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#87384 - 02/25/04 07:23 AM Coal Dust convayer
Yoopersup Offline

Registered: 03/04/03
Posts: 826
Loc: Michigan
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 ???

2014 / 2011 NEC & Related Books and Study Guides
#87385 - 02/25/04 08:50 AM Re: Coal Dust convayer
earlydean Offline

Registered: 12/22/03
Posts: 749
Loc: 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?

#87386 - 02/25/04 02:34 PM Re: Coal Dust convayer
Tom Offline

Registered: 01/01/01
Posts: 1069
Loc: Shinnston, WV USA
You could also try contacting MSHA ( or one of their inspectors for guidance.

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

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

#87387 - 02/29/04 11:09 AM Re: Coal Dust convayer
electure Offline


Registered: 12/24/00
Posts: 4226
Loc: Fullerton, CA USA
Look at 90.2(B)(2) to see where you stand.
Hey Tom, long time no see.


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