QUE-ANS: 10-30 words

[1]        What extra factors are considered with high voltage systems?

Extra factors to be considered with high voltage systems are the methods of earthing.

  30-60 words

[1]        Why are high voltage systems more dangerous than low/medium systems?

High voltage systems are more dangerous than low / medium because some high voltage systems are able to retain a lethal charge even when switched off. In addition, dangerous potentials can exist some distance between / from live high voltage conductors