Paint booth

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Most paint booths that I have worked with are designed so that all the wiring is outside the booth including the lighting eliminating almost all special wiring requirements.

My experience with booths has been a bit different. While a great deal of the wiring is routed so as to avoid Classified areas, the doors and areas around them have normally required Art 516 attention.
 
Most paint booths that I have worked with are designed so that all the wiring is outside the booth including the lighting eliminating almost all special wiring requirements.

I agree with this, but you still have you're classified areas around the doors or openings where wiring that was original to the building might come into play if the booth is being added or if the wiring was put in not knowing exactly where the booths were going.
 
My experience with booths has been a bit different. While a great deal of the wiring is routed so as to avoid Classified areas, the doors and areas around them have normally required Art 516 attention.

This has been my experience as well.

Chris
 
The extent of the classified areas around spray booths has changed significantly in the most recent edition of NFPA 33, Standard for Spray Application Using Flammable or Combustible Materials, which is mirrored in the 2011 NEC (with errors). Of course, if you are under the 2008 or earlier NEC, the changes may not be of much help, although AHJs sometimes accept requirements in newer versions of NFPA standards even when they differ from NEC. It never hurts to ask.

The easiest way to comply is to keep wiring and devices outside of the classified areas. Often this is just a minor re-location. Where this is not feasible, pneumatic controls can sometimes be used to advantage.
 
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