Unscrew the new plug and remove the cover. The layout below is the layout of a UK plug. The
fuse is on the right hand side and sometimes depending on the make of plug is best removed
to allow access to the terminal.
The terminal on the bottom right next to the fuse should be
connected to the Live (Brown) cable. The left hand terminal should be connected to the
Neutral (Blue) cable. Finally the top terminal should be connected to the Earth (Green and
yellow) cable.
A simple way to remember the correct positions of the wires is:
BL - Bottom Left - BLue
BR - Bottom Right - BRown
After connecting the wires, the appropriate fuse should be replaced (See
Choosing the correct plug fuse) and finally the flex cable
should be clamped in place using the cable grip at the bottom of the plug.
The cable grip is sometimes a screw down clamp and in other cases the plug has two
flanges which the cable should be pushed into to make it secure. It is very important that the
cable flex is secured in this way to make the plug safe.
The device to which you are fitting a plug to, usually has an Earth wire (Green and Yellow).
However some devices are double insulated which means they do not require an earth wire.
Such devices are marked with 
.
Most modern new appliances now come with a moulded plug, this can not be opened. If you need
to replace the fuse in a plug of this type, the fuse cartridge in the centre of
the pins of the plug can be levered out with a small screwdriver. A fuse of the same
rating should be used to replace the blown fuse. It is importantto ascertain why the device
blew a fuse in the first place.
), this
is the current standard and has been so for many years.
However the previous standard is sometimes encountered and this is Black for Neutral (N),
Red for Live (L), and Green for Earth (E or 
