An extension lead (also called an extension cable or extension cord) is a length of power cable with one or more sockets at one end and a plug at the other end. Electrical extension leads allow you to use appliances at a greater distance from the mains power socket than the integrated cable within the device. They effectively extend the length of the power cable. Extension leads can have numerous sockets and are able to power multiple devices from just one mains socket.
What type of extension leads are there?
Extension leads must not be plugged into one another or used in series. This can cause the socket to overload.
Don't overload sockets by plugging in appliances that exceed the maximum current rating.
If extension lead cables are in areas where they could be a hazard, you should fix the cable down or cover it with a protective rubber strip.
When using cable reels, you must unwind the full length of the cable to prevent overheating.
IP Rating: An IP (Ingress Protection) rating defines how effective an electrical enclosure seals against foreign bodies.
Surge protection: Surge protection functionality protects the unit and attached appliances from voltage spikes.
Switched Sockets: Some models come with option to turn individual sockets on and off.