A product with these identifying marks, mean that it has passed Underwriter Laboratories’ safety requirements for use by consumers and in places of business. A UL or ETL listing is common is any electrically operated, gas-fired or oil-fired product. A lighting fixture, for example, would be tested to make sure it does not end up malfunctioning, causing a fire, or some other safety hazard.
Other Products that are also UL listed
A UL or ETL listing is required by most commercial building codes. However, manufacturers are not required to have their products tested by either UL or ETL. The true legal requirement is that the third-party laboratory which performs the testing be Nationally Recognized Testing Laboratories (NRTL) by the U.S Occupational Safety and Health Administration (OSHA).
Consumers should note, however, that purchasing an unlisted product can be dangerous and can cause serious injury or death. It is recommended that when purchasing electrical products, that you ensure that they are listed. This means that they have been tested by a NRTL and meet the quality and safety standards set by OSHA.
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