Load Calculations

Load calculations 

Light load;  bulb, fan, 5A socket  these are  light load 

Power Load;  15A socket, Heater,AC ,gyser,  exhaust fan these are power load 

These 2 condition always friends you learn to do numarical  

Condition for circuits; 

Light load : 800w & 10 points

Power load : 3000w & 2 point 

First a fall we take a eg of 1 numarical  easily  understand friends 

Eg  Numarical 

1 The House has following Load :-

ROOM 1 :-  FAN              :-    1                                  Tube Light  :-   2

5A socket    :-    3 

     AC   1.5 ton :-    1

       Kitchen;               Tube Light   :-    2                                                    5A socket   :-   2 

                                                                          

                

ROOM 2 :-  FAN              :-    1         

               Tube Light   :-    2        

  AC   1 ton    :-    1

           Bathroom :-   Tube Light  :-  1 

                                                              Gyser (  15A socket ) :- 1

                     5A socket    :-    1

                   

Note :- ( Fan = 80 W , Tube light = 40 W , 1 ton AC = 1500 W , Gyser = 2200 W, 5A socket = 750 W )

Do step by step Numerical and write down all conditions for each type of load

Find out the Total Circuits in the house and Total no. of Mcb’s and Size of DB Box.Also find out size of wire

First a fall calculate total load of Room 1 and Room 2 

Room 1 

1 Fan  * 80 w =80

2 tubelight * 40w=80

3 5 A socket* 750w=2250

1 AC  1.5 ton*2250=2250

Total.                     4660w

Room 2 

1 Fan * 80

2 tube light  *40

1 5 A socket* 750

1 AC 1 ton* 1500

Total.         2310w

Kitchen 

2 tubelight * 40 

2 5 A socket * 750

   Total.          1500 w

Bathroom 

1 tube light * 40

1 15A socket * 2200

Total.             2240w

Calculate light load 

Light circuits;  7 

Power circuit;  3

There are 10 way to connect MCB in house

Size of Distribution Board is 10 way 

Same as MCB  size of DB

Total No. Of circuits : 10

Total No. Of MCB;  10

total No. Of Distribution board;  10- way 

I hope you understand step by step