http://www.voltimum.co.uk/news/1962...m=email&utm_campaign=2013_04_15_VLT_VoltiTECH
Apart from the idea that there are ends to a ring (?), surely the first test of the circuits themselves is dead continuity. So at the MCB there would be continuity through the two legs and nothing between either of those and any other circuit.
Circuits can be accidentally connected but this would show immediately in a normal house.
The danger of cross connection which is hard to detect is where there are two separate sources of power feeding one piece of equipment and one is isolated by a simple switch (e.g.PIR).
Have I missed something?
Apart from the idea that there are ends to a ring (?), surely the first test of the circuits themselves is dead continuity. So at the MCB there would be continuity through the two legs and nothing between either of those and any other circuit.
Circuits can be accidentally connected but this would show immediately in a normal house.
The danger of cross connection which is hard to detect is where there are two separate sources of power feeding one piece of equipment and one is isolated by a simple switch (e.g.PIR).
Have I missed something?