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You can never be too careful when it comes to fire safety. Protecting your workers in the field starts with understanding the differences between flame resistant (FR) and arc flash, or arc rated (AR), safety workwear, and clothing. These terms were often used interchangeably when describing personal protective equipment (PPE), but in 2012, the NFPA 70E created clear distinctions between the two. Flame resistant clothing doesn’t offer the same level of protection as arc rated equipmen …