flexible metal conduit

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flexible metal conduit #56511
09/23/05 10:33 AM 09/23/05 10:33 AM

drgnz23

OP
Member

Joined: Feb 2002
Posts: 56
los angeles

Okay I work in a laboratory enviroment where i have to install two new receptacles in a room. Is it legal to run flex down the wall or do i have to run EMT? Maybe about forty feet long? Please help

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Re: flexible metal conduit #56512
09/23/05 11:46 AM 09/23/05 11:46 AM

Alan Nadon Offline

Member

Joined: Mar 2005
Posts: 399
Elkhart, IN. USA

Not a Code violation unless exposed to physical damage.
Also refer to Section 250.118(6) Lengths over six feet MUST have a grounding conductor.
Alan--

Alan--
If it was easy, anyone could do it.

Re: flexible metal conduit #56513
09/23/05 01:27 PM 09/23/05 01:27 PM

drgnz23

OP
Member

Joined: Feb 2002
Posts: 56
los angeles

Always run a grounded conductor.
Just having a discussion with my leadman and he thinks we should run EMT in walls. Without ripping away walls Flex should be legal to run. He swears that in our enviroment flex shouldnt be used. I cant find anything that says we cant.

Re: flexible metal conduit #56514
09/23/05 03:15 PM 09/23/05 03:15 PM

Joe Tedesco Offline

Member

Joined: Oct 2000
Posts: 2,749
Boston, Massachusetts USA

EMT (Thinwall) is allowed to be fished without couplings.

Quote

358.30(A)

Exception No. 2: For concealed work in finished buildings or prefinished wall panels where such securing is impracticable,
unbroken lengths (without coupling) of EMT shall be permitted to be fished.

Joe Tedesco, NEC Consultant