Neither is gear from the EU. UL is strictly voluntary is not a regulatory body.
That aside I agree on the questionable code and safety standards.
The National Electrical Code (NEC) does not specifically require products to be
UL listed, but it does require electrical equipment to be listed and labeled by a qualified
Nationally Recognized Testing Laboratory (NRTL). [
1]
Key Facts About NEC and Testing Requirements
- NRTL Approval: The NEC (such as in sections like Article 110.3) mandates that equipment be evaluated and certified by an OSHA-approved testing lab, of which Underwriters Laboratories (UL) is only one option. Other accepted labs include CSA, Intertek (ETL), and Eurofins. [1, 2, 3, 4, 5]
- The Role of UL: While not explicitly named as the sole provider, UL is the most common NRTL, and its safety standards are widely used as the benchmark for compliance. [1, 2]
- Authority Having Jurisdiction (AHJ): Local electrical inspectors make the final call on whether a specific certification mark is acceptable for a given installation. [1, 2]
- Following Instructions: NEC Article 110.3(B) states that any listed or labeled equipment must be installed and used strictly according to the instructions included with that listing. [1, 2]