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gangireddy
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Engineering Fields - Power Engineering - New Member

Join Date: Jun 2009
Location: hydrabad
Posts: 8

Cable Sizing

06/12/2009 10:18 AM

hai friends how to calculate the cable sizing?

for example one 120 hp motor. the distance from panel to motor is 50mtrs the cable run in air how much the size of aluminium or copper cable i can use for that motor.

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wareagle
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United States - Member - New Member

Join Date: Jun 2008
Location: Alabama
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#1

Re: cable sizing

06/12/2009 11:53 AM

On the right side of the screen you will find "Search this Forum". Enter cable sizing.
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Simon Wan
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Join Date: Apr 2007
Posts: 577
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#2

Re: Cable Sizing

06/12/2009 9:33 PM

Calculate your motor rated current. Then check into the Cable data's books and search for the Current Rating for LV Voltage Copper Armoured XLPE cable or Aluminum Armoured XLPE cable table.

You have to decide what type of cable to used either a single core cable or a 3 core cable. Look at the table and find your motor current there and on the left column you will find the cable size. You got to consider your motor starting current, your faults level, your voltage drop and the "Correction Factors for Various Basic Ambient Temperature"

Finally. It is better to get some expert to do it for you.

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wareagle
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#3
In reply to #2

Re: Cable Sizing

06/13/2009 12:27 PM

gangireddy

Thanks for joining the forum. What is you background? What is the area of your experience?
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gangireddy
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Engineering Fields - Power Engineering - New Member

Join Date: Jun 2009
Location: hydrabad
Posts: 8
#6
In reply to #3

Re: Cable Sizing

06/24/2009 11:55 PM

I WORKING AS A ELECTRICAL ENGINEER IN INDIA IN IRRIGATION PROJECT

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Anonymous Poster
#4

Re: Cable Sizing

06/14/2009 12:37 PM

what is the magnitude of line voltage
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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
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#5

Re: Cable Sizing

06/15/2009 3:38 AM

Is there an Indian Standard equivalent to British Standard 7671?

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Users who posted comments:

Anonymous Poster (1); gangireddy (1); PWSlack (1); Simon Wan (1); wareagle (2)

Previous in Forum: Air Conditioner Voltage Drop   Next in Forum: Testing a LM317T Voltage Regulator
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