Question 1.1

At 20:00 hours there is a difference of 20V between the voltage measured across the

loads in the home network and the voltage measured at the substation.

Estimate the value of the underground cable resistance Rc that would cause such a

voltage difference.

Question 1.2

Assume that the underground cable resistance is equal to Rc = 5 02.

Calculate the value of the average current flowing from the substation into the home

network during the time interval between 19:00 and 22:00

Question 1.3

Assume that the underground cable resistance is equal to Rc = 50.

Calculate the peak power loss in the underground cable during the 24-hour time period.

Question 1.4

Assume that the underground cable resistance is equal to Rc = 5 Q.

Calculate the total current flowing from the substation to the home network if all the

available appliances are switched on (ignore the time schedule).