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 Post subject: Table 130.7(C)(15)(A)(b)
PostPosted: Tue Dec 05, 2017 12:32 pm 
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The phrase "Panelboards or other equipment" is used in the referenced table but I could not find a definition on what "other equipment" entails. Does it mean junction boxes, VFDs, remote mounted starters, remote mounted breaker in a single box, etc?

Anyone have any insight on what "other equipment" is meant to describe or encompass?

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 Post subject: Re: Table 130.7(C)(15)(A)(b)
PostPosted: Wed Dec 06, 2017 7:41 pm 
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Hard to say. The original test used effectively used two configurations, vertical open air and vertical cubic box, with a 5 sided box, and three box sizes. I don't recall what the three box sizes are or how they line up to the "equipment table" but suffice to say what you are referring to is definitely a very shallow box.


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 Post subject: Re: Table 130.7(C)(15)(A)(b)
PostPosted: Thu Dec 07, 2017 7:48 am 
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Good question!

I have taken "other equipment" in the NFPA 70E table to be a "catch all" but that can certainly be open to interpretation.

The box sizes referenced in IEEE 1584 are:

1143 mm × 762 × 762 mm = 45" × 30" × 30"
508 mm × 508 mm × 508 mm = 20" × 20" × 20"
305 mm × 368 mm × 191 mm = 12" × 14" × 7.5"

* 100 mm × 100 mm × 50 mm = 4" × 4" × 2"
The last one was used for sustaining a 215 V. arc - it took a small box to sustain.

The draft of the next edition of IEEE 1584 has quite a bit more regarding bus orientation, variables etc. Stay tuned!


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 Post subject: Re: Table 130.7(C)(15)(A)(b)
PostPosted: Mon Dec 11, 2017 11:24 am 
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I take that statement to be an umbrella term that encompasses all equipment that has mechanics, parts, or connection which would need to be serviced, maintained, or tested. Some other blogs have argued that it is only for those locations that need to have work performed while in an energized state. Who and how would the need for future service, or testing while energized be determined.

My stance is anything that has field servicable parts and pieces enclosed within should have a label warning of the potential risks.


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 Post subject: Re: Table 130.7(C)(15)(A)(b)
PostPosted: Tue Dec 12, 2017 1:52 pm 
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Hi Jim,

I agree sort of an umbrella statement. And a very good questions being asked here! Up here in the great North I have always looked at it as equipment with field serviceable parts and has the basic warning label for arc flash and shock. This could negate junction boxes, pull boxes etc


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