Safety Tips for Using Electricity

According to the Electricity Ordinance, all electrical work including installation, repair and testing should be carried out by Registered Electrical Worker (REW).

Main Switch

  • Check to see that the main switch is in good condition
  • Label "ON" and "OFF" clearly
  • Be readily accessible in case of emergency
  • Familiarise yourself with the location of the main switch

Residual Current Devices (RCDs)

  • Use RCD to protect yourself from shock. They are especially important in kitchens, bathrooms, and places where water is present
  • Test the RCDs regularly according to the manufacturer's instructions at least every three months

Circuit Breakers/ Fuses

  • Choose correct rating and type of circuit breakers / fuses
  • Label each circuit breaker / fuse to indicate which circuit it protects
  • Replace the blown fuse with a new one of the proper size and rating. Never substitute a fuse with other objects, such as a coin or paper clip
  • Know how to reset circuit breakers, and replace blown fuses properly. Before conducting any replacement, turn off the appliances and lights in use
  • If the appliances are unplugged but the circuit breakers flipped off again, there could be a fault on that circuit. You should seek assistance from a qualified electrician

Socket Outlets

  • Avoid excessive use of extension units or universal adaptors
  • Check for outlets that are loose-fitting or broken
  • Arrange replacement for any broken or missing wall plates
  • Place safety caps in all unused outlets, especially the ones that can be accessed by children


  • Use plugs that comply with local / international statutory safety requirements for use in Hong   
  • Check the plug itself. Look for signs of damage or discolouration on the plug
  • Make sure the power cord is firmly clamped in the plug
  • Don't force a plug into an outlet if it doesn't fit


  • Check if cords are in good condition – no part of the cable is worn, split, cracked or frayed.
     Arrange for replacement if necessary
  • Insert or remove a plug by grapping the plug itself, not the cord
  • Do not run electrical cords underneath carpets, rugs or furniture. Keep them away from hot
     appliances and corrosive materials
  • Cover power cord with rubber protector strip if it has to be laid across a pathway
  • Unplug the appliance from socket outlet before detaching a detachable power cord from the


  • Schedule regular checking for damaged fittings, cables and connections
  • Bulbs should be screwed securely into the fixtures. Loose light bulbs can lead to overheating
  • Don't use bulbs that require higher wattage than the fixture allows
  • Ensure outdoor lighting fittings and luminaires are weatherproof


  • Use appliances that meet local / international safety requirements for use in Hong Kong
  • Check condition of appliances
  • Never cover up ventilation holes or slots on appliances
  • Inspect for damaged wiring, plugs, and connectors
  • Never touch an appliance with wet hand
  • Don’t touch the plugged-in appliance if it drops into water. Turn off power and unplug the
  • Get appliance inspected by qualified electrician if it constantly blows a fuse, flips a circuit or feels
     tingling on contact, or has a burning smell / sizzling sound

Outdoor Use Safety

  • Make sure each electric tool is grounded or certified with double insulation
  • Never use appliances that are not designed for outdoor use
  • Don't use electric-powered appliances or tools outdoor when it is raining, on wet grass or in damp area
  • Use only extension cords marked for suitable outdoor use
  • When using a ladder outside, keep yourself, tools and ladder well away from power lines


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