Do not meddle in the affairs of live wires, for they are subtle and quick to strike you. Instead, get an RCD. With buying and installing a residual current device (or RCD) in your house or apartment, you can p rotect and save yours and your family's lives from an electric shock or any type of electrical damage. A faulty or a live wire in your home can prove to be your demise if you are not careful when working and accidentally cut through or touch one.