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Anonymous Poster

Cable size for carring DC current of 65 Amp

10/17/2008 2:58 AM

Please help - I wanted to carry 65 amp DC current from Power room (SMPS of 300amp connected to 600AH battery bank) . i wanted to carry the current upto equipment room which is 80 mtr away form power room and the temp. is 32deg. Battery bank operating voltage is 53V DC.
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PWSlack
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#1

Re: Cable size for carring DC current of 65 Amp

10/17/2008 3:01 AM

British Standard 7671.

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Bill
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#2

Re: Cable size for carring DC current of 65 Amp

10/17/2008 10:09 AM

You don't mention the allowable voltage drop at the load, so the question can't be answered explicitly.

For a 10% voltage drop, the copper conductor size should be about 2.5 mm or 0.1"

For a 5% voltage drop, the copper conductor size should be about 4 mm or 0.16"

and so on and so forth . . .

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