Equipment electrical enclosures

[caporter]

Just received a large tool to install that has a large area open for ventilation. I would be fine with that except a 6" wide by 36" tall part of that area leads into the electrical controls at 480V. Are there requirements for electrical cabinets to be enclosed, finger safe, and of sufficient construction to be able to contain an arc blast up to the rated fault current.

 

[dpc]

As for enclosed and finger safe, that would depend on the standard that the equipment is manufactured to.

As for being arc-blast resistant, that is almost certainly not a standards requirement unless specified at time of purchase.

If you can provide more info on the equipment and relevant standards, there's probably someone here who can provide more details than I can.

David Castor

http://www.cvoes.com

 

[JLSeagull]

A NEMA 1 enclosure provides little in the way of enviromental protection and is intended to keep fingers out.

 

[caporter]

DPC - the manufacturer has placed no stickers or anything on the tool indicating it was built to any specific code or went through any 3rd party testing. I was thnking it was refered to in general under 29 CFR 1910.303 or something and all of the standards spelled it out. I can't find anything of the sort.

JLS - the manufacturer used a heavy gage piece of sheetmetal with a few bends to form the electrical backplane. It is enclosed on all but one side and that side is a 6x30" rectagular opening. To me it is like have a circuit breaker enclosure with a dead front panel and one open side mounted to a unistrut rack.