With the 2022 update of UL 508A, the standard is now 100% aligned with NFPA 79 (and with IEC 60204-1) regarding the prescription for a Class A GFCI on all receptacle for general use. You find the new language in section 66.4.4.
Ul 508a Standard Pdf 79
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1.5 An evaluation of the adequacy of the controls and protective devices contained in an industrial control panel for supervision and proper functioning of the controlled loads or equipment is not covered by the requirements in this standard. Such evaluations are covered by the standards applicable to the complete piece of utilization equipment.
NFPA stands for National Fire Protection Association, a nonprofit organization that provides nationally and internationally recognized safeguards, codes, and standards for industrial machinery to reduce the risk of fire and other hazards, for the protection of the operators, equipment, facilities and work-in-progress.
{ "@context": " ", "@type": "FAQPage", "mainEntity": [ "@type": "Question", "name": "Is NFPA 70 the same as NEC?", "acceptedAnswer": "@type": "Answer", "text": "Yes. The NEC (National Electrical Code) is a widely used code developed by the NFPA, also known as NFPA 70 (its official title). It governs the safe installation of electrical wiring and equipment across all industrial applications in the United States. A new version of the NEC is published by the NFPA as NFPA 70 every three years." ,{ "@type": "Question", "name": "Does NEC apply to control panels?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. Article 409 of the NEC outlines the standards and requirements for industrial control panels, including Short Circuit Ratings and Markings, and Wiring Space and Wire Bending Space.
Much has changed since then. Nameplates are now a requirement for all consumer, industrial, medical, and high tech machinery worldwide. In the United States, the NFPA has issued formal nameplate content standards and new updates to nameplate requirements throughout the years. 2ff7e9595c
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