Stark Safty Consultants

Step 3: Labeling



Arc flash labels identify potential arc flash hazards. These labels are used to warn qualified individuals of the type of hazard, correct Flash Protection Boundary distance and the required Personal Protective Equipment. Labels must be located so that they are clearly visible before examination, adjustment, service or maintenance of the equipment.

The best resource for how a label should look is ANSI Z535.4

NFPA 70E (2015)

130.5(D): Equipment Labeling. Electrical equipment such as
switchboards, panelboards, industrial control panels, meter socket enclosures, and motor control centers that are in other than dwelling units and that are likely to require examination,adjustment, servicing, or maintenance while energized
shall be field-marked with a label containing all the following information:
(1) Nominal system voltage
(2) Arc flash boundary
(3) At least one of the following:

Available incident energy and the corresponding
working distance, or the arc flash PPE category in
Table 130.7(C)(15)(A) or Table 130.7(C)(15)(B)
for the equipment, but not both


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