Ensuring the safety of your home and family starts with understanding your electrical system — and in Ireland, one of the most important electrical safety devices is the Residual Current Device (RCD) . Whether you’re renovating, installing new circuits, or simply reviewing your home’s electrical safety, knowing how RCD protection works can safeguard your household from shock, fire risk, and electrical faults. In this guide, we explain what an RCD is, how it protects your ho