Residual Current Device. Protects the user against short circuit (earth faults) and earth leakage caused by damaged cable or faulty equipment. A RCBO is a combined MCB and RCD, protecting against earth leakage/short circuit and overload.

Residual Current Device. A type of fuse which monitors the flow of electrical current through the live and neutral wires of a circuit. When an RCD detects an imbalance caused by earth leakage, it cuts off the supply of electricity as a safety measure.

Residual Current Device. A safety device (a modified circuit breaker), usually installed within a distribution board which monitors the circuit that is is serving. In the event of a earth fault or "earth leakage" contacts will open and the supply will be isolated. Used to enhance protection where the adequacy of the earth return path may be suspect.

Rabbit Calicivirus Disease

Resource Conservation Districts.

Resource Conservation District (many)

Respirable Combustible Dust. A method of measuring ambient DPM exposures using a combustion process. Used in underground mines in Canada.

Rehabilitation Counselor for the Deaf

Resistance Capacitance Diode

RAS-to-CAS delay

Receipted by potential lender

Registered Community Design

Record