UK Plugs Explained: How They Work, Check & Change the Fuse Safely
Understand exactly what every pin & wire does, plus safely inspect or swap a blown fuse—step‑by‑step for UK 3‑pin plugs.
How to take your plug apart
1. Unplug the appliance from the socket.
2. Remove the screw in the centre of the plug.
3. Pull the back of the cover off the plug.
4. The fuse is held in place by a small metal clip
5. Lift out the fuse.
How to take your plug apart
1. Fit a new fuse with the same rating.
2. Make sure it sits firmly in the clip.
3. Put the back cover on and tighten the screw.
4. Make sure the cable grip is holding the outer cable tight(not the wires).
5. Lift out the fuse.
Different cars use different systems, so if you can't find the release or aren't sure how it works, check your vehicle handbook rather than forcing anything.
Always follow these colours. Incorrect wiring can be dangerous and may damage your appliances.