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Avoid Confusion about NFPA-79

Confusion abounds about the “new” National Fire Protection Association (NFPA) regulations pertaining to UL-recognized (AWM style) cable. Long after the practice became widespread, inspectors became aware of the ubiquitous use of AWM (Appliance Wiring Material) style cables in machine interconnecting sensors, actuators, switches and other components – often as part of premolded connector assemblies. The 2007 change to the NFPA-79 electrical code states that AWM-style single-conductor wire or multi-conductor cable is not permitted on machinery unless it is part of a UL-listed assembly. In other words, machine wiring requires UL-listed cable. Clearly, UL-listed cable has been available for many years. So the real question is which UL listing is appropriate for particular applications? Herein lies the confusion – speculating about the intent of the code change. Contact Northwire for information and samples.

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Are you interested in publishing your new products, an entry in the Company directory list, a video or a webinar?

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Digital tools or software can ease your life as a photonics professional by either helping you with your system design or during the manufacturing process or when purchasing components. Check out our compilation:

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