EBME Forums Forums Management Medical Equipment Management Risk assessment of home based devices

In short it sounds like a reasonable additional risk reduction method but using a socket tester as well will spot any other wiring faults.
However, an RCD won’t protect against any over currents if the wiring supply earth is missing. It can be good back to the supply but then it goes nowhere.
The earth is there to blow the thermal trips or fuses.
There are still plenty of homes out there that have no earth system in place or a compliant mains network earth (Terra) provided.
The father in law is 91 and I arranged to have a TNS earth recently provided just so we could bond the gas meter in case the back boiler goes. It needs a full rewire but can’t because it would wreck his decoration so that would mean weeks in a home which he would object to. My point being, you could justify at least an earth to be fitted free by UK energy if it gives a low loop reading or have a rod fitted. Problem is - doing half a job is not ideal and I’m only writing about it to show a full rewire is so disruptive.