Please follow the link to see how you go about testing an RCD
RCD, RCBO, ELCB is probably the best electrical safety device you can have in your home. These devices save lives. Please ensure you test yours at least every three months.
If you have an electric shower then it is imperative that your shower is protected by either an RCD or RCBO. If you are unsure about what this is, contact us and we will advise you for free.