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 Post subject: Which edition of IEEE 1584 should be used?
PostPosted: Wed Jun 24, 2020 2:51 pm 

Joined: Thu Jun 11, 2020 11:12 am
Posts: 1
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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 Post subject: Re: Which edition of IEEE 1584 should be used?
PostPosted: Thu Jun 25, 2020 6:22 am 

Joined: Thu Apr 18, 2019 11:42 am
Posts: 16
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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 Post subject: Re: Which edition of IEEE 1584 should be used?
PostPosted: Thu Jun 25, 2020 8:43 am 
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Joined: Mon Jan 18, 2010 11:35 am
Posts: 521
Location: Wisconsin
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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 Post subject: Re: Which edition of IEEE 1584 should be used?
PostPosted: Mon Jun 29, 2020 8:57 am 

Joined: Mon Aug 20, 2018 6:03 am
Posts: 4
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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 Post subject: Re: Which edition of IEEE 1584 should be used?
PostPosted: Mon Jun 29, 2020 3:58 pm 
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Location: Scottsdale, Arizona
FYI, Annex D of the 2021 Edition of NFPA 70E will reference the 2018 Edition of IEEE 1584.


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