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i want to calculate cable sizing and other protoction for 10 kw motor how can i calculate ?i need a detail of calculation?
i try to wirte a programm for this calculation please help me to find appropriate
refrence.
 

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I pretwist and then use wire nuts. Solder pots rule.
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Do you wanna wirte something for a sin-trif-agal?
 

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i want to calculate cable sizing and other protoction for 10 kw motor how can i calculate ?i need a detail of calculation?
i try to wirte a programm for this calculation please help me to find appropriate
refrence.
This sort of thing is typically determined by local code requirements, not programs. We cannot help you with that.
 

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i want to know how can i calculate cable sizing-select fuse- with diret conenction and star -deta connection and everything about motorize branche
Right.

As I said, this is not something that is calculated, it is something that is regulated.

This forum is based in the USA. 99.9% of our members are NOT identified as being in Iran (surprisingly, 40 members are! But they don't log on very often).

We (the 99.9%) do not know what your local codes require for wire sizing and protective devices. We also do not deal with metric wire gauges so ampacity of said wire is a completely foreign concept to us, even if we were to take a stab at "calculating" wire sizing.

I can tell you however that the DIFFERENCE in wire size for motor leads going from a DOL starter vs a Star-Delta starter to the motor are that the SD wires can be 58% of the ampacity of the DOL wires, whatever that may be. But then again you need 6 cables instead of 3, so you are actually behind the cost point if that is what your concern is.
 
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