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Coal Dust convayer #87384 02/25/04 11:23 AM
Joined: Mar 2003
Posts: 849
Y
Yoopersup Offline OP
Member
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
Re: Coal Dust convayer #87385 02/25/04 12:50 PM
Joined: Dec 2003
Posts: 751
E
earlydean Offline
Member
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
Re: Coal Dust convayer #87386 02/25/04 06:34 PM
Joined: Jan 2001
Posts: 1,044
Tom Offline
Member
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.
Re: Coal Dust convayer #87387 02/29/04 03:09 PM
Joined: Dec 2000
Posts: 4,283
electure Offline
Member
Look at 90.2(B)(2) to see where you stand.
Hey Tom, long time no see.


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