Standards as High as Your Own
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Hello C. Michaels, thank you for participating in the CQD. The NEC® does not limit the use of electrical equipment to specific manufacturers or certain Countries of origin. Electrical equipment, regardless of who, or where it is made, must be approved in accordance with Section 110.2, and listing has a large role in that approval process at times. Additonally, certain equipment must be listed when required by a specific Code Section. The 3rd party performing the certification and listing of electrical equipment/components are Nationally Recognized Testing Labs or NRTLs. OSHA has an NRTL program, recognizing qualified electrical testing labs performing product certification. A current list of NRTLs in OSHA’s program can be found here.
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