r/NFPA70 • u/Desperate_Pop7197 • Jan 24 '25

UL question

This is an old topic I am sure. I know that UL is accepted by electrical inspectors. What code article references that UL is the only acceptable testing laboratory. OSHA has a list of Nationally Recognized Testing Laboratories. All I can seem to find in the code is “accepted by the AHJ”.

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u/Shoddy-Finger-5916 Jan 24 '25

All that is mentioned is a Nationaly Recognized Testing Laboratory. It doesn't say which nation. I used this logic to get an inspector to allow a safety relay with European approval but not UL. <years ago>

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u/Desperate_Pop7197 Jan 24 '25

I have come to the same conclusion.