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The NEC has a table that shows what size cable to use with each amperage and where it can be used.

Q: How calculate the cable size when give current?

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Cable size is determined by current. You did not provide the current, nor did you include the voltage so that we could calculate the current. Please restate the question, and include either the current or the voltage.

100 kw is the power drawn by the load. to calculate the cable size you need to know the voltage. From that you can calculate the current. this decides the cable size. for example if the voltage is 400Volts then the current flowing in the circuit when the load is 100 KW will be 250 amps. (100,000/400). for 250 amps to flow with out causing excessive heating of the cable the cross sectional area of the copper cable should be 150 sq mm.for a round cross section the diameter will be roughly 15mm.

4cx95mm aws which size of cable gland

To calculate the cable size for a 30-meter run, you need to consider the current rating of the circuit, voltage drop limits, and the type of cable insulation. Use a cable sizing calculator or consult a professional electrician to determine the appropriate cable size to ensure safety and efficiency of the electrical installation.

To answer this question the size of the cable or the amperage of the load is needed to calculate the correct wire size and connectors to fit the cable.

The current-carrying capacity of a cable depends on a number of things in addition to its cross-sectional area; these include the type of conductor, number of cores, type of insulation, whether or not it is armoured, method of installation, etc. Accordingly, to determine its current-carrying capacity, you will need to refer to your national electrical code. For example, in the UK, BS 7671:2008 Requirements for Electrical Installations contains tables for all standard cable types, specifying current-carrying capacity, voltage drops, etc.

just apply the formula :-p=v*i*cos(angle);now you have the power rating,load so in turn power factor so you can easily calculate the value of current.with the help of current you can chose the cable available in the market either the aluminum or copper wiresatendra.svnit@gmail.com

25mm cable

take the full load current 1.732*415*I*0.85*efficiency=115*1000 => I? Depending on the value of the full load current and designed and ambient temperatures of the selected category of the cables, and voltage drop per unit length, you can determine the cable size

How to calculate a cable size of 3kw motor

Yes I could. How?

You need to know the amperage requirement of the pump and then you can calculate the wire size.