Answer / ankamsreekar

we have to use 4 core 2.5sqmm copper it will be economic
design since it can withstand 20a load
or we can use 4core 4sqmm copper

Answer / michael

use 3.5mm^2 size of wire,

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RESPECCTED SIR/MADAM- I AM PRERING FOR SECTION ENGINEER (ELECTRICAL) RRB CHANDIGARH PLEASE SEND ME SOME PREVIOUS YEAR QUESTION PAPER OR MODEL PAPER.MY EXAM IS ON (30- NOVEMBER 2008).I AM VERY THANKFUL TO YOU. FROM- HARENDRA SINGH YADAV

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