Main switch rating: Next standard size = (compliant).
Example: EV charger + AC + cooktop + dryer → a controller can stagger operation so the measured 30-minute MD never exceeds 63A, even though the sum of breakers is 150A. maximum demand as3000
This shifts MD from a static calculation to a . Final Thought Maximum Demand is not about what could happen. It is about what reasonably will happen over 30 minutes, under normal use. Master the diversity tables, respect harmonics, and understand the economic consequences. That is the difference between a compliant design and an optimal one. Main switch rating: Next standard size = (compliant)