Electrical load

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ramgabito

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hey!! I was wondering what is a typical loading of an office space with a data room (which contains, super hi-tech, utra-fast computers) in kv per square meter. As per table at NEC 220.14, office is 39 KV per sq m. However the title of the table is about light... something. I was hoping that I could get the standard for this as a refference.

Thanks!!! :grin:

Ram
 
I don't know of a particular standard for such an area but the NEC states
39VA or 39 Watts ,not KVA as you posted, per sq. meter or 3.5 watts per sq. foot.

Also Look at art. 220.14 (I) & (L) .
 
A recent article in a trade magazine said that a high density blade server rack can have loads up to 30kW not including the load for the required cooling which may be another 8 to 10 kW. This rack would fit in about 1 square meter of floor space.
Don
 
What type of heat is in the office? What type of lighting? Is it in a multiple occupancy building where the adjoining spaces contribute to the HVAC load or a stand-alone building? How many times does it have to be said? THERE ARE NO SHORTCUTS!!!! In order to determine the electric load in an occupancy you must do an article 220 calculation. It is not rocket science, just follow the steps. If you have the required information on the equipment to be installed (and I know that is a huge problem as it is difficult to collect this information) the actual calculation may be done in a few minutes. These "ballpark" calculations don't help anyone. Without doing the proper calculation someone is going to end up disappointed. You are either going to be held to your ballpark figure, or the customer is upset because the actual load (thus cost) is higher than your ballpark. If you pad the ballpark figure enough to cover all eventualities, you probably won't get the job. The bottom line is that nobody benefits from bad estimates. Do it right the first time or don't do it at all!
 
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