Mains supply cord - checklist for consumers

This advice is designed to provide basic guidance to consumers. It is not a complete or authoritative statement of the law.


There is an increase in the number of non-compliant mains supply cords on sale. These are normally connected to a transformer which is then used to power/charge a laptop or other portable electrical device. Often the supply cords fail due to inadequate mechanical and electrical strength, exposing live parts.

You can look to see whether the plug, lead, fuse or connector complies with the relevant safety regulations.

  • Electrical Equipment (Safety) Regulations 1994
  • Plugs and Sockets etc (Safety) Regulations 1994

Whilst these checks are not definitive and relate to technical breaches of the Regulations, they are nevertheless a good indication of likely non-compliances with the safety regulations.

If you have purchased a mains supply cord cable which does not comply with the checklist above you should contact us.

Mains supply cord safety checklist



The plug on the left is non-compliant because the earth pin is sheathed, and the plug is not marked with a notified body approval mark.

Plug with faulty cable

A faulty supply cable.

Plug fuses

The fuse on the left is non-compliant because it does not carry the makers identity or the British Standard number. In addition the end caps were not securely fixed.