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 .

why we use delta connection in transformer

2 Answers   UPPCL,

if we use contactor & MCCB both in a feeder.in this feeder rating of contactor is higher or lower or same of MCCB rating & why?

1 Answers  

what are the safety measures of induction motor?

0 Answers  

what are the reasons of low voltage during start the DG?

1 Answers   Godrej, Tata Power,

I AM DOIN MY 3RD YEAR IN ELECTRICAL ELECTRONICS. PLEASE SUGGEST WHAT DO I DO NEXT AFTER MY B.E? AND I WANT TO GET INTO ANY PSU IS DER ANY EXAMS PLASE SUGGEST EVEN THAT.

3 Answers  

What is the maxvoltage drop allowed at any healthy joint at full load ?

1 Answers   Kirloskar, Seyadu,

why generation of electricity in low value voltage

3 Answers  

how do we calculate length of starting time and repeated starting of a direct online starter?

0 Answers  

What is the capacitance values of 132,220,400 & 765 kV current transformer

0 Answers  

what is the practical application of full adder circuit?

0 Answers   College School Exams Tests,

Wat is the best to use in a generator a 6.5kva or a 7 kw

4 Answers  

why we measure ouput of transformers in kva.

1 Answers