Safety Labels
Arc Flash Labels
Arc Flash Labels & Signs Arc Flash Safety
Arc Flash labels are not required by code. The NFPA 70E code applies to arc flash. Neither this code, nor OSHA requires that arc flash labels be used. HOWEVER, properly labeling arc flash hazard areas is an important component of safety AND should you have an arc flash incident you can expect that a lack of labeling will weigh against you in the following investigation.
What information should be on an arc flash label? NFPA 70-NEC Section 110.16 requires that the label state that an arc flash hazard exists. HOWEVER, it is suggested that the label include information describing the specific hazards. Each arc flash hazard is unique. For example, the following information is commonly found on arc flash labels:
Flash Protection Boundary
This is the closest anyone can approach the equipment that has the potential for an arc flash, without the use of PPE (Personal Protective Equipment).
Limited Shock Approach Boundary
This boundary may only be crossed by a "qualified" person who has been trained in the hazards of the particular component or equipment being services. An "unqualified" person may enter this boundary if accompanied by a qualified person.
Restricted Shock Approach Boundary
Only a qualified person using adequate shock prevention equipment and techniques may cross this boundary.
PPE Required
This part of the label identifies the Personal Protective Equipment (PPE) that must be used. This includes shoes, gloves, flame resistant clothing, safety glasses, etc.
Arc Flash Label Colors and Design
As you can see from the arc flash labels shown here, a variety of styles are used. There are no standards for how an arc flash label is designed. In general, if it is a WARNING label the color orange should be used. If it is a DANGER label, the color red should be used.
The top example shows an arc flash die cut label with a preprinted header and lines dividing the label into four areas. In this case the top white area is used for header information; the left box is used for arc flash information; the right box is used to shock hazard information; and the area at the bottom is used to which the label applies.
The middle example is made from our two-color continuous vinyl. In this case the label comes with an orange stripe at the top of the vinyl where a header can be printed. The white area in the middle of the label is used for whatever information the owners of the equipment determine should be on the label.
The lower label is an example of an arc flash label made using continuous vinyl. As long as it warns that an arc flash hazard exists (NFPA 70-NEC Section 110.16) it can include any other information.
