- Frayed wires – can cause electrocution
- Long wires – can heat up and cause a fire; because they have a lot of resistance
- Damaged plugs – some safety features like fuses may not work or the plug may cause electrocution
- Water around sockets – can conduct electricity and cause electrocution
- Pushing metal objects into sockets – can conduct electricity and cause electrocution
- Overloading sockets – can overheat and cause fire