/Lounge Blogs/Current Flow/Q10. What's the difference between a Residual Current Monitor and a Residual Current Device, and how should they be selected to work together?
11, Jun, 2019
Q10. What's the difference between a Residual Current Monitor and a Residual Current Device, and how should they be selected to work together?Dave Austin and Gary Gundry investigate an exam style question requiring the operating setting adjustments to be found in the Regs when using RCMs and RCDs on the same installation.
Residual Current Monitors have a different function to Residual Current Devices, but sometimes they may be incorporated in the same installation. Dave and Gary look into the adjustments in ratings that must be allowed for when they are used either upstream or downstream of each other.