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#107878 07/10/04 12:30 PM
Joined: Jan 2003
Posts: 4,391
Scott yes I meant 645.5(E)sorry. [Linked Image]

That aside I stand by my statement read this section carefully and look for the 'or'. [Linked Image]

645.5(E) Securing in Place. Power cables; communications cables; connecting cables; interconnecting cables; and associated boxes, connectors, plugs, and receptacles that are listed as part of, or for, information technology equipment shall not be required to be secured in place.

You can read that or with two different meanings. [Linked Image]

Cables listed as part of, or cables for information technology equipment.

The premade whips we get are listed as part of the info. tec. equp.

Bob Badger
Construction & Maintenance Electrician
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#107879 07/10/04 03:06 PM
I think there may be a possible violation with the type of sealtight that is used. If the underfloor space is used as a plenum I doubt if the grey sealtight is rated for use in plenum spaces.

#107880 07/10/04 03:39 PM
Joined: Dec 2000
Posts: 4,291
Bob,I also stand by mine

645(D)...."shall be permitted under a raised floor, provided the following conditions are met."
(2) "The branch-circuit supply conductors to receptacles or field-wired equipment are in rigid, metal conduit, rigid nonmetallic conduit, intermediate metal conduit, electrical metallic tubing, metal wireway, surface metal raceway with metal cover, nonmetallic surface raceway, flexible metal conduit, liquidtight flexible metal conduit, or liquidtight flexible nonmetallic conduit, Type MI cable, Type MC cable, or Type AC cable.
These conductors shall be installed in accordance with the requirements of 300.11"

"300.11 Securing and Supporting
(A) Secured in Place.
Raceways, cable assemblies, boxes, cabinets and fittings shall be securely fastened in place"........

If that were the case, all of 645(D)(2) would be for nothing.
Do you agree that it's just sealtite and boxes field assembled?
Under your reasoning, could I run EMT without securing it?

Glad to see we're back to our "normal" selves [Linked Image]
I was fearing we'd begin to agree on everything [Linked Image] [Linked Image]

#107881 07/10/04 03:46 PM
Joined: Jan 2003
Posts: 4,391
I had to disagree I was feeling to nice! [Linked Image]

I agree you are correct about the intent. [Linked Image]

Read 645.5(E) and notice no mention of EMT or LFMC the ease of supports is only for cables and the assoiciated boxes.


Bob Badger
Construction & Maintenance Electrician
#107882 07/10/04 06:13 PM
Joined: Jun 2004
Posts: 28
When working for a mulitnational company, the home office computer room did this to ensure that no computer or component was accidently disconnected while cleaning, moving, or regular maintenance.

The computer room had a master disconnect push button tho.

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