A convenience outlet under the NEC is called a general-purpose receptacle. Such a receptacle has no specific load.Is there a place in the NEC that defines PCs as convenience outlets? I think that since PCs are on 24 hours a day in most commercial offices they wouldn't be considered convenience for the purposes of demand calcs. For a 100,000 VA of PCs a demand factor or not can make a big difference.
That's sort of the point I was trying to make in my system only drawing 250W. I built my computer so it doesn't have a nameplate, but I know it has a 1200W power supply. AFAIK, the nameplate rating on a manufacturer built computer is likely to indicate the power supply rating, as that will be the worst-case current.Good question about the load. I guess the only way to know for sure is see the current draw off of the PC nameplate.
I wouldn't call a PC an appliance, but that's moot as it is a load. There is no fault in your premise. IMO, this is an area of design decision.220.44 demand factor for receptacles apply only to 220.14 (H) & (I). Section 220.14 (A) Specific Appliances or Loads says an outlet for a specific appliance OR other load not covered in 220.14(B) through (L) shall be calculated on the appliance or load served. A PC is a specific appliance so wouldn't this fall into 220.14 (A)? Demand factor isn't applied to 220.14(A) so PCs wouldn't get a demand factor. Is this correct?