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#83004 - 01/01/03 10:31 AM warehouse drop cords
Cindy Offline

Registered: 06/23/01
Posts: 196
Loc: PDX, OR, US
can anybody think of a code restriciton for how many receptacles that can be put on a cord dropped from a ceiling? 2-gang 4-gang 6-gang or any of these multi-gang boxes connected back to back by a nipple? all i can think of is load calc issues from 220, anything else?

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#83005 - 01/01/03 11:05 AM Re: warehouse drop cords
Bjarney Offline

Registered: 04/10/02
Posts: 2561
Loc: West-Southern Inner-Northeast ...
10/5 SO cord on a 20-amp 4WY branch circuit could conceivably feed a number of 120V receptacles. Please, though, support the box(es) by eyebolts/wire rope and use Kellems basket-grip connectors on the cord ends.

Now, someone else can bring up the misapplication of “floating” knockout boxes.

#83006 - 01/01/03 02:38 PM Re: warehouse drop cords
Joe Tedesco Offline

Registered: 10/07/00
Posts: 3325
Loc: Boston, Massachusetts USA
Now, someone else can bring up the misapplication of “floating” knockout boxes.

314.23(H) Pendant Boxes.

An enclosure supported by a pendant shall comply with 314.23(H)(1) or (2).

(1) Flexible Cord. A box shall be supported from a multiconductor cord or cable in an approved manner that protects the conductors against strain, such as a strain-relief connector threaded into a box with a hub.

400.10 Pull at Joints and Terminals.

Flexible cords and cables shall be connected to devices and to fittings so that tension is not transmitted to joints or terminals.

FPN: Some methods of preventing pull on a cord from being transmitted to joints or terminals are knotting the cord, winding with tape, and fittings designed for the purpose.
Joe Tedesco, NEC Consultant

#83007 - 01/01/03 04:52 PM Re: warehouse drop cords
Cindy Offline

Registered: 06/23/01
Posts: 196
Loc: PDX, OR, US
well, ok here's the long story. i've looked for something that would prohibit putting multiple ganged boxes on cord drops, but haven't found it. right now this warehouse manufacturing business just has single gang boxes with plug strips, relocatable power taps according to UL, and has kellum grips connected pretty well to the framing. i'm doing some other work there but i don't like the way they have used the plug strips on the drop cord receptacles, and would like to suggest a better mousetrap. i know these guys are cheap so they won't go for adding drop cords and haven't had any trouble overloading circuits. but don't you think suggesting a multigang box or boxes would be better? these relocatable power tap cords aren't as big as the drop cord. but i am just not sure if i would be right to suggest it because of possible code restrictions. thanks y'all

#83008 - 01/02/03 04:21 AM Re: warehouse drop cords
Redsy Offline

Registered: 03/28/01
Posts: 2138
Loc: Bucks County PA


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