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3r x 300sq.mm Al. ar

UG cable

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Wiring is sized by the amperage that is used by the load. The formula for amps is I = W/E. Amps = Watts (or VA)/Volts. As you can see an answer can not be given unless a voltage is stated. The lower the primary voltage the larger the amperage will be and likewise the larger the wire size will be.

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A transformer with a primary of 1200 turns and a secondary of 400 turns has what ratio?

A transformer primary of 1200 turns with a secondary of 400 turns is a ratio of 3 to 1.


For 100kw which cable size is good and how to find out cable size?

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.


Why differential relay is not used for 11kv transformers?

It depends what you mean by an '11-kV transformer'; do you mean a primary transformer (33/11-kV transformer) or a distribution transformer (11-kV/400-230-V transformer). Differential protection IS offered on primary transformers.


What is the cable size for 7.5 kw 3 phase motor?

Assuming it is a 400 V three-phase motor, the phase current is 11 amps, or more if the power factor is less than 1.0 (or the supply voltage is different). If it is a 400 V motor the cable should be capable of carrying 16 amps, so a 2.5 mm-sq 4-core cable is needed.


How do i convert from 380 volts to 220 volts?

If these are the exact voltages that you need you will need an auto transformer to obtain these voltages. If these voltages are nominal voltages and are of a three phase four wire configuration, the 220 voltage can be obtained from the three phase legs to the neutral (ground) connection. The equation to use is 400/1.73 = 231 volts.

Related Questions

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A 250 kcmil copper feeder cable would be appropriate for a 300 amp circuit breaker when stepping up from 220V to 380V. It is always recommended to consult with a qualified electrician or engineer to ensure the correct cable size for your specific application and wiring conditions.


What is the cable size required for a 400 amp and 350 amp load?

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The recommended room size for a 9000 BTU air conditioner is around 350 to 400 square feet.


A transformer with a primary of 1200 turns and a secondary of 400 turns has what ratio?

A transformer primary of 1200 turns with a secondary of 400 turns is a ratio of 3 to 1.


What size of armoured cable to run 400 m to carry 5kw?

This is a voltage drop question. To answer is question the voltage must be stated.


For 100kw which cable size is good and how to find out cable size?

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.


The insulation resistance of a transformer winding can be easily measured with?

It depends on the rated voltage of the transformer winding -are you talking about a 12-V transformer winding or a 400-kV transformer winding? Obviously, there is no one answer to your question!


What has a maximum speed of 400 Mbps?

A Fire Wire 400 cable.


Why differential relay is not used for 11kv transformers?

It depends what you mean by an '11-kV transformer'; do you mean a primary transformer (33/11-kV transformer) or a distribution transformer (11-kV/400-230-V transformer). Differential protection IS offered on primary transformers.


What is the recommended temperature for baking bacon at 400 degrees Fahrenheit?

The recommended temperature for baking bacon is 400 degrees Fahrenheit.


What is the recommended temperature for cooking bacon in the oven at 400 degrees Fahrenheit?

The recommended temperature for cooking bacon in the oven is 400 degrees Fahrenheit.


Where is throttle cable in Lexus sc 400?

The throttle cable is located on top of the throttle body.