What is demand load/ diversity factor in electrical load?

During the electrical load calculations, you come across different terms like connected load, demand load, diversity factor and load factor etc. Proper understanding of all these terms is very important to understand the behavior and pattern of the load and getting accurate results.

We start to deal all these terms one by one below:

Connected Load:

It is the total sum of connected electrical appliances with any system. Lets take example of any house where multiple appliances like Iron, washing machines, computers, TV, Microwave, Hand dryer, Water heater, motor pump etc. are present which are used during different period of the time as per their requirement and their total sum is 15KW. This is called connected load.

Diversity Factor:

All connected appliance never operate at the same time. So keep this in mind we used we use the word diversity which means, how much percentage of connected load might be operated at the same time. that’s percentage factor called diversity factor.


If house is having connected load of 15 KW and we can estimate the what is the maximum probability of load that can run simaltaneously so we can set diversity accordingly. In general, for house, you can take 65 to 70% diversity but it could vary from project to project.

Demand Load:

It is the maximum value of the load which can run in a building or house for any specifi period of the time.

After applying diversity on the load, the value of load you get is demand load.


For load of 15KW, you apply diversity of 65% it means you multiply 15KW into 0.65.

    \[      \boxed{15*0.65 = 9.75}KW\]

so, 9.75Kw is the demand load.

On the basis of demand we design infrastructre of any building accordingly.