Can you use table 220.44 to derate office plugs? So far I see it being a no? Derate only applies to 220.14 H and 220.14 I. It does not reference offices 220.14 K. It is assumed that the table 220.44 can be applied to all calculated receptacles other then dwellings and offices.
Office Feeder Calc
- Thread starter AlexP
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220.14 is under Part II - Branch-Circuit Load Calculations. 220.44 is under Part III - Feeder and Service Load Calculations. You can use Table 220.44 demand factors for your feeder and service calculations, but not for your branch circuit calculations (not that you would have over 10kVA of general receptacle load on a branch circuit anyway).
Can you provide code backup for this?
220.14(K) Office Buildings. In office buildings, the receptacles shall be calculated to be the larger of (1) or (2):
This value can't be derated because 220.14(I) does not specify any derate for receptacles. 220.14(K)(1)also does not specify any derate. Because it references back to 220.14(I), no derate specified. 220.14(K)(2) does specify a minimum load. But 220.14(K) specifies the larger of (1) or(2). There is no derate specified for office receptacles.
This value can't be derated because 220.14(I) does not specify any derate for receptacles. 220.14(K)(1)also does not specify any derate. Because it references back to 220.14(I), no derate specified. 220.14(K)(2) does specify a minimum load. But 220.14(K) specifies the larger of (1) or(2). There is no derate specified for office receptacles.
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- Engineer
220.14(K)(1) says the load calculated in 220.14(I) AFTER DEMAND FACTORS have been applied. The demand factors applied to 220.14(I) are found in 220.44.
Again, 220.14 is for branch circuits. There is no demand factor for receptacles at the branch circuit level. 220.44 is for feeder and services and starts with the load from 220.14 and then applies the demand factors permitted. You have to read the parts of the code around the specific requirements you are referencing to see exactly where the requirements apply.
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