2.3.3 Electrical Safety

• Earthing provides a safe path for fault currents to flow to the ground
• How do fuses protect circuits from excessive current?

  By melting a wire
• Exposure to water is a common household electrical hazard


  True
• Using electrical appliances near water can lead to electric shock
• Regular appliance inspection includes checking for frayed cords and loose connections


  True
• What is the purpose of fuses in electrical safety?

  Protect circuits from excess current
• Fuses protect circuits by automatically switching them off when excessive current is detected

  False
• Circuit breakers automatically switch off the circuit when excessive current is detected
• What is the risk associated with overloading circuits?

  Fire
• Order the following electrical safety precautions in the home:

  1️⃣ Regular appliance inspection

  2️⃣ Using correct plug types

  3️⃣ Avoiding water near electrical appliances

  4️⃣ Turning off devices when not in use

  5️⃣ Proper fuse usage
• Earthing prevents electric shocks by carrying fault currents away
• What type of outlet should be used near water to prevent electric shock?

  GFCI
• Overloading circuits occurs when too many devices are plugged into one outlet
• Using electrical appliances near water can lead to electric shock.
• Incompatible plugs used with outlets can damage appliances and cause electric shock.
• Regular appliance inspection involves checking for damage, frayed cords, and loose connections.
• Avoiding water near electrical appliances reduces the risk of electric shock.
• Following electrical safety precautions reduces the risk of accidents in the home.


  True
• A fuse breaks a circuit by melting a wire, while a circuit breaker switches off automatically.


  True
• Circuit breakers are more expensive than fuses but can be reused after tripping.


  True
• MCBs protect against overloads and short circuits by monitoring current flow.


  True
• RCDs trip when they detect a residual current, indicating a leakage.


  True
• Earthing provides a safe path for fault currents to flow to the ground, preventing electric shocks.


  True
• Frayed or cut insulation in damaged cords can cause a fire or an electric
• Why is it important to use the correct plug for the outlet?

  Avoid electric shock
• Keeping electrical devices away from water sources is a key electrical safety precaution.


  True
• Fuses and circuit breakers protect circuits from excessive current
• How does a fuse break a circuit?

  Melts a wire
• Circuit breakers are more expensive than fuses.

  True
• MCBs are designed to protect against overloads and short circuits
• RCDs may trip due to non-hazardous current leaks.


  True
• Steps to take in case of an electrical incident

  1️⃣ First aid

  2️⃣ Turn off power

  3️⃣ Call emergency services
• Why is it important to avoid water near electrical appliances?

  To prevent electric shock
• Overloading circuits can cause a fire


  True
• Match the electrical hazard with its prevention:

  Overloading circuits ↔️ Use multiple circuits

  Damaged cords ↔️ Replace cords immediately

  Faulty wiring ↔️ Hire a qualified electrician
• Damaged cords with frayed insulation can cause electric shock or fire.


  True
• Faulty wiring in a home can cause both fire and electric shock.


  True
• Preventative measures are crucial to ensure electrical safety in the home.


  True
• Using the correct plug type for an outlet prevents short circuits and fire hazards.


  True
• Proper fuse usage involves selecting the correct amperage for the circuit.