Is a Fixture UL-Approved If It Has UL-Approved Parts?
Not getting an entire luminaire tested can create serious liability issues.
If a non-UL-approved lighting is imported from Europe, will simply replacing the electrical parts with UL-approved parts make the entire fixture UL-approved?

Unfortunately, the short answer is no. It seems logical that assembling a fixture from UL-listed parts would give you a UL listing for the fixture. This is a good starting point, but not the entire story. What Underwriters Laboratories will do is put a complete fixture through a series of tests to confirm that it is safe before letting it be put on the market. If the fixture catches fire, it would be deemed as "not UL-listed" and so any resulting damage would be the responsibility of the homeowner; and your insurance company may not cover the damage. Most electricians would be wary installing fixture without a UL label because they would be held liable as well and it could jeopardize their license.

Randall Whitehead, IALD

Randall Whitehead, IALD, is a professional lighting designer and author. His books include "Residential Lighting, A Practical Guide." Whitehead has worked on projects worldwide, appeared on the Discovery Channel, HGTV and CNN, and he is regular guest on Martha Stewart Living Radio. Visit his website for more information on books, upcoming seminars and the latest lighting trends.

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