Reference Source

UL 674

For UL 674, standard title is Electric Motors and Generators for Use in Hazardous (Classified) Locations; nrtl is NNA; laboratory is Nemko North America, Inc; status is currently recognized, recorded from its source on 2026-08-10.

Test standard
UL 674 verified
Standard title
Electric Motors and Generators for Use in Hazardous (Classified) Locations verified
NRTL
NNA
Laboratory
Nemko North America, Inc. verified
Status
currently recognized our reading
Sourceosha.gov
Verified
Review by
DatasetWhich OSHA-recognized labs (NRTLs) can certify to a given test standard

Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.

What the source says

UL 674 | Electric Motors and Generators for Use in Hazardous (Classified) Locations |

osha.gov, retrieved 2026-08-10

Source

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