The total net calculated load for the dwelling, in VA units, is 17,500 VA.
To calculate the total net calculated load for the dwelling in VA (Volt-Amperes) units, you can follow the steps provided below, referring to Annex D, example D1(a) for a One Family Dwelling in the National Electrical Code (NEC):
1. Identify Appliances:
- You have two appliances: a 12 kW range and a 5.5 kW, 240-V dryer. These appliances will contribute to the total load.
2. Convert kW to kVA:
- According to NEC 220.54 and 220.55, you can assume that the kW ratings are equivalent to kVA ratings for these appliances.
- The range's kVA rating is 12 kVA (since it's equivalent to 12 kW).
- The dryer's kVA rating is 5.5 kVA (since it's equivalent to 5.5 kW).
3. Apply Demand Factors:
- Annex D, example D1(a) provides demand factors to apply to various loads in a one-family dwelling.
- In this example, a demand factor of 100% is applied to the range and dryer.
4. Calculate the Load:
- Start by adding the kVA ratings of the range and dryer since their demand factors are 100%:
Total load = (12 kVA) + (5.5 kVA) = 17.5 kVA
5. Convert to VA:
- To express the load in VA, simply multiply by 1,000 (since 1 kVA = 1,000 VA):
Total load in VA = 17.5 kVA * 1,000 VA/kVA = 17,500 VA