Our website is undergoing some major changes, please don't be alarmed. If you need an electrician in your local area, please call us

Electrical Safety

Categories: Electrical Contractors , Northampton Electrician

Electrical injuries

Electricity can kill or severely injure people and cause damage to property.

A voltage as low as 50 volts applied between two parts of the human body causes a current to flow that can block the electrical signals between the brain and the muscles:

  • Stopping the heart beating properly
  • Preventing the person from breathing

The risk of injury is generally greater with higher voltages.

Most of the fatal incidents are caused by contact with overhead power lines. Even non-fatal shocks can cause severe and permanent injury. For example,

  • Shocks from faulty equipment may lead to falls from ladders, scaffolds or other work platforms. Those using or working with electricity may not be the only ones at risk.
  • Poor electrical installations and faulty electrical appliances can lead to a fire, which may also cause death or injury to others.
  • Most of these accidents can be avoided by careful planning and straightforward precautions.

The best way of ensuring that your appliances are safe is to have a PAT test carried out on them.

What is a PAT Test?

PAT Testing stands for Portable appliance testing.  It’s the process of checking electrical appliances for safety through a series of visual and electronic tests.

PAT Testing involves the testing of every electrical appliance to establish the safety and suitability. we as PAT Testing electrical experts in Northampton will carry out a visual inspection of the appliance, its plug and lead. For Class I equipment we will also inject signals into the cable and appliance to ensure their integrity.

Electricity is a useful form of energy but it can also be very dangerous. There are lots of ways in which we can be electrocuted including:

  • pushing metal objects into plug sockets
  • long or overheating cables
  • damaged or incorrectly wired plugs
  • touching frayed electrical cables
  • allowing water or wet objects to enter plug sockets or touch frayed cables

What FUSE to use

Manufacturers have now standardised plug fuse ratings to be either 3A or 13A. However, 5 Amp fuses are still used in some older equipment and are available to buy.

Fuses in plugs are made in standard ratings. The most common are 3 A, (5 A – in older equipment) and 13 A. The fuse should be rated at a slightly higher current than the device needs:

  • If the device works at 3 A, use a 5 A fuse ( For some older equipment use a 5A – Otherwise use a 3A is the device for example “2.2679 amps”
  • If the device works at 10 A, use a 13 A fuse

Example the power is 500 watts.

  • Fuse rating = (watts/volts) x 1.25
  • Fuse rating = (500/240) x 1.25
  • Fuse rating = (2.083333333) x 1.25
  • Fuse rating = 2.604166667 amps
  • Next fuse up is a 3 amp fuse, use a 3 amp fuse.

Example the power is 1500 watts.

  • Fuse rating = (watts/volts) x 1.25
  • Fuse rating = (1500/240) x 1.25
  • Fuse rating = (6.25) x 1.25
  • Fuse rating = 7.8136 amps
  • Next fuse up is a 13 amp fuse, use a 13 amp fuse.

a fuse labelling example

Electrical Safety Tips

  • Do not use items with damaged cords so that the wires are exposed. Either repair or replace. Check items regularly.
  • Do not use damaged sockets, replace with care when necessary.
  • Do not use items with damaged cords so that the wires are exposed. Either repair or replace.
  • Do not use in-door electrical equipment outside if it’s raining.
  • Don’t remove a plug from a power point by pulling on the cord; pull the plug instead.

If you require any assistance in anything electrical, please contact me by calling me direct on my mobile phone. Call 07814 881 295


Leave a Reply

Your email address will not be published. Required fields are marked *