It is NOT an electricians duty to determine hazardous location classifications . check the "E" drawing specs from the buildings prints.Ask the business owner for them. The engineer will have already classified the area(s).
presence of combustible vapors present during normal operation , I think ClassI Div.I. I havent done much hazardous location work (except new construction at hospitals, etc where classification was done already) But I had to study it for my license.
I will follow this post , A friend has asked me to wire a backyard paint booth/shop for him.I was a little weary of taking it on for AHJ purposes and the cost of rigid/chico/seal-offs etc etc
[This message has been edited by Sean WB (edited 10-22-2002).]
I did not get as think so badly as you shocked I did.