1. Dead
  2. Line to line and ground
  3. Line to line
  4. Line to ground
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1 Answers

Option 1 : Dead

The dead short circuit is the most dangerous of all short circuits.

This is because:

  • A dead short is an electrical circuit that results in current flowing along an unintended path with no resistance or impedance. 
  • This results in an excessive current flowing through the circuit, which can damage equipment or cause electrical shocks to those nearby.
  • A dead short is difficult to track and diagnose as the current builds rapidly and trips the breaker immediately.
  • It is mainly caused due to direct connection between positive and negative power wires or a direct connection between the positive wire and the ground.

Ground fault:

  • The ground fault occurs in the power system when the hot wire (live wire) is accidentally connected with the earth wire or grounded equipment frame.
  • In this condition, the frame of equipment energies with dangerous voltage.
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