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Cord drops in warehouse #213944 09/10/14 05:20 PM
Joined: Sep 2014
Posts: 2
K
kit Offline OP
New Member
I am working in a 100,000 sq ft warehouse, it is 36' to the bar joists. It has racking throughout the warehouse with shipping and receiving areas. There are workstations with desks, computors, copiers and etc throughout the warehouse in various locations. They need power and data to these desks. I want to know how to get power down from the bar joists above to the work stations that OSHA and the NEC will approve. Can I drop from the bar joists at 36' with a cord and put a box with a plug on it? I wold use wir grip (kellems) on both ends of the cord and boxes with hubs.

2017 / 2014 NEC & Related Books and Study Guides
Re: Cord drops in warehouse [Re: kit] #213945 09/10/14 06:27 PM
Joined: May 2005
Posts: 984
G
ghost307 Offline
Member
Most of the installation that I have seen for this involve putting the desks against a wall or column and using that as a conduit route from the roof trusses down to the furniture.
A free-hanging (and free-swinging) cord would likely not be looked upon kindly by the AHJ.


Ghost307
Re: Cord drops in warehouse [Re: kit] #213946 09/10/14 07:50 PM
Joined: Jul 2004
Posts: 9,556
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gfretwell Offline
Member
Pendant cords are legal but you need the right strain relieving hardware, hard service cord and generally twist lock receptacles.
If they are not moving these around, you could come floor to ceiling with strut and strap EMT to that. Hang a box there.


Greg Fretwell
Re: Cord drops in warehouse [Re: kit] #213947 09/10/14 09:30 PM
Joined: Apr 2002
Posts: 7,225
HotLine1 Offline
Member
High cube warehouses have EMT secured to the rack uprights, protected from any physical damage. The furniture is placed where the outlets are located. EMT for data also.

NEC 400.8, and 400.7 is where to look.

I accept, depending on the individual job, a twistlock receptacle at the bar joists, a kellems, and a TL male cap with a compliant device on the 'user' end of the cord. (Basically an 'extension cord)

Cord drops are an item that has been debated for a long, long time. IMHO, talk to your local AHJ, before you start.



John
Re: Cord drops in warehouse [Re: kit] #213950 09/11/14 08:16 AM
Joined: Sep 2014
Posts: 2
K
kit Offline OP
New Member
Thanks for the help, looks like there is a lot of work to do to straighten up what they have.


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