Why is a ground wire used?

The video tutorial covers the dangers of electricity and the importance of being qualified to handle electrical work. It explains the role of the ground wire in preventing electric shock and describes the normal flow of electricity in a circuit. The tutorial also details what happens during a ground fault and how circuit breakers respond to such faults, ensuring safety by cutting power to affected circuits.

What is the primary purpose of the ground wire in an electrical circuit?

• To increase the voltage in the circuit

• To provide power to appliances

• To reduce the electricity bill

• To act as an emergency path to prevent electric shock

In a normal household circuit, where does the electricity flow after entering through the service panel?

• Directly to the transformer

• Into the ground wire

• Into the hot terminal of the receptacle

• Back to the power station

What happens during a ground fault?

• The voltage in the circuit decreases

• Electricity takes an unexpected path back to the source

• Electricity flows through the intended device

• The circuit breaker automatically resets

How does a circuit breaker respond to a sudden increase in current?

• It cuts the power to the individual circuit

• It increases the current further

• It diverts the current to another circuit

• It reduces the voltage

What must be done after a fault is corrected in an electrical circuit?

• The voltage should be increased

• The ground wire should be removed

• The circuit breaker should be flipped again

• The transformer should be reset