Single Phase Electricity Explained - wiring diagram energy meter

The video tutorial explains the process of electricity generation, transmission, and distribution. It covers the role of transformers in adjusting voltage levels for efficient transmission and local distribution. The tutorial also details the components and functions of electricity meters, consumer units, RCDs, and MCBs, emphasizing their importance in electrical safety. Additionally, it highlights the significance of earthing in preventing electrical hazards.

Why is alternating current (AC) preferred over direct current (DC) for electricity distribution?

• AC is safer than DC.

• AC is more efficient and convenient for long-distance transmission.

• AC requires less maintenance.

• AC is easier to generate.

What is the purpose of a step-down transformer in the local distribution of electricity?

• To convert AC to DC.

• To reduce the voltage for safe local distribution.

• To measure the electricity consumption.

• To increase the voltage for long-distance transmission.

What is the role of the main fuse in a property's electrical system?

• To measure the electricity usage.

• To convert AC to DC.

• To protect the property by limiting the current flow.

• To increase the voltage entering the property.

How does an RCD protect against electrical faults?

• By increasing the voltage.

• By measuring electricity consumption.

• By monitoring and cutting power if phase and neutral currents are unequal.

• By converting AC to DC.

What is the function of an MCB in a consumer unit?

• To measure electricity consumption.

• To increase the voltage.

• To convert AC to DC.

• To protect circuits from overload and short circuits.

What is the purpose of earth cables in an electrical system?

• To measure electricity consumption.

• To provide a safe path for fault currents.

• To convert AC to DC.

• To increase the voltage.

How can the main protective earthing terminal be connected to the ground?

• By using the metal sheath of the service cable.

• By connecting to the phase wire.

• By connecting to the electricity meter.

• By using a digital smart meter.