Class I, Div II wiring

[augie47]

Art 500 is by no means my strong-point, so I ask an elementry question.
I have an istallation which has been in question for some time. An engineer has finally concluded that the area (enclosed section of the building) is Classified as Class I, Division II.
There is some wiring installed in that area that is other than that specified in 501.10(B) {as an example EMT to a motor operated louver}.
With a Class I Div II area is there any situation where wiring methods (excluding nonincendive) other than those in 501.10 can be accceptable based on such things a ventilation, etc. ?

 

[rbalex]

Ventilation should have been part of the original evaluation. Since classifying a location is for the purpose of selecting equipment and wiring methods, (See 500.1), once the location is properly classified as Division 2, Section 501.10(B) takes over with no exceptions.

 

[augie47]

thanks......