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Trending Now

Infrastructure in Motion

April 19, 2026

Electric Vehicle Charging Infrastructure: Stations, Equipment, and Planning

April 19, 2026

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Len Frier

Len Frier

Len Frier is a registered professional electrical engineer in the state of Maryland. He founded MET Laboratories in 1959. He initiated the Nationally Recognized Testing Laboratory Program at OSHA in 1988, and is charter member of the National Electrical Testing Association (NETA). He is former chairman of the ANSI Z34 committee on "Third Party Certification," chairman of the American Council on Electrical Safety (ACES), member of the ANSI Accreditation Committee, and the American Council of Independent Laboratories (ACIL). Presently, he is director at MET Laboratories, Inc. and is active in government affairs relating to US Certifications of electrical products.

Guidelines to Evaluating Unlisted Products

Posted by by Len Frier
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What Electrical Inspectors Don’t See

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