Free Practice Test
New Mexico ER-1J Residential Journeyman Electrician
Try 10 questions drawn from both written parts of the ER-1J: open-book code questions on the 2020 NEC and closed-book theory you answer without the book. Every question cites its source, and none rests on a rule New Mexico amends unless it cites the state code. You get a score for each area and an explanation for every answer.
What you’ll get
Your Score
See your percentage as soon as you enter your name and email.
Topic Breakdown
Find out which topics you're strong in and where you need work.
Codebook Explanations
Unlock detailed explanations with exact code references.
Free With Your Email
Enter your name and email after the test to see your score and the questions you missed.
The New Mexico ER-1J is two written parts, scored separately at 75%: Part 1, 40 open-book code questions in 90 minutes, and Part 2, 25 closed-book theory questions in 60 minutes, plus a hands-on practical.
Related reading

New Mexico ER-1J Exam Day: What to Expect at PSI
Test-day logistics for New Mexico's ER-1J residential journeyman exam: PSI test centers, books for the open-book code part, the closed-book theory part, calculators, scoring, retakes and the practical.

What's on the New Mexico ER-1J Exam? PSI's Code and Theory Outlines
PSI's outlines for New Mexico's ER-1J residential journeyman exam: 40 open-book code questions and 25 closed-book theory questions, the New Mexico residential amendments that change answers, and how to study.

New Mexico ER-1J Residential Journeyman Electrician: Requirements and How to Apply
What New Mexico requires for the ER-1J residential journeyman electrician certificate: two years of experience, the CID application, PSI's code and closed-book theory parts and practical, fees and renewal.