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12.5A through 0.75mm˛ flex (just out of curiosity)
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#195391 - 07/29/10 08:25 PM flexible conduit repair
jay8 Offline

Registered: 07/28/05
Posts: 183
Loc: Vancouver, BC
Anyone know of an approved product that can be used to repair broken/separated flexible metallic conduit? I have a 4" flex with 500mcm feeders to switchgear with the flex broken. So I am hoping I can repair in place without shutdown, remove,replace flex, repull, reterminate, etc etc.

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#195394 - 07/29/10 08:35 PM Re: flexible conduit repair [Re: jay8]
HotLine1 Offline


Registered: 04/03/02
Posts: 6792
Loc: Brick, NJ USA

There is no product that I know of for what you described.

Looks like an R&R job

#195398 - 07/29/10 08:46 PM Re: flexible conduit repair [Re: HotLine1]
gfretwell Offline


Registered: 07/20/04
Posts: 9026
Loc: Estero,Fl,usa
The first question would be how was it separated in the first place. You may have a physical damage problem that precludes FMC.
I have seen people weave this stuff back together but I still would not try it hot. This was not uncommon under computer room floors. I even had a picture in the IAEI magazine of that. Joe T may still have it on his web site in the violations area.
Greg Fretwell

#195405 - 07/30/10 04:06 PM Re: flexible conduit repair [Re: gfretwell]
Tesla Offline

Registered: 06/16/04
Posts: 1280
Loc: Sacramento, CA
Such damage, presumably within the Electrical Room, is very disturbing.

I rather suspect that the flex was buckled during the original installation.

Alternately, the custodian/owner has been stacking 'stuff' on top of the flex until failure.

We've all seen it: the E Room becomes the closet to jamb everything under the sun for the custodian.

I see an R&R in your future.

#195409 - 07/30/10 10:41 PM Re: flexible conduit repair [Re: Tesla]
noderaser Offline

Registered: 03/01/07
Posts: 405
Loc: Portland, Oregon, United State...
Duct Tape :P

#195459 - 08/03/10 07:34 PM Re: flexible conduit repair [Re: Tesla]
jay8 Offline

Registered: 07/28/05
Posts: 183
Loc: Vancouver, BC
It was likely due to installation damage since its location makes it unlikely to be hit. It was a little tedious but I was able to wind it back together since it was fairly close to the connector, which saved quite a bit of grief. I knew there were approved kits to repair in use underground conduit, so I was fishing for something similar for flex. thanks for the feedback - i will save the duct tape repair idea for another time.


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