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| Arc Flash Label Data - Revisted https://brainfiller.com/arcflashforum/viewtopic.php?f=33&t=5522 |
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| Author: | Jim Phillips (brainfiller) [ Sun Oct 24, 2021 12:57 pm ] |
| Post subject: | Arc Flash Label Data - Revisted |
Arc flash (equipment) labels and data have been discussed in the past but practices evolve over time. The 2021 Edition of NFPA 70E has minimum requirements for labels which includes: (1) Nominal System Voltage 130.1(H)(1) (2) Arc Flash Boundary 130.1(H)(2) (3) At least one of the following: a. Available incident energy and the corresponding working distance OR the arc flash PPE category b. Minimum arc rating of clothing c. Site-specific level of PPE Here are a couple of references regarding labeling: Article: Arc Flash Labels Simplified Arc Flash Labeling Requirements and Strategies Free On Demand Video Class To gauge the evolution of labeling, this week’s question is a follow up to a similar question asked quite some time ago. What are your/company preferences for arc flash labels? • Nominal Voltage • Arc Flash Boundary • Incident Energy and Working distance • Arc Flash PPE Category • Minimum arc rating of clothing • Site specific PPE level • Limited and Restricted approach boundary • Date • List of PPE requirements • Something else - please tell us! |
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| Author: | Robertefuhr [ Mon Oct 25, 2021 10:33 am ] | ||
| Post subject: | Re: Arc Flash Label Data - Revisted | ||
We also include the following items: 1. Our company name. 2. Our company phone number. 3. Our Job #. (this is helpful for when we do a AF refresh study after 5 years.) 4. Maximum available fault current. 5. Standard Version used to calculate the AF energy and boundaries.
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| Author: | stevenal [ Mon Oct 25, 2021 1:04 pm ] |
| Post subject: | Re: Arc Flash Label Data - Revisted |
I would add that Robert's example above also contains an ANSI signal word and symbol. |
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| Author: | phil.haataja [ Tue Oct 26, 2021 7:54 am ] |
| Post subject: | Re: Arc Flash Label Data - Revisted |
Having the maximum available fault current is a huge plus. I think by adding that number people will gain a much better appreciation of what arc flash energy is all about. Strangely, too many people order gear without even knowing what the available fault current even is. |
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