conduit or free air

[snowman]

When can you run wire exposed that is less than 600 volts?
I visited a job this week that the electricians used unistrut as a raceway and a perforated angle that I have never seen before as a raceway with EMT for motor drops in an industrial facility.
Wire was free aired into disconnects and motors. Is this legal?

 

[tonyi]

Re: conduit or free air

Originally posted by snowman:
When can you run wire exposed that is less than 600 volts? ...in an industrial facility...
Is this legal?

If it was BIG wire 1/0+ (#4+ is OK for gnds), or welding cables then single conductors can be run in cable tray if listed for use in cable trays, blah, blah, blah...

http://www.click-n-go.cc/

Was it something like this stuff you saw? The 2" might look like a chunk of strut from a distance.

[ September 30, 2003, 03:21 AM: Message edited by: tonyi ]