Calculation of office partition

[brother]

Would you calculate office partitions receptacles/cubicles from the rules of 220? I thought there was a special calculation for the receptacles of these partitions but apparently not, I Could not find one in the 2008 NEC.

I remember that someone asked me what is the 'maximum' receptacles you can have in the partition. I answered and said it depends on how many circuits are feeding it. Basically a single 20 amp branch circuit can feed a maximum of 13 duplex receptacles (180 va per receptacle yoke).

Then there was a debate on the the 'yoke' issue/definition with a fellow electrician. These receptacles just 'snap' in on these partitions, and some would consider that like a multoutlet assembly found in 2008NEC 220.14(H) and said you can calculate it as such. I disagreed, and said it should be calculated like you would do any receptacles on branch circuits. What is your opinion?? This is a commercial setting.

 

[Leestarkweather]

13 per circuit is probably right

13 per circuit is probably right

Most cubicles have 3 receptacles per cubicle, unless they are wired just down the common wall and not the side walls. When each cubicle has a PC and Monitor (and a lot have printers), we never wire more than 4 cubicles per 20A 120V circuit (allows 4 Amps -=480W per cubicle), and prefer 3 per ckt.

Of course, all the preplanning in the world is kaput when the workers bring in their 1500W space heaters (or microwaves, or minifridges) and pop the CB's, they look at you on the service call and say "Why can't I plug it in there, there's an open outlet". That's when I dial up my wife and have her share her theory that if there's checks in the checkbook we must have money to cover the checks.:grin::grin: