This web page gives advice on power cables
- Purpose of a power cable
- Care of power cables
- Symptoms of faulty power cables
Purpose Of A Power Cable
The purpose of an electrical power cable is to connect the electrical supply from the electrical outlet to an electrical appliance.
Care Of Power Cables
Care of power cables:
- Use cable clips to keep cable ‘runs’ up against walls or furniture.
- Less chance of damage when near to walls and furniture, for instance less chance of being stood on or being pulled out of an appliance.
- Less chance of wires being pulled loose.
- Reduces the trip hazard.
- Mop up spills in workshops.
- Some chemicals can damage the insulation of power cables.
- Keep cables away from hot appliances, for instance kettles or water boilers.
- Heat can melt the insulation of power cables.
- Visually check cables for damage on a regular basis.
- Check for signs of damage to insulation, for instance insulation melted or small cuts in the insulation.
- Visual checks – about once a year in an office, about once a month in a workshop, before use in high risk areas.
- Replace damaged cables.
- Keep spares so people can easily change cables – costs are low, risks are high.
- Commercial premises – do PAT testing.
- Power cables are checked during PAT testing.
- Landlords – check power cables as part of the annual visual inspection.
Symptoms Of Faulty Power Cables.
Have you recently moved the electrical appliance? Is the power cable loose?
Always check that the power cable is secure (‘pushed in’) at both the electrical appliance and wall socket. Loose power cables can cause many different problems.
- The electrical appliance does not work.
- If the power cable is broken, or loose, the electrical appliance will not work.
- Power cable hot.
- Many power cable problems show up as hot power cables.
- The electrical appliance turns itself off.
- Some electrical appliances have circuits that turn the electrical appliance off when power cables are faulty.
- Loose power cable – push back in.
- Funny smell.
- Melting insulation has a distinct smell.
- Inspect the power cable for melting insulation.
- RCD tripping.
- Faulty power cables can cause an RCD to trip.
- Investigate A Constantly Tripping RCD
- How To Reset An RCD
- Battery charging system or battery charger not working or not working correctly.
- A faulty power cable can stop an battery charging system working to full efficiency.
- The faulty power cable does not allow enough current to flow.
- Can cause problems with laptops and games consoles.
- Slight movement of power cable causes electrical appliance to power down:
- Probably a loose wire (bad connection) at one end of the power cable.
- If replacing the power cable does not fix the problem probably a loose connection in the plug on the electrical appliance or wall socket.
- PC monitor turns off (goes black):
- Plug on back of PC monitor ‘coming out’ (loose) – push plug into the socket on the back of the PC monitor.
- Power Cables Electrician Altrincham
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