Circuit Breaker Basics

The video tutorial explains the function and importance of circuit breakers in homes and workplaces. It covers overload and short circuit protection, detailing how circuit breakers prevent electrical hazards. Additionally, it introduces Ground Fault Circuit Interrupters (GFCI) and Residual Current Devices (RCD), which protect against electric shocks by monitoring current flow. The tutorial emphasizes safety and concludes with a summary of the key points discussed.

What is the primary function of a circuit breaker in an electrical circuit?

• To increase the current flow

• To automatically open and break the circuit in case of overload or short circuit

• To provide a constant power supply

• To reduce the voltage in the circuit

How does overload protection in a circuit breaker work?

• By increasing the circuit's resistance

• By cutting power when the load exceeds the breaker's rating

• By reducing the voltage

• By maintaining a constant current flow

What happens when a short circuit occurs in an electrical system?

• The circuit breaker maintains the circuit's resistance

• The circuit breaker reduces the current flow

• The circuit breaker detects a surge in current and cuts the power

• The circuit breaker increases the voltage

What is the purpose of a GFCI or RCD device?

• To reduce the circuit's resistance

• To provide a constant power supply

• To monitor and compare current in supply and return wires, cutting power if there's a discrepancy

• To increase the circuit's voltage

Why is it important for GFCI and RCD devices to act quickly?

• To ensure the circuit remains open

• To prevent electric shocks and ensure safety

• To increase the current flow

• To maintain a constant voltage