Kitchen demand

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kwired

kwired

Electron manager
Location
NE Nebraska
cppoly said:
Table 220.56.

For commercial applications.

Wasn't sure if there's a distinction between a kitchen and a pantry.
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Well the NEC defines the word kitchen

Kitchen. An area with a sink and permanent provisions for food preparation and cooking
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The demand factors you are speaking of are probably from 220.56. The question is whether or not they intend these factors to apply to only equiment in the area with a sink, I don't think that is the intent, as I have been in many commercial kitchens where there is significant load from cooking equipment that is not in the immediate area where there is a sink. Putting it in the area of the sink will not change what the power demand is. JMO.

I think there should be a dwelling unit definition for the word kitchen, as well as a non dwelling unit definition. The one there is fits dwellings pretty well, but not always non dwellings, JMO.
 
C

cppoly

Senior Member
Location
New York
So you apply the demand factors in table 220.56 if there's a sink with equipment such as microwaves, dishwashers, coffee makers, etc.?
 
kwired

kwired

Electron manager
Location
NE Nebraska
cppoly said:
So you apply the demand factors in table 220.56 if there's a sink with equipment such as microwaves, dishwashers, coffee makers, etc.?
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Like I said I think this needs more clairification.

220.56 Kitchen Equipment — Other Than Dwelling Unit(s). It shall be permissible to calculate the load for commercial electric cooking equipment, dishwasher booster heaters, water heaters, and other kitchen equipment in accordance with Table 220.56. These demand factors shall be applied to all equipment that has either thermostatic control or intermittent use as kitchen equipment. These demand factors shall not apply to space-heating, ventilating, or air-conditioning equipment.

However, in no case shall the feeder or service calculated load be less than the sum of the largest two kitchen equipment loads.
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Have you been in a commercial kitchen where there is a cooking appliance, warmer, or maybe even more common the mentioned water heater is not in the same room/area as any sinks? Put the same appliance in room with the sink and that is going to change the actual demand? I think it will be same no matter where they are located. I think that even a self service buffet in the dining area, and its associated warmers (or chillers) or beverage warmers, brewers and the like are intended to be included in this demand factor. Similar equipment is in the actual kitchen itself sometimes and the actual demand does not change just because it is in the kitchen IMO.

But the NEC definition of kitchen does not always contain some of these appliances because they are not always actually in the "kitchen"
 
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