Best practices-re NFPA 496

[cryomark]

Above article states minimum gage pressure for purged and pressurized enclosures is 25Pa. I have been looking for references and documentation for a convention or common practice of actual operating pressures in typical Class 1, Div 2 applications.
Any links or even anecdotal experience will be welcome.

 

[TOE1]

you can check Bebco Industries web site.

http://www.bebcoeps.com/