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12.5A through 0.75mm˛ flex (just out of curiosity)
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#56511 - 09/23/05 08:33 AM flexible metal conduit
drgnz23 Offline
Member

Registered: 02/17/02
Posts: 56
Loc: 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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#56512 - 09/23/05 09:46 AM Re: flexible metal conduit
Alan Nadon Offline
Member

Registered: 03/10/05
Posts: 398
Loc: 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.

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#56513 - 09/23/05 11:27 AM Re: flexible metal conduit
drgnz23 Offline
Member

Registered: 02/17/02
Posts: 56
Loc: 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.

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#56514 - 09/23/05 01:15 PM Re: flexible metal conduit
Joe Tedesco Offline
Member

Registered: 10/07/00
Posts: 3325
Loc: 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

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#56515 - 09/23/05 07:36 PM Re: flexible metal conduit
Peter Offline
Member

Registered: 06/08/04
Posts: 93
Loc: San Diego
How exactly is the EMT supposed to be held together without couplings?
~Peter

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#56516 - 09/23/05 08:13 PM Re: flexible metal conduit
electricbill Offline
Member

Registered: 02/19/05
Posts: 20
Loc: chester ny usa
EMT is 10' long top plate to bottom plate(wall interior) is less than 8' no coupling concealed.
bill

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