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How should we calculate conductor rating ?

Electrical Electrical Design
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Question added by Syed Atif Mohiuddin , Electrical Engineer , Quality Electrical Works Pvt Ltd
Date Posted: 2016/05/14
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Abrar Hussain
by Abrar Hussain , Electrical Inspector , Core Engineering Counsultant

Mostly two type of conductor is used

1- Copper

2- Aluminum

both have some resistivity aluminum is 11.2 and  copper 17.4 respectively at 53° C (127° F)

conductor Circular mils =2 x ρ x I x L / (%Allowable Voltage drop of source voltage)  

put all the vales above mention formula and get ur answer

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