Bank and Office 1kva

[prattz99]

Hi all,

Is the 1kva for unknown bank and office receptacles still applicable in the 2017 NEC? I can't find the reference anywhere

I'm working through Mikes' illustrated guide to electrical exam preparation based on the 2014 NEC. In my area we are on the 2017 NEC as a result I am using my 2017 code book with Mike's 2014 exam prep. On page 349 there is a question about sizing the demand load for a hotel and and office the answer key says to us 1kva per sq foot for the office receptacles. My only problem is I don't know where it says that in the code? I've looked online and it says 220.3(a) footnote but in the code book there is no such section.

 

[david luchini]

See 220.14(K)

 

[prattz99]

See 220.14(K)

sure, but that's per strap. The questions don't give you a receptacle count only sq foot. Is 1kva per sq foot still applicable after the 2014 NEC?

 

[david luchini]

sure, but that's per strap. The questions don't give you a receptacle count only sq foot. Is 1kva per sq foot still applicable after the 2014 NEC?

I'm not sure I follow...

"1 volt-ampere/ft^2" doesn't mention "per strap" at all.

The language is the same in the 2014 and 2017 Codes.

 

[Fred B]

Table 220.12 indicate loads related to lighting calculation at 3.5Va/ft². No indication from that related per strap. Now 220.14(I),(K) indicate two means for calculation of receptacle loads on banks and office bldgs., and use the larger of the 2 methods, one of which is 1Va/ft². The other is found in 220.14(I) for 180Va per strap. From that method you determine the number of receptacles desired and add them up.