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ICC Master Electrician (R16)
Try 10 questions weighted like the real ICC R16 exam — services, branch circuits, wiring methods, special occupancies and motors — on the 2023 NEC. You get a score for each area and a worked explanation for every calculation.
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The ICC Master Electrician exam (R16) is 100 questions in 5 hours, open book, and you need 75% to pass, more than the journeyman exam's 70%. It weighs services and general knowledge, including plan reading, more heavily than the journeyman outline.
Related reading

ICC Master Electrician Exam Day (R16): Pearson VUE, Your Two Books, and Pacing 5 Hours
What to expect on the ICC Standard Master Electrician exam (R16) at a Pearson VUE center: the 2023 NEC and Ugly's, four-option questions, pacing 100 questions in 5 hours, the 75% pass mark and the 10-day retest wait.

What's on the ICC Master Electrician Exam (R16)? All 9 Areas and How to Study Them
The ICC outline for the Standard Master Electrician exam (R16): 100 questions across 9 areas, with more weight than the journeyman exam on general knowledge and plan reading, services and motors, on the 2023 NEC — and a study plan built on the weights.

ICC Master Electrician Exam (R16): Requirements, Cost, and Who Accepts It
What the ICC Standard Master Electrician exam (R16) takes: no ICC experience rule, the $120 fee, the 75% pass mark, the four NEC-edition series, which cities and counties accept it, and why your jurisdiction sets the license rules.