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            1. NEMA
            2. Standards
            3. Technical Services
            4. Conformity Assessment
            5. Useful Links: Product Testing & Certification

            Useful Links: Product Testing & Certification

            This list represents a sampling of electrical product testing and certification laboratories and is neither an endorsement nor a list of recommended service providers. The user should research the companies to find a laboratory or product certifier best suited for his or her needs. For more information about conformity assessment, visit the NEMA ABCs of Conformity Assessment page.

            The list is broken down into three categories as follows:

            1. National Certification Bodies (NCBs) recognized under the IECEE CB scheme
            2. Accepted Certification Bodies (ACBs) recognized under the IECEx Scheme
            3. Nationally Recognized Testing Laboratories (NRTLs) recognized by OSHA.

            In some cases, a laboratory may be recognized by more than one of the three schemes under their individual rules of operation.

            The user is encouraged to visit the websites of the individual schemes for specific contact information as well as detailed listing of the capabilities for which the laboratories are recognized.

            In addition to these product certifiers, there are many other testing laboratories in the United States, some of which conduct testing of electrical products but which may not operate a certification program involving an issuance of a certification mark. The National Institute of Standards and Technology (NIST) publishes a Special Publication SP 903 with information on over one hundred testing laboratories, some of which test electrical products and components. There are indexes, which can be used to locate those that engage in the testing of electrical products.

            In addition, the American Society for Testing and Materials (ASTM) publishes LAB01, Directory of Testing Laboratories. The 2001 Edition contains over 1000 testing laboratories, some of which test electrical products and components.

            IECEE CB Scheme

            The IECEE CB Scheme is a worldwide program in which product certifiers are recognized for their ability to test and certify electrical products in various product categories related to the electroindustry. In the U.S. there are currently six recognized National Certification Bodies (NCBs) as follows:

            Curtis-Straus, LLC
            One Distribution Center Circle Ste #1
            Littleton, MA 01460
            Contact
            Intertek
            3933 US Rte 11
            Cortland, NY 13045-9717

            Contact
            MET Labs, Inc.
            914 W. Patapsco Avenue
            Baltimore, MD 21230-3432
            Contact
            TUV Rheinland North America
            12 Commerce Road
            Newton, CT 06470
            Contact
            UL LLC
            333 Pfingsten Road
            Northbrook, IL 60062-2095
            Contact
             

            IECEx Scheme

            The IECEx Scheme is a worldwide program in which product certifiers are recognized for their ability to test and certify electrical products and enclosures used in hazardous locations where the presence of gas or dust can result in an explosive condition in the presence of electrical discharges that are not contained. At the present time, there are three Accepted Certification Bodies (ExCBs) recognized as follows:

             

            UL LLC
            333 Pfingsten Road
            Northbrook IL 60062-2096

            Contact

            Intertek

            545 E Algonquin Rd Ste H
            Arlington Heights, IL 60005

            Contact

            FM Approvals

            1151 Boston-Providence Turnpike
            P.O. Box 9102
            Norwood, MA 02062

            Contact

             

             

            OSHA NRTL Program

            The U.S. Department of Labor's Occupational Safety and Health Administration (OSHA) operates a program to qualify Nationally Recognized Testing Laboratories (NRTLs) for their ability to certify products for safe use in the workplace. At the present time there are seventeen NRTLs, see Current List of NRTLs.

             

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