multifamily dwelling

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jkpyke

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A multifamily dwelling is supplied 120/240v single phase power, and consists of 8 individual dwelling units with a living area of 800 sq feet. In each living unit is a 10kw electric range, a 2.5 kw electric water heater, a 1.2 kw dishwasher, 2kw of electric space heat, and an air conditioner with a nameplate rated load current of 8 amps at 240v. Lanundry facilities are provided in a common area of the building. The total house load to be included in the service demand load calc. is 16250 va and includes common area lighting, outside lighting, and laundry facilities. The min. demand load, using the optional method of 220.84, permitted for sizing the service conductors and service equipment is?

If I do my calculations right, I am coming up with 420 amps. Using Table 220.84, would this be correct?
 

resistance

Senior Member
Location
WA
A multifamily dwelling is supplied 120/240v single phase power, and consists of 8 individual dwelling units with a living area of 800 sq feet. In each living unit is a 10kw electric range, a 2.5 kw electric water heater, a 1.2 kw dishwasher, 2kw of electric space heat, and an air conditioner with a nameplate rated load current of 8 amps at 240v. Lanundry facilities are provided in a common area of the building. The total house load to be included in the service demand load calc. is 16250 va and includes common area lighting, outside lighting, and laundry facilities. The min. demand load, using the optional method of 220.84, permitted for sizing the service conductors and service equipment is?

If I do my calculations right, I am coming up with 420 amps. Using Table 220.84, would this be correct?


Can you show us how you got your answer?
 
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