ICC F16 Master Electrician Exam (2014 NEC) Practice Exam
ICC is retiring this exam. From December 1, 2026 it is no longer available for registration through Pearson VUE (ICC Exam Catalog, checked October 23, 2026). The version on the 2017 NEC, ICC G16, has no retirement date listed, and we have a practice test for it.
Free Practice Exam
Test your knowledge with 10 questions from our pool of 20 free questions.
- 10 questions per attempt
- 30 minute time limit
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Full Practice Exam
Complete exam simulation matching the real Pearson VUE test format.
- 100 questions (same as real exam)
- 300 minute time limit
- 9 topic areas covered
- 527 questions in pool
- Detailed explanations
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ICC F16 Master Electrician (2014 NEC) Practice Exam Guide
What's on the exam
Questions per topic, out of 100This practice exam follows the official content outline for the ICC F16 Master Electrician (2014 NEC) exam: General Knowledge, Services and Service Equipment, Feeders, Branch Circuits and Conductors, Wiring Methods and Materials, Equipment and Devices, Control Devices, Motors and Generators, Special Occupancies, Equipment, and Conditions.
- Free practice exam: 10 questions per attempt, retake as often as you like.
- Full practice exam: 100 questions on a 5 hours clock, a new draw from our bank every attempt.
General Knowledge 12 items
Our study plan for this topic: Electrical Theory and General Electrical Load Calculations; Code Definitions and Terms; Plan Reading; NEC Purpose, Scope, and Code Arrangement; Equipment Approval, Listing, and Labeling Requirements; General Installation Requirements (Article 110); Working Space and Clearances Around Electrical Equipment; Conductor Materials, Sizes, and Temperature Ratings.
Services and Service Equipment 16 items
The outline lists: Services and Fault Current; Service Load Calculations; Service Equipment & Service Conductors; Transformers; System Grounding and Bonding; Temporary Service Wiring; Service entrance conductor installation methods and clearances; Service disconnecting means requirements and ratings.
Feeders 4 items
Our study plan for this topic: Load Calculations; Equipment Grounding; Feeder conductor sizing and ampacity requirements; Overcurrent protection for feeders; Feeder neutral load calculations and demand factors; Outside feeders: clearances, conductor sizing, and disconnecting means; Demand factors for dwelling and non-dwelling feeder loads; Ground-fault protection of equipment for feeders.
Branch Circuits and Conductors 16 items
Our study plan for this topic: Branch Circuit Calculation; Overcurrent Protection; Conductors; Required Outlets & GFCI/AFCI Protection; Equipment Grounding; Voltage Drop Calculations (Single-Phase and Three-Phase); Conductor Insulation Types and Application Environments; Ampacity Correction and Adjustment Factors.
Wiring Methods and Materials 19 items
The outline lists: Raceway Installations; Underground Wiring Methods; Boxes and Enclosures; Cabinets, Panelboards, & Switchboards; Clearance and Guarding; Flexible Cords and Cables; Cable Wiring Methods (NM, AC, MC, MI, SE, UF, TC, MV, FCC, FC, IGS cable types); Conduit and Tubing Types (RMC, IMC, EMT, FMC, LFMC, PVC, HDPE, RTRC, ENT, LFNC, FMT).
Equipment and Devices 10 items
Our study plan for this topic: Luminaires; Receptacles, Switches and Other Devices; Appliances and Other Equipment; Other Utilization Equipment; Heating and Cooling Equipment; Fixture Wire Types, Ampacity, and Installation Requirements; NEMA Receptacle and Plug Configurations; Lighting Track Installation and Construction Requirements.
Control Devices 3 items
Our study plan for this topic: Switches, Disconnects and Controllers; Motor controller ratings and markings (horsepower, voltage, short-circuit current); Motor control circuit overcurrent protection and wiring (Article 430 Part VI); Motor disconnecting means types, location, and ampere ratings; Motor control center construction, overcurrent protection, and grounding; Class 1, Class 2, and Class 3 remote-control circuit classifications and power source requirements; Stop-start station wiring and control relay circuits (jogging, hand-off-automatic); Industrial control panel overcurrent protection, short-circuit current rating, and disconnecting means.
Motors and Generators 8 items
Our study plan for this topic: Motors; Generators; Motor branch-circuit conductor sizing (125% FLC rule); Motor branch-circuit short-circuit and ground-fault protection (Table 430.52); Motor overload protection (sizing and placement of overload devices); Motor disconnecting means (type, location, and rating requirements); Motor controllers (ratings, types, and design requirements); Motor control centers (overcurrent protection, grounding, and busbar requirements).
Special Occupancies, Equipment, and Conditions 12 items
The outline lists: Special Occupancies; Swimming Pools and Similar Installations; Mobile Home and RV Parks; Data Processing Equipment; Miscellaneous Special Equipment; Emergency Systems; Signaling and Fire Alarm Systems; Hazardous (Classified) Locations — Class I, II, and III Division and Zone Classification.
Sample 1 — Wiring Methods and Materials
Question: A pull box is installed in a raceway run containing 3/0 AWG insulated conductors. The pull is straight through the box. Raceways entering the box are trade size 2-1/2, trade size 2, and trade size 1-1/2. What is the minimum required length of the box?
- A. 30 in.
- B. 15 in.
- C. 20 in.
- D. 24 in.
Correct Answer: C
Per NEC 2014, 314.28(A)(1), in straight pulls the length of the box shall not be less than eight times the metric designator (trade size) of the largest raceway: 8 × 2-1/2 = 20 in. The smaller raceways are not added for a straight pull.
Reference: NEC 2014 Section 314.28(A)(1)
Sample 2 — Services and Service Equipment
Question: In a multiple-occupancy building, each tenant's metal water piping system is metallically isolated from all other occupancies by nonmetallic water piping, so each piping system is bonded to the equipment grounding terminal of the panelboard supplying that occupancy. How is that bonding jumper sized?
- A. From Table 250.122, based on the overcurrent device rating
- B. From Table 250.66, based on the feeder conductor size
- C. From Table 250.122, based on the panelboard bus rating
- D. From Table 250.66, based on the service-entrance conductor size
Correct Answer: A
NEC 2014, 250.104(A)(2) permits the isolated metal water piping of each occupancy to be bonded to the equipment grounding terminal of the switchgear, switchboard, or panelboard supplying that occupancy, with the bonding jumper sized per Table 250.122 based on the rating of the overcurrent protective device for the circuit supplying the occupancy. The general rule of 250.104(A)(1) using Table 250.66 does not apply in this case.
Reference: NEC 2014 Section 250.104(A)(2)
Sample 3 — Branch Circuits and Conductors
Question: Branch circuits other than individual branch circuits must be rated in accordance with the maximum permitted ampere rating or setting of the overcurrent device, and only certain ratings are recognized. Which of the following ampere ratings is NOT a recognized rating for a multioutlet branch circuit?
- A. 25 amperes
- B. 30 amperes
- C. 50 amperes
- D. 40 amperes
Correct Answer: A
Per NEC 2014, 210.3, the rating for other than individual branch circuits shall be 15, 20, 30, 40, and 50 amperes. Although 25 A is a standard overcurrent device rating, it is not a recognized multioutlet branch-circuit rating.
Reference: NEC 2014 Section 210.3
- Your results break the score down by outline topic.
- The real exam's passing score: 70% correct.
- Keep practicing until you pass consistently, not just once.
- Answer what you know first and bookmark the rest. Our practice exams let you bookmark and come back.
- Work your bookmarks on the second pass.
- Real exam pace: about 3 minutes per question.
- After each attempt, look up every miss in your book.
| Questions | 100 questions |
| Time limit | 5 hours |
| Passing score | 70% correct |
| Books in the exam room | Open book |
| Exam fee | $120 |
- Results for examinations taken electronically are available immediately after the examination is completed.
- You must wait 10 days before retaking a failed exam.
Source: National Contractor/Trades Examination Information Bulletin, PUBLISHED June 30, 2026; ICC Exam Catalog, checked October 23, 2026. Check the bulletin before test day: fees and rules can change.