Labeling Electrical Hazards
As highlighted in #18 above new equipment labeling requirements were added to the 2012 edition of NFPA 70E (130.5(C)). This will require employers to field mark electrical equipment as part of their Arc Flash Analysis. Examples of equipment that would require field marking would be switchboards, panelboards, industrial control panels, meter socket enclosures, and motor control centers. The label must contain the following information:
- At least one of the following:
a. Available incident energy and the corresponding distance or;
b. Minimum arc rating of clothing or;
c. Required level of PPE or;
d. Highest Hazard/Risk Category (HRC) for the equipment
- Nominal system voltage
- Arc Flash Boundary
The method of calculation and data to support the information for the label field marking must be documented. NFPA is allowing an exemption for all labels applied prior to September 30, 2011 will be acceptable.
Example of current label:
Next: FAQsReturn to Top