Engineering content

1. Electrical wiring Plan for
house
Course-
Electrical Installation and
Estimation

2. ISOMETRIC VIEW OF THE PLAN

3. INSTALLATION PLAN OF WIRING

4. SCHEMATIC REPRASATION OF THE WIRING
INSTALLATION

5. WIRING DIAGRAM

6. DECIDING THE NO OF SUB CKTS
• FOR THE WIRING INSTALLATION OF VARIOUS POINTS OF THE
ROOM SHOWN IN FIG-1 CONSIDER THE WATTAGES AS FOLLOWS
• LIGHT-60W FAN-100W POWER SOCKET-1000W
• HENCE,
WATTAGE OF LIGHT LOAD=2x60=120W
WATTAGE OF FAN LOAD=1x100=100W
WATTAGE OF POWER SOCKET=1X1000=1000W
AS PER IE RULES SEPARATE SUB CKTS SHOULD BE PROVIDED FOR
LIGHTING AND POWER LOAD.
THEREFORE, IN THIS EXAMPLE WE SHALL HAVE TWO
SUB CKTS. ONE FOR LIGHTING AND ONE FOR POWER LOAD.

7. X

8. DETAILS OF DISTRIBTION BOX
CONNECTIONS

9. DECIDING THE SIZE OF WIRES

12. LOAD DETAILS
PLACE LAMP
60W
FLOURECENT
LAMP 40W
FAN
100W
SOCKET
60W
BAT H
LAMP
25W
TOTAL LOAD
VARAND
HA
02 - - - - 120W
HALL - 02 01 01 - 220W
ROOM 01 01 01 01 - 240W
KITCHEN 02 - - 01 - 180W
BATH - - - - 01 25W
TOTAL 785W
SINCE THE TOTAL LOAD IS 785W SINGLE SUB CKT IS SUFFICIENT

14. Estimate of quantities

15. • A residential double storey building is to be electrified
with C.T.S. wiring. Decide the no of sub circuits. The
details of fittings required are as follows: