1) Accepted dlvy 2) Shipping-department stamp 
Residual Current Device.
Residual Current Device. Part of the motorhome's electrical system which will 'trip' if there is a fault
Residual current device, this is a safety device covering some or all of the circuits in your home, it monitors your system and will disconnect all the circuits it covers if it detects a fault.
Redistribution Control Descriptor
Residual Current Device. A protection device which is actuated by the residual current.
Residual Current Device - affords extra protection against electric shock, now mandatory in some installations, and mandatory for sockets supplying equipment likely to be used outdoors. These devices work by detecting a slight current imbalance between Live and Neutral wires, and trip the circuit breaker, if this is above the trip value - commonly ...