Development of Residential Central Air Conditioning Transformer Load Management Correlation Equations

The conventional peak kVA-kilowatthour usage relationships are not applicable for determining the peak kVA for transformers serving residential central air conditioning customers. The values of peak kVA for corresponding values of kWh consumption are significantly higher on transformers serving central air conditioning than those serving non-air conditioning loads. Traditionally, kWh sales has been, in most instances, the only parameter utilized in computing the peak kVA with remarkable success (standard errors usually do not exceed 6 kVA). However, the peak kVA found from kWh´s for transformers consisting of air conditioning loads usually-possess standard errors well over 16 kVA.