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NC Unlimited Electrical Contractor NEC 2020 exam prep. Go into the PSI state exam  prepared with the best Home Study Computer Program in North Carolina!



Click ADD TO CART or call Victor Rubio to get enrolled today! (980) 417-0160

The NC Electrical Contractor Unlimited license allows the licensee to engage in any electrical contracting project regardless of value.

The Contractors School offers the only Complete 3-in-1 System consisting of:

(1) New 2022 Home Study Computer Program with 20 excellent sample exams.

(2) Weekend Seminar or Webinar !

(3) Engineering tutoring help !

This Home Study Computer Program is a three (3) month subscription / enrollment and allows for unlimited Home Study, Seminars, and Tutoring for a three (3) month period !

Our sample exams simulate your actual PSI state exam! 

Questions, answers, and article references that you need to pass the new PSI state examination are contained in this new module. Choose this program if you are serious about passing your state exam with PSI. Go into the test prepared with the best computer study program in North Carolina!


Below is a small sample of our exam prep questions:

  1. Given that a 120/240 volt feeder supplies a household range rated at 7.6 kW, what will be the minimum branch-circuit overcurrent protection (OCP) for this counter-mounted cooking unit feeder?
    • Step_1: Use Column B, Number of Appliances Row 1 to find the demand load of 80%.
    • Step_2: Calculate the demand: 7,600 W x 0.80 = 6,080 Watts
    • Step_3: Use Ohm’s Law to calculate load I = P/E = 6,080 Watts / 240 Volts = 25.33 amps.
    • Step_4: Size minimum standard OCP based on Table 240.6(A), size up to 30 amps.
  2. Given a transformer diagram shows a configuration of 120/208 V, 3-Phase, Delta-Wye System. The system has three 14 kW, single-phase, continuous balanced loads, each connected 120 V line to neutral. Assuming each of the three loads are resistive, what would be the minimum fuse required to protect conductor A in the transformer feeder circuit?
    • Step_1: Using Ohm’s Law: I = P/E = 14,000 W / 120 V = 116.67 amps.
    • Step_2: Since loads are continuous, multiply by 125%: 116.67 amps x 1.25 = 145.83 amps.
    • Step_3: Per 310.16 75 deg C column size up 150 A, and a 1/0 AWG.
    • Step_4: Per Table 240.6(A) size up OCPD to 150 A.
  3. According to the NFPA 72, smoke detectors for door release service are to be closed in response to smoke flowing in either direction. Therefore, if the depth of wall section above the door is greater than 24 inches on both sides, how many ceiling-mounted or wall mounted detectors shall be required?
    • NFPA 72 – Smoke Detectors for Door Release Service. Two, one on each side of the doorway.

Our Home Study Computer Program running on your PC.

Reference Materials to bring to testing center:

1. The National Electrical Code, 2020 edition
2. National Fire Alarm Code, 2013 edition

Calculators, scratch paper and pencils will be provided at the test center. Only the references listed above will be allowed in the testing center; no other books or reference materials are permitted.

Personal notes (formulas/calculations) in pen are allowed!

In addition to the 2020 NEC and 2013 NFPA (if applicable), the examination will consist of questions concerning the following references:

1. Electrical Contractors Licensing Law (General Statutes Chapter 87, Article 4)
2. The Board’s Rules for the Implementation of the Electrical Contractors Licensing Law (Title 21, North Carolina Administrative Code, Chapter 18B)
3. NASCLA Contractors’ Guide to Business, Law and Project Management: North Carolina Electrical Edition.

These references are designed as “CLOSED BOOK” questions. That is, no candidate will be allowed to refer to any part of these documents during the examination.

North Carolina Examination Procedure Checklist:

Before registering for an examination, make sure that you have reviewed the following checklist.

▪ You must get authorization from the Board to take an examination.
▪ Complete the NC Board Examination Application Form and return it to the Board’s office with the a $90 money order ($30 application + 60 Examination).
▪ Upon the Board’s approval you will receive a Notice of Approval letter or email from the Board.
▪ Your authorization includes only one examination attempt. Should you fail the examination, you must re-apply to the Board for a new authorization.

Prepare for your examination

Study to pass your PSI state exam on the first try with our Home Study Computer Program (Click ADD TO CART above).

Schedule for your examination

Complete the registration form on line at, or call (855) 746-8173.

Take your examination

▪ You must bring two forms of valid (non-expired) identification, which bear your signature. One of these must have your photograph.
▪ Your name as shown on the state approved roster must exactly match the name on the photo I.D. used when checking in at PSI.
▪ Arrive 30 minutes prior to exam appointment.

After your examination:

▪ You will receive your results upon exam completion.
▪ Upon passing the examination, your results will automatically be made available to the Board for licensure.
▪ For licensing status information, go to or call the Board at (919) 733-9042.

Retest Rules

▪ A person who fails a qualifying examination shall not be eligible to take another examination in the same classification until three months after the date of the failed examination. However, a person can re-apply for a different license classification, and test for the different license (i.e. if you failed for Unlimited, you can resubmit a new application for the Intermediate license).
▪ A person who fails an examination in the same classification three times must satisfactorily complete a minimum of 16 hours of classroom education on the electrical code provided by a board-approved continuing education sponsor before retaking the examination.


Our interactive Exam Prep Program allows each license candidate to prepare and study for his state examination while in the comfort of his own home. Our practice exams actually simulate the experience of taking the computerized state examination. The questions, multiple choice answers, and article references have been professionally prepared by our research team to cover every subject area, code section, and calculations. Our sample tests questions are scrambled each time you test to simulate your actual state test experience.


This excellent program can be purchased and installed in just minutes, allows unlimited study and review time for a three month period, and runs on any Windows or Mac computer with an operating system. The program will run on your laptop without internet access allowing on-the-go study preparation.

Click ADD TO CART or call Victor Rubio to get enrolled today! (980) 417-0160