Maximum Demand Calculation →

Diversity Factor=∑(Individual Max Demands)System Max DemandDiversity Factor equals the fraction with numerator sum of open paren Individual Max Demands close paren and denominator System Max Demand end-fraction Coincidence Factor ( The reciprocal of the diversity factor (

Example: For a single-unit cooking appliance, you might take the first 10A + 30% of the remainder of the full load. 3. Sum the Diversified Loads

Transformer size: 36.4 / 0.9 PF = 40.4 kVA → 50 kVA. maximum demand calculation

Manual calculations are becoming obsolete. Today, engineers use:

Oversizing a system leads to unnecessary expenses in heavy-duty wiring and equipment. Manual calculations are becoming obsolete

Most commercial tariffs include a kVA demand charge (e.g., $15 per kVA per month). An accurate MD calculation allows you to negotiate a lower contracted capacity with the utility. Overestimating by 200 kVA could cost you $36,000 annually in wasted demand charges.

Demand factors are always less than or equal to 1.0. They vary based on the facility type (e.g., residential vs. industrial) and the specific nature of the loads. An accurate MD calculation allows you to negotiate

The importance of accurate MD calculation cannot be overstated. For the , the sum of all customers’ maximum demands (diversified demand) determines the required generation, transmission, and distribution capacity. Overestimating MD leads to stranded assets; underestimating leads to brownouts or equipment failure.