What's on the Wisconsin Residential Journeyman Electrician Exam? Topics, Code Changes, and a Study Plan

What's on the Wisconsin Residential Journeyman Electrician Exam?

The Department of Safety and Professional Services does not publish a content outline for the residential journeyman exam, and it publishes no pass rates. What it does publish is the format and the references, and those are enough to plan around.

The format

• 100 questions
• 4 hours
• Open book, 70% to pass
• Questions on the 2023 NEC, in effect in Wisconsin since September 1, 2026, and reflected in the exam questions from October 1, 2026
• The Wisconsin rules: SPS 316 (the state electrical code) and SPS 305 (credentials)

How our practice exams weight it

Because DSPS publishes no weights, the split below is our own blueprint, built from the NEC chapters and the Wisconsin rules a residential exam draws on. It is how our 100-question practice exam is weighted, not an official DSPS breakdown.

The top three areas are 46 questions between them. Against our blueprint for the general Wisconsin Journeyman exam, the residential split puts more weight on branch circuits and dwelling load calculations, services, and wiring methods, and much less on motors, transformers and special occupancies.

What that means for a residential candidate

• Branch circuits — the dwelling rules in Article 210: required circuits, receptacle placement, and GFCI and AFCI protection.
• Dwelling load calculations — the service and feeder calculations in Article 220, including the neutral.
• Services — Article 230, and the Wisconsin changes to it below.
• Wiring methods and boxes — cable, raceway and box-fill rules in Chapter 3.

On the 2023 NEC

Wisconsin moved straight from the 2017 NEC to the 2023 NEC, so study material written for the older edition numbers several load-calculation rules differently:

The EV row matters on the residential side: a dwelling load calculation that includes a charger now has a rule for it.

Wisconsin's changes to the NEC

Subchapter IV of SPS 316 holds Wisconsin's changes, additions and omissions to the NEC, organized by NEC article. Where the two disagree, the SPS 316 wording is the rule in Wisconsin. Two that bear on residential services:

• SPS 316.230 (3) (b) adds a department rule to NEC 230.70 (A) — raceways containing service conductors, or service-entrance cable not in a raceway, may not extend more than 8 feet into a building to the service disconnect.
• Under SPS 316.230 (4), the emergency disconnect requirements of NEC 230.85 are not included as part of Wisconsin's code.

Tab your binder's copy of SPS 316 next to the matching NEC articles (210, 220, 230, 250 and so on) so you check both every time.

A study plan

1. Branch circuits and dwelling load calculations first. 18 of the 100 questions on our blueprint, and they feed the service questions.
2. Then services, feeders and wiring methods — another 28 between them.
3. Grounding and bonding, from the service to the branch circuit.
4. Learn the 2023 numbering. If your notes cite Table 220.12 or Article 725, update them to the table above.
5. Read SPS 316 and SPS 305 once, start to finish. They are short, and they go in your binder.
6. Sit a timed, full-length exam. 100 questions in 4 hours is 2.4 minutes each — open book helps only if you know where to look.

Our free practice test gives you 10 questions on the 2023 NEC. The full exam prep has a timed 100-question practice exam built on the blueprint above, with calculations worked out step by step and every answer citing its section. For the day itself, see Wisconsin Residential Journeyman Electrician exam day, and for every Wisconsin exam we cover, the Wisconsin electrician hub.