Purge Requirements in a Hazardous Enviroment

[Ollie@Aegis]

Can anyone tell me how I can get the Purge Requirements for any Hazardous Locations?

I have had a lot of people tell me, "You need THIS", or "You need THAT". And I ask, why? Or what standard does that follow, and they can not tell me.

What I'm looking for is a NEC Standard or ANY standard that tells me that when I am in Class X Group X Div X, I need Y to safely operate electrical equipment in this environment.

THX!!!

[rcwilson]

Take a look at NFPA 496 "Standard for Purged and Pressurized Enclosures for Electrical Equipment" 2003. It defines the Type X, Y, Z purging.

But it still will take some thinking to determine what equipment to install.

Good Luck.

[Ollie@Aegis]

Thank you for the reply.

Can you steer me in the direction of where I can find the before mentioned document? For that matter, where can I find a copy of the NEC?

[petersonra]

They are both publications of the NFPA. They can be purchased from that web site.

I would caution you that this is not a "do it yourself" type project. It would probably be best if you just turned this over to someone qualified to handle it.

[Ollie@Aegis]

Thanks for your concern.

The project has been completed successfully already. All purged equipment was spec'ed by the customer for whom this equipment has been installed for.