An ocean current is a continuous, directed movement of seawater generated by forces acting upon this mean flow, such as breaking waves, wind, the Coriolis effect, cabbeling, temperature and salinity differences, while tides are caused by the gravitational pull of the Sun and Moon.
RDDs - Radar Detector Detectors, All Acronyms, viewed April 15, 2017, <https://www.allacronyms.com/RDDS/Radar_Detector_Detectors>.
RCDs 1 1. What is an RCD and what does it do? An RCD is defined, in BS 7671, as: âA mechanical switching device orassociation of devices intended to causethe opening of the contacts when theresidual current attains a given valueunder specified conditionsâ.. Types of RCDs. RCD is the generic term for a device. that operates when the residual. current in the circuit reaches a. predetermined value. The list above indicates the different. types of RCD available, a description of. each device and examples of how the. device is used.