A room is to be wired with a single phase ac supply directly taken from the mains which has a declared voltage of 200V. The length of the wire from main switch to light and plug point is 30m. If the wire is to carry 5A, conclude the size of the conductor. (Use the table given below for reference.)
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Explanation:
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Answer:
the size of conductor is 2.5 sq.mm(1/1.80) is suitable
Explanation:
The Permissible voltage drop = 200 × (2÷ 100) +1
= 5 V
- Referringe the table 13.1 minimum size of wire is 1.5 sq.mm (1 / 1.40) should be in poisition to carry 5 amp. safely
- Now it will be seen that there will be a drop of 1 V after energy of 2.3 meters for 10 Amp loading.
Voltage drop at 10 amp = (30÷ 2.3)
vtg drop at 5 amp. = (30÷2.3) × ( 5÷10)
= 6.52 V
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