Maximum demand refers to the highest electrical load expected to be drawn from a supply point at any single time. It is a critical design feature because it dictates the size of distribution cables, main protective devices, and the overall incoming supply capacity from the network operator. Core Calculation Methods
Application of Diversity Factors: Applying percentage reductions based on the probability that not all equipment will operate at full capacity simultaneously. maximum demand calculation
Equipment must be rated to handle the MD, not just the average load. Undersizing based on average load will lead to tripped breakers or overheating during peak times. Maximum demand refers to the highest electrical load
Each unit:
Elias pointed to a specific formula on the screen: $$ \textDiversity Factor = \frac\textSum of Individual Maximum Demands\textMaximum Demand on the Station $$ Motor 1: 100 kW (runs continuously) Motor 2:
[ MD_total = \frac\sum_i=1^n MD_individual\ feeder\ iDiversity\ Factor ]
You cannot simply add up the ratings of every circuit breaker in a building. If you did, a standard home might seem to require 150A, even though the main fuse is only 60A or 100A. This discrepancy is resolved through Diversity.