example 2.3   

maximum demand of each appartment =2.50kWh 
maximum demand of 600 apatments =500.00kW 
demand of 600 apartments at time of the system peak =400kW 
maximum demand of total commertial complex=48kW 
demand of the commertial load at the time of the peak = 30kW
demand of the street lighting at the time of the system peak =8kW
increase in system peak deamand =438kW