Answer / er. ankush miglani 9718151073

IF WE CONNECT THE +VE POLARITY TO THE EARTH AND -VE TO THE
EQUIPMENT THE VOLTGE IS CALLED -VE DC VOLTAGE.
THE POSITIVE POLARITY ACQUIERS THE CORROSION VERY QUICKLY
AND TO MAINTAIN THE VOTAGE OF THE DEVICE UNDER
SPECIFICATIONS IT IS DONE.

Answer / sadat khan

we use -48voltd.c instead 0f +48voltd.c because all
problems like fluctuvation,surges all occur in possitive
wire not in negative wire.

In LT cables 3.5 core cable are available that means 3 core and .5 for neutral Why .5 for neutral and is there any reason for that please suggest thanks and regards pavan kumar

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