Electrical safety training - areas to cover

Electrical safety training - areas to cover

Electrical safety training

Two levels – general and specialist. Areas to cover and what should be in them:

  1. Hazards of electricity
    1. Direct Shock – burns, cessation of breathing, unconsciousness, ventricular fibrillation, cardiac arrest, death.
      1. The presence of water significantly increases shock hazard
    2. Device Overheating – fires: blocking air vents or covering devices reduces cooling and causes overheating; placing devices with air vents on soft surfaces not only blocks the vents but increases the amount of dust sucked in further increasing overheating.

  2. Mains supply and earthing
    1. Voltage = potential difference, as long as the voltage is correct an appliance will operate correctly
    2. Earth or Ground – the potential of the ground between our feet
    3. Types of plugs, single phase, 3 phase, international adaptors
    4. Special cases

  3. Equipment classes
    1. Class 0
    2. Class I
    3. Class II
    4. Class III

  4. Appliance connectors
    1. Only used for <=15A @ 230V AC, above 15A must be hardwired at appliance end
    2. Used for class I & class II, # of pins/contacts at wall end must equal # of sockets at appliance end

  5. Using appliances safely
    1. Check all leads – right type both ends, good condition
    2. Make sure power leads cannot be damaged (e.g. by being run across on the floor where they can be run over by things)
    3. Make sure the appliance is secure on a solid flat surface
    4. Make sure the appliance is not covered by anything which could inhibit cooling.
    5. Use as directed by the manufacturer (e.g. temperature in cars!)

  6. Safety management
    1. Faulty earth – tag testing
    2. Overheating – making sure appliance can cool themselves
    3. Fiddling around with them – don't try and remove your toast with a knife!
    4. Water & electricity don't mix!
    5. Safety shut offs
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