NFPA 70E

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rstalvey

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Valdosta, GA
Unless specifically required per specs, is NFPA 70E "automatically" part of NFPA 70?

We have a project where the engineer is insisting that we provide equipment labeling per NFPA 70E, but nowhere in the specs can we find anything tying NFPA 70E to labeling. We are, however, required to comply with NFPA 70 for labeling requirements.
 

mayanees

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Westminster, MD
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Electrical Engineer and Master Electrician
NEC label requirements

NEC label requirements

NEC 110.16 (NFPA 70) calls for Arc-Flash Hazard Warning labels. Informational Note No. 1 lists NFPA 70E as a resource for that task.
You could use your own standard for labeling, alternative to 70E, but if your method were to be scrutinized by OSHA, 70E would be the comparison document, so it makes sense to use 70E.
 
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don_resqcapt19

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Illinois
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retired electrician
Unless specifically required per specs, is NFPA 70E "automatically" part of NFPA 70?

We have a project where the engineer is insisting that we provide equipment labeling per NFPA 70E, but nowhere in the specs can we find anything tying NFPA 70E to labeling. We are, however, required to comply with NFPA 70 for labeling requirements.
If the specs call for labeling per 70E then you have to do it as part of your contract work. If the specs do not call for it, those lables are beyond what is required by the NEC, and beyond what is required by your contract.

If the engineer wants the lables, he should be doing the calculations and telling you the information that is required for the label. Incident energy, hazard class, arc flash boundry and things like that.
 

mayanees

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Westminster, MD
Occupation
Electrical Engineer and Master Electrician
110.16, 110.21(B)

110.16, 110.21(B)

My interpretation is that 110.16 (Electrical equipment...in other than dwelling units.... shall be field of factory marked. .. shall meet 110.21(B))
110.21(B) defines the requirements for Field-Applied Hazard Markings.
The Handbook shows a picture of a generic "arc-flash warning sign" that looks like the typical arc-flash labels, with the orange stripe on top, and refers the reader to 70E. It even shows the Brady number on the label. Obviously that's not as good as the actual incident energy levels that come from an arc-flash analysis, but that would meet NEC requirements.
So I think an electrical inspector should expect to see labels on non-dwelling installations.
Is that the case for you guys who are inspectors? How much arc-flash labeling do you see, and on what kind of installations?
 

don_resqcapt19

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Illinois
Occupation
retired electrician
My interpretation is that 110.16 (Electrical equipment...in other than dwelling units.... shall be field of factory marked. .. shall meet 110.21(B))
110.21(B) defines the requirements for Field-Applied Hazard Markings.
The Handbook shows a picture of a generic "arc-flash warning sign" that looks like the typical arc-flash labels, with the orange stripe on top, and refers the reader to 70E. It even shows the Brady number on the label. Obviously that's not as good as the actual incident energy levels that come from an arc-flash analysis, but that would meet NEC requirements.
So I think an electrical inspector should expect to see labels on non-dwelling installations.
Is that the case for you guys who are inspectors? How much arc-flash labeling do you see, and on what kind of installations?
Yes, those lables are required by the NEC, but they don't have the information that is required for a label that complies with 70E.
 

zog

Senior Member
Location
Charlotte, NC
Unless specifically required per specs, is NFPA 70E "automatically" part of NFPA 70?

We have a project where the engineer is insisting that we provide equipment labeling per NFPA 70E, but nowhere in the specs can we find anything tying NFPA 70E to labeling. We are, however, required to comply with NFPA 70 for labeling requirements.

Just ti clarify here, are you providing equipment to a facility and they want labels on them or are you doing something else? Understanding the scope of the project would be helpful here.
 
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