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Question

A technician needs to connect a new appliance in a domestic circuit to ensure it receives full voltage and can be operated independently. What should the technician do?

The correct answer is
Connect the appliance in parallel with existing appliances

Connecting Appliance for Full Voltage and Independence

To ensure a new appliance receives the full voltage and operates independently within a domestic circuit, the correct connection method is crucial.

Parallel Connection Explained

  • Connecting an appliance in parallel means it is connected across the main power lines (Live and Neutral) independently of other appliances.
  • In a parallel circuit, each appliance receives the full mains voltage (e.g., 230V).
  • If one appliance in a parallel setup malfunctions or is switched off, it does not affect the operation of other appliances connected in parallel.

Series Connection Issues

  • Connecting appliances in series would cause the voltage to be divided among them. The new appliance would not receive the full voltage.
  • Furthermore, in a series circuit, if one appliance fails or is disconnected, the entire circuit is broken, and all appliances stop working, failing the independent operation requirement.

Why Other Options Are Incorrect

  • Connecting only to the neutral or earth wire does not complete a functional circuit for the appliance to operate and is unsafe. A complete circuit requires connection to both the Live and Neutral wires. The earth wire is for safety only.

Conclusion

Therefore, the technician should connect the appliance in parallel with existing appliances to meet the requirements of receiving full voltage and ensuring independent operation.

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Important Questions from Electrical Wiring

  1. The wire of 2 SWG is equivalent to diameter of-

  2. In our home, the electrical appliances are connected_____________.

  3. An Earth Leakage Circuit Breaker (ELCB) is a crucial safety device in electrical systems. Which of the following scenarios does an ELCB specifically detect to prevent electric shock and potential fire hazards?
  4. Which of the following metals is used to make electrical wires?

  5. In household electricity supply, which of the following statements correctly describes the colour codes of the wires?
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