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CSA Z 462-21 ARC FLASH
https://brainfiller.com/arcflashforum/viewtopic.php?f=9&t=5478		 Page 1 of 1
Author:  Dino [ Tue Jul 13, 2021 11:23 am ]
Post subject:  CSA Z 462-21 ARC FLASH
Does anyone know if the current edition of CSA Z462-21 mentions Arc Flash Boundaries? I've seen the boundary illustration chart by the NFPA, but I'm not certain if an illustration chart exists in the CSA Z462-21 handbook. Are we to follow the NFPA guides in Ontario Canada for the boundaries? I would like to reference an illustration chart in the creation of a safety procedure and wish to reference the correct organization with the appropriate illustration. Any help is appreciated.
Author:  Leonard [ Mon Jul 19, 2021 7:43 am ]
Post subject:  Re: CSA Z 462-21 ARC FLASH
Hello Dino, greetings from Burlington Ontario. Unlike NFPA 70E, we do not have a handbook for CSA Z462. We likely should however. With regards to the arc flash boundary, are you referring to the requirements on a detailed warning label for arc flash and shock? Or Are using the PPE Category Tables? Tables 2, 6A, 6B and 6C? All which reference the arc flash boundary. The parameters are the same as 70E (1.2 cal/cm2. Also please reference Annex C in the 2021 edition and you will see the limits of approach figure, which includes the arc flash boundary.

I hope that this is of some help Dino

Best regards

Len
Author:  Terry Becker [ Sat Jan 18, 2025 7:43 pm ]
Post subject:  Re: CSA Z 462-21 ARC FLASH
Dino if you are interested I have a licensed Electrical Safety Program documentation system and it includes amazing infographics for boundaries and separate two arc-rated arc flash PPE levels, terry.becker@twbesc.ca.
Author:  aving [ Wed May 14, 2025 9:28 am ]
Post subject:  Re: CSA Z 462-21 ARC FLASH - Can we use in the US?
I am the Director of facilities Services at a University in North Carolina :?: . Though I have been working to get studies done across my 200+ buildings we still have a ways to go. Though we train on the use of the tables in NFPA 70E it is clear that unless you know the available fault current and clearing time you cant use the tables. My staff in the field are not going to know those two critical pieces of data. I see that table Z462:24 Table V.1 does provide an alternative method of arc flash PPE selection using information they could gather in the field. Can I use this method of risk assessment in the US. Any help is greatly appreciated.
Author:  Terry Becker [ Wed Nov 04, 2026 7:53 am ]
Post subject:  Re: CSA Z 462-21 ARC FLASH
Aving the employer should complete a facility electrical systems survey to document transformers, kVA and %Z. I do not recommend using Table V.1 as the submitter used a derived method of calculations and the results are extremely conservative and limit the user to a smaller transformer. The arc flash PPE category tables in NFPA 70E 2027 are still the same from the 2004 edition for the listed parameters.

From the transformer survey you have a database for each facility and it includes direction to the employees that the table can be used.
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