Final answer:
The service neutral conductor load for the electric ranges installed in the six-unit multifamily dwelling is 63 kVA.
Step-by-step explanation:
The question asks for the calculation of the service neutral conductor load (VA) for electric ranges in a multifamily dwelling. Given that we have electric ranges with various power ratings (9 kW, 9 kW, 10 kW, 11 kW, 12 kW, and 12 kW), we need to calculate the cumulative load that the service neutral conductor would need to handle.
In order to determine the service neutral conductor load (VA) for the electric ranges installed in a six-unit, multifamily dwelling, we need to add up the individual power ratings of each range. The ranges in this case are rated at 9 kW, 9 kW, 10 kW, 11 kW, 12 kW, and 12 kW.
To calculate the total load in VA, we first convert the power ratings from kilowatts to volt-amperes by multiplying them by 1000. Then, we simply add up the converted power ratings:
Total load (VA) = (9 kW + 9 kW + 10 kW + 11 kW + 12 kW + 12 kW) x 1000
= 63,000 VA
To find the total load in VA (since 1 kW = 1 kVA for purely resistive loads with power factor of 1), we sum up the individual power ratings of the electric ranges:
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Therefore, the service neutral conductor load for the electric ranges installed in the six-unit multifamily dwelling is 63 kVA.