OESC 90.4 Enforcement.
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When the NEC® requires a product to be “listed” such as for luminaires in NEC® Section 410.6 or automatic transfer switches for emergency use such as in NEC® 700.5(C), this means that the product must be approved by one of the several OSHA approved Nationally Recognized Testing Laboratories (NRTL’s).

The NRTL’s commonly use the term “certified” to describe a product that has been listed.

The Oregon OESC states the following in section 90.4: “Where the NEC® requires electrical products to be “listed” or “labeled”, the words “listed” or “labeled” shall have the same meaning as “certified electrical product” under ORS 479.530”.

Oregon amendments to the 2020 NEC® are located in “Table 1-E” of the Oregon Electrical Specialty Code (OESC) which can be seen using the following link or the OESC PDF file located near the bottom of the screen: https://www.oregon.gov/bcd/codes-stand/Documents/21oesc-table1-e-2021April.pdf

  Click here to review the OESC  

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OESC 90.4 Enforcement.

Below is a Real Question from our Electrical Continuing Education Courses for Electrical License Renewal:

Which of the following is true for listed electrical products used in Oregon?

A: UL is not an approved nationally recognized testing laboratory in Oregon.
B: All listed electrical products used in the state of Oregon must be listed through UL.
C: The words “listed” or “labeled” have the same meaning as “certified electrical product” in the state of Oregon.
D: The words “listed” or “labeled” are NOT the same as “certified electrical product” in the state of Oregon.
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