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1 members (Scott35),
102
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Joined: Jun 2005
Posts: 73
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Does Flex need to be strapped when fished through a drop ceiling?
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Joined: May 2003
Posts: 2,876
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348.30 Securing and Supporting.(A) Securely Fastened. FMC shall be securely fastened in place by an approved means within 300 mm (12 in.) of each box, cabinet, conduit body, or other conduit termination and shall be supported and secured at intervals not to exceed 1.4 m (41/2 ft).
Exception No. 1: Where FMC is fished. Dropped ceiling with removable panels just means laziness...
Mark Heller
"Well - I oughta....." -Jackie Gleason
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Joined: Jun 2005
Posts: 73
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Laziness? Having to open every tile on a 100+' run is alot more then opening 3 or 4.
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Joined: Jan 2003
Posts: 4,391
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I do not believe for a minute that the inspector will agree that a suspended ceiling run is 'fished'.
IMO you will have to support the FMC off the ceiling.
Bob Badger
Construction & Maintenance Electrician
Massachusetts
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Joined: Jul 2005
Posts: 33
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I agree with e57.
To put things in perspective.
100' run- 4' tiles= 25 tiles. Open every other one to strap means 12-13 tiles opened.
If tiles are 2' long then you open every 2-3 tiles, 15-25 opened. Whats the big deal. Leaving flex laying on tiles is lame. It's bad enough when the LV guys do it.
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Joined: Jul 2004
Posts: 272
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I believe the NEC now requires even low voltage cables to be supported in dropped ceilings. I don't think laying the cables accross the grid is acceptable anymore.
[This message has been edited by A-Line (edited 12-04-2005).]
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Joined: Jun 2005
Posts: 73
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Every 4.5' would be every tile. It was not fished just straight across the tile but over whatever was available to support it without getting in there.
[This message has been edited by Wireless (edited 12-04-2005).]
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Joined: Jan 2003
Posts: 1,429
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We just went thru this with a store, the LV guy fished the camera cables, no permit, just one problem the fire, and construction offical were in the store at the time, finally they caught a live one, the store owner was not very happy, paying to have it done right.
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Joined: Dec 2003
Posts: 886
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Probably a better question is why are you using 100 feet of greenfield in one run?
-Hal
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Joined: Jun 2005
Posts: 821
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And if it was piped in say E.M.T. it would only have to be supported every 10'. I have to agree with everyone else here, do it right the first time and support the flex to what the code calls for. Good luck.
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Posts: 28
Joined: May 2007
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