How to Properly Label Your Equipment to Meet NFPA 70E
The National Fire Protection Association (NFPA) details how to comply with the Occupational Safety and Health Administration's (OSHA) regulation, 29 CFR 1910.333(a), through the NFPA 70E standard.
According to the NFPA 70E standard, there are six primary responsibilities that facilities must meet. These responsibilities include:
Arc flash labeling is the responsibility of the employer, not the manufacturer or installer of the equipment. Labeling is required for any piece of electrical equipment that may need examination, adjustment, service or maintenance while energized, creating the potential for an arc flash incident to occur.
In order to comply with the label requirement of NFPA 70E, your team should understand what electrical equipment needs to be properly labeled for arc flash.
Here are a few examples of locations an arc flash label should go.
Use our arc flash program checklist tool to quickly identify your needs
Now that you’re familiar with the equipment that needs labeling, here are the elements you will need to include in your arc flash label.
A common guideline is to use the "Danger" header when the voltage is over 600 or when the incident energy is over 40 cal/cm2. If it is less than this threshold, an orange "Warning" header is typically used.
The Institute of Electrical and Electronics Engineers (IEEE) defines this as, “the dimension between the possible arc point and the head and body of the worker positioned in place to perform the assigned task.”
A measurement in calories/cm2 or Joules/cm2 of thermal energy at a working distance from an arc fault.
This is the shortest distance at which a person working at the time of an arc-flash may receive permanent injury (the onset of a second degree burn or worse) if not properly protected by flame-resistant (FR) clothing.
Each hazard risk category requires a different level of protection. Categories range from 1 to 4. Category “0” was removed in the NFPA 70E 2015 Changes.
The voltage of the equipment.
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The NFPA 70E gets updated every three years. See what’s new in 2018.Learn More