Plug the adaptor into a 13A socket and then plug your appliance or extension lead into the adaptor.
Gives added protection against the risk of electrocution.
Particularly suitable for hedge trimmers, lawnmowers and other outdoor power tools.
Design of adaptor may vary from picture, but will still be good quality.
An RCCB (residual current circuit breaker), sometimes called RCD (residual current device), is an electrical wiring device that disconnects a circuit whenever it detects that the electric current is not balanced between the energized conductor and the return neutral conductor. Such an imbalance may indicate current leakage through the body of a person who is grounded and accidentally touching the energized part of the circuit. A lethal shock can result from these conditions. RCCBs are designed to disconnect quickly enough to prevent injury caused by such shocks. They are not intended to provide protection against overcurrent (overload) or short-circuit conditions.