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#87384 - 02/25/04 11:23 AM Coal Dust convayer  
Yoopersup  Offline
Member
Joined: Mar 2003
Posts: 826
Michigan
QUESTION
A coal Conveyor is a Class 2 division 1 area. How far away from the conveyor does the area a class 2 division 1 extend ???


2017 / 2014 NEC & Related Books and Study Guides

#87385 - 02/25/04 12:50 PM Re: Coal Dust convayer  
earlydean  Offline
Member
Joined: Dec 2003
Posts: 751
Griswold, CT, USA
This is a question only the engineer that designer the project can answer. Many times it extends for 20 or 30 feet, other times only 18 inches. What is your level of comfort? Maybe there is some standard out there that the engineers will consult?


Earl

#87386 - 02/25/04 06:34 PM Re: Coal Dust convayer  
Tom  Offline
Member
Joined: Jan 2001
Posts: 1,044
Shinnston, WV USA
You could also try contacting MSHA (http://www.MSHA.gov/) or one of their inspectors for guidance.

If the conveyor is underground in a mine, NEC does not apply.


Tom


Few things are harder to put up with than the annoyance of a good example.

#87387 - 02/29/04 03:09 PM Re: Coal Dust convayer  
electure  Offline


Member
Joined: Dec 2000
Posts: 4,261
Fullerton, CA USA
Look at 90.2(B)(2) to see where you stand.
Hey Tom, long time no see.



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