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 .

how we calculate full load current of A.C & D.C Motors?

1 Answers  

what is mean by NTPC?,why didn't electric shock in train?

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please let me know , we have installed two separate motor for fire fighting system 1) 60 hp and 2) 15 hp the load is 74 AMPS and 20 AMPS then tell me the main power cable in Aluminum will be what thickness , the length is 225 mt from the main utility to fire pump house

1 Answers  

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tube light how its working.,?

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