New Mexico Residential Electrical Wiring (ER-1) Contractor License

The Residential Electrical Wiring (ER-1) Contractor License allows you to do the following work:

  • Electrical systems and wiring methods of 5000 volts, nominal or less at residential one and two-family dwelling units
  • Multi-family dwellings when all such units are on the ground floor with no occupancies above or below

May not contract for more than four dwelling units in any single building or structure. Does not include wiring for commercial use, such as motels, hotels, and similar occupancies.

How to Get the Residential Electrical Wiring (ER-1) Contractor License in New Mexico?

  1. Apply for eligibility throughPSI©:
  2. Send the complete documents and application fees to PSI©:
    2820 Broadbent Pkwy NE Suites E & F
    Albuquerque, NM 87107

    877-663-9267
  3. When approved by PSI©, apply for the Residential Electrical Wiring (ER-1), and Business and Law examinations:
  4. After passing the examinations, candidates must gather the following list of documents:
  5. Send all forms to the following PSI© address:
    2820 Broadbent Pkwy NE Suites E & F
    Albuquerque, NM 87107

    (877) 663-9267
  6. Upon approval, the license will be sent via USPS.

For all applicants interested in applying outside of New Mexico, complete theOut-Of-State Testing Request Instructions.

New Mexico Residential Electrical Wiring (ER-1) Contractor License Exam Prep Courses

  • Login credentials emailed upon enrollment

    Unlimited access (no time limits)

    Lecture videos

    Practice questions

    Key concepts

    Step-by-step solutions to math problems

    $525.00
    $525.00
  • Login credentials emailed upon enrollment

    Unlimited access (no time limits)

    Lecture videos

    Practice questions

    Key concepts

    Step-by-step solutions to math problems

    $340.00
    $340.00

New Mexico Residential Electrical Wiring (ER-1) Contractor License Exams

Below is all the information related to the trade and Business and Law exams, including the official reference lists.

New Mexico Residential Electrical Wiring (ER-1) Contractor Trade Exam

  • Testing Method: Computer-based testing
  • Testing Company: PSI©
  • Number of Questions: 80
  • Types of Questions: Multiple choice
  • Time Allowed: 180 Minutes
  • Minimum Passing Score: 75% (60 points)
  • Subjects Involved (No. of Questions):
    • General Knowledge and Electrical Installation Requirements (17)
    • Services, Feeders, and Branch Circuits (17)
    • Overcurrent Protection (4)
    • Grounding and Bonding (8)
    • Conductors and Cables (9)
    • Raceways and Boxes (9)
    • Special Occupancies and Special Equipment, including Pools (3)
    • Lighting and General-Use Equipment (3)
    • New Mexico State Code (6)
    • Low Voltage (4)
  • PSI© Residential Electrical Wiring (ER-1) Official Content Outline

New Mexico Residential Electrical Wiring (ER-1) Contractor Business and Law Examination

  • Testing Method: Computer-based testing
  • Testing Company: PSI©
  • Number of Questions: 50
  • Types of Questions: Multiple choice
  • Time Allowed: 130 Minutes
  • Minimum Passing Score: 75% (38 points)
  • Subjects Involved (No. of Questions):
    • Licensing Requirements (8)
    • Estimating and Bidding (5)
    • Business Organization and Financial Management (8)
    • Tax Laws (5)
    • Labor Laws (4)
    • Project Management and Lien Law (5)
    • Contracts (8)
    • Risk Management (4)
    • Environmental and Safety (3)
  • PSI© Business & Law Official Content Outline

New Mexico Residential Electrical Wiring (ER-1) Contractor Book Set

This set of books includes all required references for the Residential Electrical Wiring (ER-1) and Business and Law exams. Orders placed before 2 PM are shipped the same day via UPS and a tracking number is emailed before 3 PM.

  • NEW MEXICO RESIDENTIAL ELECTRICAL WIRING (ER-1) - BOOK SET WITHOUT TABS INCLUDES ALL BOOKS FOR TRADE AND BUSINESS EXAMS

    Sales price: $461.91
  • NEW MEXICO RESIDENTIAL ELECTRICAL WIRING (ER-1) - BOOK SET WITH TABS INCLUDES ALL BOOKS FOR TRADE AND BUSINESS EXAMS

    Sales price: $521.91

New Mexico Residential Electrical Wiring (ER-1) Contractor Exam Books

Books Allowed in Testing

Books Not Allowed in Testing

New Mexico Residential Electrical Wiring (ER-1) Business and Law Examination Books

Books Allowed in Testing