Maximum Demand Calculation

Does not affect MD unless start duration > demand interval. For large motors, use staggered starting or soft starters.

Who should use this method?

Who should be cautious?

Gone are the days of manual spreadsheet guesswork.

Golden Rule: kVA = kW / Power Factor. A low PF (e.g., 0.7) means your kVA demand is 43% higher than your kW demand. maximum demand calculation

[ kVA = \frackWPower\ Factor ]

Assume PF = 0.85:
( 18.58 / 0.85 = 21.86 \ \textkVA ) → Round to 25 kVA transformer. Does not affect MD unless start duration >

Final note: Maximum demand calculation is both a science (standards-based factors) and an art (engineering judgment). When uncertain, measure real data with a power logger — no calculation beats actual interval metering. For new designs, always add margin and confirm diversity assumptions with the end user.