Becoming an Electrical Signing Supervisor or Electrical Inspector

Course Syllabus: This is a 40 hour detailed course in preparation for taking the State of Oregon examination for Electrical Signing Supervisors and Electrical Inspector Certification. The course will cover all of the National Electrical Code (NEC) Chapters, in conjunction with the Oregon Electrical Specialty Code (OESC), formal interpretations, and State of Oregon Rules and Statutes. There will be extensive study of the NEC requirements with home study of multiple choice questions for each attendee. In addition, there will be various types of electrical calculations that will include residential, commercial and industrial facilities.

Course content and time spent:

  • Review of home study questions of definitions NEC Chapters 1& 2, and in class calculations of Residential facilities (standard and optional).     8 hours
  • Review of home study questions of NEC Chapters 3 & 4, in class calculation of Small Commercial Structures.                                                              8 hours
  • Review of home study questions of NEC Chapters 5 & 6, in class calculation of Industrial facilities.                                                                                 8 hours
  • Review of home study questions of NEC Chapters 7 & 8, in class calculations of  multi use structures (residential & commercial).                          8 hours
  • Campus type Calculations with aspects of residential, commercial and industrial facilities. In addition there will be class review time.                 8 hours

Course Objectives:

  • Become able to understand interpretation and intent of code sections as it pertains to electrical installations.
  • To understand the rules, statutes, and the responsibilities of a signing supervisor or electrical inspector.
  • To be able to design and calculate service and panel loads from supporting documentation.
  • Able to calculate transformers sizes to designed loads, transformer impedances and available fault current values.
  • Able to calculate raceway conductor fill, conductor allowable ampacities, and apply necessary environmental derates.
  • Understand and apply in design and installation of electrical grounding and bonding with conductor sizing, connections, and electrical system requirements.
  • Perform calculations for special occupancies such a medical facilities, classified locations, and special equipment requirements.

Course Outcomes: To be able have a better understanding of the Electrical Code requirements, Oregon Rules and Statutes, and Oregon OESC. Be able to communicate this understanding in the form of verbal communications and calculations thereby succeeding in passing the required examination, with a minimum 75%.

Course Prerequisites:

  • 918-030-0020  Application Process

(1) An applicant must apply for a license on a division form or by completing an online application available through the division’s Web site.

(2) In order to be approved the application must include:

(b) Verification of training, work experience or other documentation submitted in the manner established by OAR 918-030-0030.

(3) Nothing in chapter 918, division 030 prevents an applicant for a license from faxing or scanning and e-mailing documents.

(4) An applicant may not sit for an examination or receive a license unless the division approves the application.

(5) An applicant required by statute or appropriate rule to pass a written examination must score at least 75 percent correct.

  • 918-030-0030  Qualifying Criteria

All applicants must submit proof of qualifying criteria as required by the appropriate rules and in the manner established by this rule.

(a) A certificate of completion from a registered apprenticeship program, or a referral letter from either the registered training committee or a board approved training program stating the applicant is qualified to take the examination. The division will accept completion from an apprenticeship program that is not registered only if it meets the Oregon standard for apprenticeship training.

(b) A copy of a valid license from a reciprocal jurisdiction or a letter from the reciprocal jurisdiction stating that the applicant is currently licensed. Only reciprocal jurisdiction licenses obtained through examination meet this requirement; or

(c) Other verification of equivalent training and experience submitted in the manner established in OAR 918-030-0040 and 918-030-0050.

(2) Electrical license applicants who are required to submit proof of related training classes may alternatively submit verification of twice the amount of equivalent work experience required for the license.

(3) Applicants required to take an examination must submit proof of a high school diploma, GED or international equivalent. A college degree will substitute for the requirements of this section.

(4) For purposes of qualifying for a license, the division will consider no more than 2,000 hours of experience per year.

(5) Only lawful work experience is accepted. The appropriate board or division determines whether an applicant’s work experience is lawful. If an applicant disagrees with the determination, the applicant must provide evidence clearly demonstrating that, at the time the disputed work was performed, the work experience was lawful under the laws of the jurisdiction in which work was performed.

  • 918-030-0040   Other Verification

(1) Applicants submitting other verification of equivalent training and experience under OAR 918-030-0030(1)(c), must provide verification from the following persons:

(a) Verification from a current or previous employer actively involved with the (b) If the current or previous employer is no longer in business, is deceased or otherwise cannot be located, verification from the individual that supervised the work; or

(c) Only if both the employer and the supervisor cannot be located, verification from a co-worker that was directly involved in the work performed. Co-worker verification must be accompanied by supporting documentation, such as employment records, showing that the verifier worked with the applicant and has knowledge of the work performed.

(2) The appropriate board may approve alternate verification of training and experience on a case-by-case basis.

  • 918-030-0045  Oregon Reciprocal License Requirements

(1) The purpose of these rules is to assist the citizens of Oregon and reciprocating states with substantially similar electrical and plumbing licensing criteria to obtain a license without examination.

(2) For the purposes of this rule the following definitions apply:

(a) “Reciprocal Applicant” means a person applying for a reciprocal license.

(b) “Reciprocal License” means a license issued by Oregon to a person who qualifies under these rules.

(c) “Reciprocal State” means a state with a reciprocal licensing agreement with Oregon.

(d) “Work Experience” refers to work experience obtained through a registered apprenticeship program. Work experience may also refer to work experience verified in the manner established by OAR 918-030-0040 or 918-030-0050.

(3) To qualify for a license under these rules, a reciprocal applicant must prove that they:

(a) Possess an equivalent or higher license from the reciprocal state that is current and active with no violations or conditions attached within the past three (3) years;

(b) Qualified for the equivalent or higher license from the reciprocal state through required work experience and by passing an examination in the reciprocal state with a score of 75 percent or better;

(c) Have worked a minimum of six (6) months (1,000 hours) under the license in the reciprocal state;

(d) Have not taken and failed the Oregon examination within the past two (2) years for the license type they are applying to reciprocate.

  • 918-030-0050  Verification of Military Training and Experience

(1) Experience and training gained through the military is evaluated on a case-by-case basis. The experience and training must be equivalent to the license criteria established by the appropriate rules.

(2) Military training and experience must be submitted as follows:

(a) Official documentation from supervising officials showing the type and approximate hours of work experience; or

(b) Other reliable documentation verifying training and experience if supervisory officials cannot be located.

  • 918-030-0060  Reapplying After Failed Examination

(1) An applicant who fails an examination may reapply for the license at any time as provided in OAR 918-030-0020. There is no waiting period to reapply after a failed exam.

(2) An applicant who reapplies is not required to re-qualify for examination or provide work history information unless the requirements for the license have changed since the applicant originally applied for the license.

(3) Exam retakes are scheduled no less than 30 days from the date of the failed exam.

  • 918-282-0140  General Supervising Electrician License (5) License and Equivalent Requirements:

(a) The licensing requirements for a general supervising electrician are set out in ORS 479.630.

(b) To comply with the experience requirements, a non-journeyman applicant relying on equivalent experience shall provide proof that applicant had:

(A) Qualifying experience to become a journeyman electrician, that is at least 8,000 hours of work experience with sufficient minimum hours in each area set out in OAR 918-282-0170; and

(B) Additional qualifying experience as a journeyman, that is at least 8,000 hours of work experience that is equivalent to journeyman work.

(c) A licensed journeyman only needs to document 8,000 hours of experience as a journeyman.

  • 918-282-0160  Limited Supervising Electrician License

(2) License and Equivalent Requirements. The four-year experience requirement can be met by four years of experience as a limited journeyman manufacturing plant electrician.

  • 918-281-0020   Electrical Specialty Code Inspector Certification

(2) Qualifications: To qualify for the certification, the individual must have the following training or experience or both:

(a) Four years experience as a licensed general journeyman electrician and a valid Oregon general supervising electrician license;

(b) A four-year Bachelor of Science degree in electrical engineering, plus three years approved experience in design, inspection, or supervision of installations covered by the National Electrical Code or Oregon Electrical Specialty Code; or

(c) Equivalent experience or qualifications approved by the board.

(3) Application for Certification: A person seeking certification under this rule must apply for an Oregon Code Certification as provided in OAR 918-098-1025.

(4) All applicants must pass a board-approved examination with a minimum grade of 75 percent covering:

(a) The Oregon Electrical Specialty Code and electrical provisions of the Oregon Residential Specialty Code; and

(b) Electrical theory, design, installation, and materials.

(5) A person who is certified under this rule must also possess a valid Oregon Inspector Certification issued under OAR 918-098-1025 prior to performing electrical inspections or plan reviews.

(6) Persons qualifying under subsection (2)(b) or (c) of this rule must pass the Oregon general supervising electrician license examination with a minimum grade of 75 percent. An Oregon general supervising electrician license may not be issued to applicants under these subsections.

(7) For purposes of this rule, one year of experience equals 2,000 hours.


The current OESC that adopts the 2011 NEC and other specifically referenced NFPA Standards. All documentation will be paper handouts as educational training and for future reference by the attendee.

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