Inspections and the licensing exam

Why it matters

Two gates stand between an apprentice and independent work: passing inspections on the jobs you help build, and passing the licensing exam after your supervised hours. Both reward the same habits: knowing the code book well enough to find answers fast, and checking your work against a list before someone else does. This lesson shows what inspectors look for and how to plan journeyman exam study.

Awareness level only. Nothing on this platform replaces a registered apprenticeship or the supervised field hours your state requires. Inspections are requested by the licensed contractor responsible for the job, and apprentices work under a licensed electrician's supervision.

What an inspector checks

Inspections are staged so that work is checked before it is covered up.

Rough-in (walls open):

• Boxes are the right type and size for their fill and are securely fastened, set to finish flush with the wall surface.
• Cables are supported and secured within the required distances of boxes, protected where they pass through framing near the edge, and not damaged.
• Conductor sizes match the breaker sizes on the plan.
• Equipment grounding conductors are connected together in every box.
• Required receptacle spacing, kitchen and bathroom circuits are in place.
• Working space is clear in front of the panel location.

Service: the main bonding jumper, grounding electrode conductor and electrodes, service conductors, clearances and meter base.

Final (finished):

• Devices installed, cover plates on, GFCI and AFCI protection where required and tested.
• Panel directory filled in, breakers matching circuit conductors, no open knockouts.
• Smoke alarms and other listed equipment installed per instructions.

Inspectors cite code sections when they fail an item. Learning from correction notices is one of the fastest ways to learn the code.

The journeyman exam

Requirements vary by state, so check your state licensing board's official site for current rules (checked on 2026-10-23). In general:

• Eligibility: documented supervised hours (often around 8,000, typically through a registered apprenticeship of about four to five years; see Apprenticeship.gov) plus classroom hours.
• Format: usually a timed, multiple-choice, open-book exam taken at a testing centre run by an exam provider. The candidate handbook lists the code edition, allowed books, whether tabs and highlighting are allowed, and the topic weighting.
• Content: code navigation, definitions, calculations (conductor sizing, voltage drop, load calculations, box and conduit fill, motors), grounding and bonding, wiring methods and, in many states, theory and state law.

How to study

1. Get the right book. Buy the edition named in the candidate handbook, not just the newest one. Tab it as the handbook allows.
2. Learn the index. Time yourself finding answers. Most questions are findable within about two minutes if you know where to look.
3. Practise calculations by hand with the same calculator you will be allowed to bring.
4. Use timed practice exams. Track which articles cost you the most time and revisit those.
5. Make a weekly plan. For example, six to ten weeks of three or four sessions, one article group per week, with a full practice exam every other week.
6. Exam day: answer the quick ones first, flag the long calculations and come back; never leave a question blank if there is no penalty for guessing (check the handbook).

Worked example: a study week

Week 4 (calculations):

• Monday: conductor ampacity and derating, 20 practice questions.
• Wednesday: voltage drop and conduit fill, 20 questions.
• Friday: dwelling load calculation, two full worked problems.
• Sunday: 50-question timed mixed set; log every miss with the section number.

Common mistakes

• Studying from an edition that does not match the exam.
• Reading the code cover to cover instead of practising finding things.
• Ignoring the state law and business portion of the exam.
• Treating failed inspections as personal rather than as free lessons.

Quick recap

Inspections happen at rough-in, service and final, and check what will be hidden before it is hidden. The journeyman exam is usually open book and timed, so speed with the index and the calculations matters most. Check eligibility, edition and allowed materials on your state board's site and the candidate handbook, and plan steady weekly study.

Try it

Open the Do tab and build an inspection checklist and a personal exam study plan on paper.