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| Which edition of IEEE 1584 should be used? https://brainfiller.com/arcflashforum/viewtopic.php?f=4&t=5326 |
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| Author: | jchristopherslice [ Wed Jun 24, 2020 2:51 pm ] |
| Post subject: | Which edition of IEEE 1584 should be used? |
If I've understood correctly, the need or requirement to protect against, label for and perform arc flash studies is ultimately driven by states' adoption of the National Electric Code (NFPA 70). My state (and several others) have only recently adopted 2017 and will not adopt 2020 probably until 2023. NFPA 70-2017 refers to NFPA 70E-2015 and IEEE 1584-2002 regarding matters surrounding Arc Flash. Since IEEE 1584-2018 isn't referenced in these editions, should the earlier 2002 edition still be used in such states? |
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| Author: | mpparent [ Thu Jun 25, 2020 6:22 am ] |
| Post subject: | Re: Which edition of IEEE 1584 should be used? |
It wouldn't hurt to use the updated standard, just be aware that there are some significant changes that result in added data collection. Mike |
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| Author: | JBD [ Thu Jun 25, 2020 8:43 am ] |
| Post subject: | Re: Which edition of IEEE 1584 should be used? |
The NEC references to the older NPFA and IEEE standards are in non-enforceable Informational Notes. They are simply places to look for additional information as a means for compliance not as a requirement. Without additional guidance, good engineering practice would be to follow the current industry standards. |
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| Author: | Electricidad [ Mon Jun 29, 2020 8:57 am ] |
| Post subject: | Re: Which edition of IEEE 1584 should be used? |
You should use the latest (2018 version). The IEEE 5184 is a "guide" not a standard, per IEEE definitions. It is a guide to the science of arc flash incident energy prediction. After it was realized/understood the world was round it would have been silly to continue acting as if it was flat! Same concept applies here. Furthermore, concepts of risk analysis which should be followed when assessing risk for a particular task indicate that the best available information should be used. The new guide is that best available information. As other comments have mentioned, the calculations are very different and the required inputs are very different as well. |
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| Author: | Jim Phillips (brainfiller) [ Mon Jun 29, 2020 3:58 pm ] |
| Post subject: | Re: Which edition of IEEE 1584 should be used? |
FYI, Annex D of the 2021 Edition of NFPA 70E will reference the 2018 Edition of IEEE 1584. |
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| Author: | Electricidad [ Mon Jul 13, 2020 8:10 am ] |
| Post subject: | Re: Which edition of IEEE 1584 should be used? |
I would suggest you should use the latest version of the IEEE 1584 guide. A couple of points: ----1---- IEEE 1584 is the "science" of arc flash... regardless what other text reference or do not reference the science has changed... once it was realized the world was round there was little point in making your sailing plans based on the presumption the world was flat just because the map you acquired last year said so! ----2---- The IEEE 15484 calculations exist to provide data used in Risk Analysis for the planning of a task. The elements of good risk analysis as defined in all relevant text sand standards state that one should use the best available information and the most timely available information... I.e. if there are two guides and one is out of date and replaced by a newer one, the case could probably be made that the newer one must be used. It seems to me, and I am neither a lawyer, nor an expert in standards application, if one uses the older guide for risk analysis and then there is an incident, having ignored the newer guide, now available for almost two years, may be a somewhat difficult decision to defend. |
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