Answer Posted / ankit jain

In general we only use two words ie. LT & HT cable.
LT = below 500V
HT=Above 500V

But as per IS standard:
there are following voltage grades.

below 1000 V = LV
1100 V < MV < 36 KV
66 KV < HV < 150 KV
150 KV < EHV < 525 KV

We generally use PVC insulation for LV And MV cables. But it
is not compulsary to use PVC Cables as now XLPE cables are
more preffered because of certain advantages over PVC
Insulation.

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