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| Which equipment needs labels per NFPA 70E 2012? https://brainfiller.com/arcflashforum/viewtopic.php?f=2&t=1968 |
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| Author: | RECS [ Mon Jan 09, 2012 7:20 pm ] |
| Post subject: | Which equipment needs labels per NFPA 70E 2012? |
The new NFPA 70E-2012 describes very clearly the type of equipment that needs arc-flash labels. I have three questions: 1. Industrial Control Panels. I have seen a good number of comments and presentations from label manufactures and other that non-fused disconnect switches and fusible disconnect switches qualify as Industrial Control Panels, and therefore, we must calculate the incident energy and place labels on them. I have read the NEC 70-2011 definition of Industrial Control Panel and is still not clear for me if the fused or un-fused disconnect switches belong to this classification of equipment. 2. Busways. This very popular distribution type equipment does not appear on the list. Do we need to place arc-flash labels on busways? 3. Switchgear (different to switchboard) are not mentioned. Is it your understanding that, according to the strict wording of NFPA 70E 2012, switch-gears are not required to have a label? Do not misunderstand my question. I do place labels on fusible disconnect switches, busways, and switchgear equipment because of safety. But I am looking to increase my understanding of the strict interpretation of the words of the NFPA 70E 2012. |
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| Author: | Zog [ Tue Jan 10, 2012 7:04 am ] |
| Post subject: | |
Anything that requires adjustment, maintenance, or servicing while energized. |
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| Author: | jghrist [ Tue Jan 10, 2012 9:43 am ] |
| Post subject: | |
RECS wrote: The new NFPA 70E-2012 describes very clearly the type of equipment that needs arc-flash labels.
NFPA 70E requires labeling for electrical equipment "such as switchboards, panelboards..." When the term "such as" is used, it is not exclusive. You can't surmise that if a piece of equipment is not listed that it does not require a label. |
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| Author: | Kay J. Sharp [ Mon Sep 17, 2012 1:06 am ] |
| Post subject: | |
The NFPA 70E listings have always emphasized on strict labelling of electrical equipment. This is an essential safety standard and must not be overlooked at all. Switchboards and panel-boards were stated as examples because these are mostly left without labels. |
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