WE HAVE A LOAD OF 55KW MOTOR ITS VOLTS 380 3PH AND ITS
TAKING 100AMPS (ITS FULL LOAD IS 105AMPS)AND ITS CABLE IS
4CX50SQMM ,NOW ITS GETTING ABNORMAL HEATUP IN CABLE,PLZ
TELL WHY ITS HEAT-UP?(CABLE LENGTH IS 15 METERS ONLY)
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Answer Posted / k.prakashchandra
Normally 70 sq mm Al cable or 50 sq mm copper cable is used
for 100 A current.As the length is only 15 m it may not
matter.If ,only the cable ends are getting heated
,connections may be checked.If entire length is getting
heated, voltage drop across the cables is to be measured.If
it is more than 2 % ,the cables have to be replaced for poor
quality of conductor material and insufficient sectional
area due to it.
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