices that are partially correct. Selecting an answer that covers only one condition of a multi-condition requirement (as in Sample Question 1) is a common error pattern.

Time pressure on Motors, Transformers, and Generators. This 10-item section requires table lookups and multi-step calculations. Candidates who spend too long on earlier sections can run short of time here, rushing through calculations that need careful work.

Hazardous location classification errors. Class/Division/Zone distinctions and equipment marking requirements in the Hazardous Locations subtopic require precise code knowledge — guessing between Division 1 and Division 2 based on intuition rather than definition will cost points.

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