Assume a 900 square foot apartment will have a small appliance load of 3,000 volt-amperes, and a 10kW range. Calculate the load used to determine the size of subfeeder conductors.
What will be an ideal response?
General lighting load:
900 square feet X 3 volt-amperes per square foot = 2,700 volt-amperes
Small appliance load: 3,000 volt-amperes
Small appliance load + General load = 5,400 volt-amperes
Demand Factors:
3,000 @ 100% = 3,000 volt-amperes
2,700 @ 35% = 945 volt-amperes
Net Computed Load: 3,000+945=3,945 volt-amperes
The Code® indicates that for a single household rated at not over 12 kW, the maximum demand may be based on 8 kW. Thus, total computed load (including range) is:
3,945+8,000=11,945 volt-amperes
amperes=11,945/240 = 49.77 amperes
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