Correct Answer - Option 4 : 1000 W
Internal Wiring Estimation:
Determination of Total Load :
For the determination of the total load of an installation the following rating may be assumed unless the values are known or specified.
Fluorescent lamps (choke type): 50 W
Incandescent lamps, fans, and socket outlets: 60 W
Power socket outlets: 1000 W
Exhaust fans (As per the capacity of exhaust fans)
Determination of Number of Sub-Circuits:
- In one light and fan sub-circuit, the maximum load that can be connected is 800 W and the maximum number of points, which can be wired is 10.
- In one power sub-circuit, the maximum load that can be normally connected is 3000 W and the number of socket outlets, which can be provided is 2.
Determination of Ratings of Main Switch And Distribution Board
- The current rating of the main switch is decided as per the total current of the circuit to be controlled by it.
- The number of ways and current rating of the distribution board is decided as per the number of sub-circuits to be connected to it and the current of the sub-circuit having the highest current rating
∴ For determination of a load of an installation, if not specified, the rating assumed for the power socket outlet is 1000 W.
