NEC Class 1 Div 2

Hello,
I work in designing small industrial control panels. Nothing overly fancy, a PLC with various motors and sensors.
However, last week, my company took a job, were the equipment is going into a Class 1 Div. 2 area. I read the NFPA 70, and it gives some definitions. I need specifics. What kind of components to use, wiring practices, ect. ????
I have never done this before, and, my Electrical Supplier is not very helpful. If someone can point me to a publication, or online guide, I would be most grateful.
Also, Is there a place to call, regarding the NFPA 70, when I am indoubt of my interpretation?
thanx
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If you are having trouble, I suggest you contact a local Engineering Consultancy specialising in Hazardous Areas. You could probably ask the engineering manager at an Oil Company depot nearby to find out who they use.
If you were using IEC I could help you more.. Good luck.
Cameron:-)
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