Warmup offers a high quality RCD (Residual Current Device) designed to give added protecion against electric shocks & fire hazard by tripping when a leakage to earth is detected. PLEASE NOTE: As with all electrical projects which are subject to Part P Building Regulations, all elecrical work should be carried out by a certified/qualified electrician. All work must conform to BS 7671:2008 & the current IEE Wiring Regulations.