Answer / 123

total load ,voltage drop,lenth

Answer / lethium

check the supplier's catlogue :P

Answer / m l sharma

When we calculate the cable size by Amp then we consider the type of load (inductive,resistive, capacitive)& voltage drop.

Answer / ayman

by knowing the load current and voltage and the length

Answer / pk

It depends on the length from source to load, maximum permissible loss and thermal capacity of insulation.

Resistance = Rho x Length / Cross Sectional Area

Voltage Drop = Current in the wire x Resistance

The resistance of the wire leads to voltage drop
Depending on how much voltage drop is permissible at the load the area should be chosen appropriately

The second factor is heat produced.
Energy Loss = heat produced = I^2 x R.
This will lead to a temperature increase. The insulation should be able to handle this rise. Also the losses should be as low as possible to improve efficiency.

This is the theory. Thumb rules of 3-5 Amperes per sqmm are prevalent in the industry

Answer / ravinder paul

what is the size of 7/14,7/16,37/16 cables in mm

Answer / farhat ali

cable length is 6 Meters load is 152 Amp. 3 phase 110 v.
what size cable is used for that

Answer / s.karthi

1 sqmm cable carried 12 amps

Answer / suthan prabhu

for copper cable 1Sqmm can carry 1.92 Amps .

i have 2 motor of same rating. on no load condition one motor take 1.6A but other motor is taking 4.8A. what is the reason of this. please explain with proof.

8 Answers   Ambuja, UltraTech,

How we calculat the NGR of 3phase Generator, Our generation voltage 11KV

0 Answers   MSP, Toyo Denki,

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0 Answers  

low voltage grounding is done by?? 1)solidly gnd 2)ressistance 3)reactance

1 Answers  

for a 500 KVA connected load, I calculated 30% of capactor for power correction. Even after using 225 KVR capactor PF is not improving. What could be reason for low Phase correction factor?

0 Answers   Power World,

what is the formula to calculate the distance between one phase to another phase in single phase line and 3 phase line for different volt for example ; 33kv, 11kv ,22kv,230v

1 Answers   Suzlon,

what is the difference between 230v and 115v?

1 Answers   Bhushan Power Steel,

If i want to build 230kv substation what are the equipments to be installed?

7 Answers  

what is vA rating and class of a ct.

0 Answers   L&T,

When alarm is activated in buccholz relay in transformer

1 Answers  

how does high earth to neutral voltage affects electronic circuit?

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hi sir i have load of 17.5kw in 3 phase lighting circuit which mcb i can use

3 Answers