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Answer Posted / puneet kumar
LT means low tension(low voltage) refers to 230v & 440v
which we get just after at secondry of tranfomer placed in
colony(city's)
HT means high tension(high voltage) refers to 11kv & 33kv
which is secondry of city's substation and primary of
colony's placed transformer.
after HT then EHT , UEHT
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