[RE-wrenches] Arc Flash Hazards

[jay peltz]

HI Matt,

I was just at a conference discussing this exact topic.

As usual Solar, at least smaller systems in reality can't get to a arc flash explosion potential, there just isn't enough watts there.
Now if you are talking about a megawatt system, thats a different story.


And yes that doesn't hold up if an inspector wants to go to the full NEC/NFPA code.

So we need to try and get the code updated to our industry, but in the mean time, as usual depends on the AHJ.

jay

peltz power 
On Mar 23, 2010, at 4:36 PM, Matt Lafferty wrote:

> Wrenches,
>  
> You know solar is prime-time when it hits the mainstream "What's wrong with this picture" quiz! http://ecmweb.com/nec/whats_wrong_here/whats_wrong_020410/
>  
> How are you dealing with NEC 110.16?
>  
> 2008 NEC 110.16 Flash Protection.
> Electrical equipment, such as switchboards, panelboards, industrial control panels, meter socket enclosures, and motor control centers, that are in other than dwelling occupancies, and are likely to require examination, adjustment, servicing, or maintenance while energized shall be field marked to warn qualified persons of potential electric arc flash hazards. The marking shall be located so as to be clearly visible to qualified persons before examination, adjustment, servicing, or maintenance of the equipment.
>  
> I'm seeing all flavors out there. Including the most common, pretending it doesn't exist. Back in the day, relying on Qualified Persons Only and Danger! High Voltage! You Can Die If You Touch It (or similar) was enough. Are you finding building inspectors that are requiring the specific Arc Flash Hazard signage? In addition to, or in lieu of, other signage?
>  
> Separate, but related issue: Now that OSHA and NFPA 70e are dancing to the same song, has this affected your operations? If so, in what way?
>  
> Keep it Safe and Sunny!
>  
> -Matt Lafferty
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