Thursday, October 3, 2013

Load Current of electric cable

Posted by Sikandar khan  |  at  11:29 PM No comments

The values of load current also depend upon the size of cable. Therefore when you installed a wiring always calculate the total load of wiring system. For places, where electrical installation is done; first of all, we know that the all power  in watts. Then we determine the current and adding 20% for future extension.

6 Lamps each 100 watt = 600 watt
4 Tubes each 40 watt = 160 watt
3 Fans each 80 watt = 240 watt
3 Socket outlets each 100 watt = 300 watt
Total load = 1300 watt

Declared supply voltage = 240 v

We know that:
                                                I = p/I = 1300/240 = 5.41 A
Adding 20% for future = 20/100 x(*) 5.41 = 1.08 A
Total load current = 5.41 + 1.08 = 6.49 A
It means that for 1300 watts load, the cable which is used. whose current rating is 6.49 A is 1/0.044 cable is 11 A.

About the Author

Sikandar khan is pro blogger who's write about technology,learn Home wiring. He makes video tutorial in Urdu and Hindi languages

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