R1+R2 Test on outbuilding

[hutch6447]

Yes that is correct it is a 200mA test (r1+r2) so if it is running through an rcd it will trip it because they are rated at 30mA.

Hi there,

I am just learning and wanted to say that going on the understanding of how RCDs work, it will only trip if the neutral has a difference of more than the rated RCD (ie 30mA in this case) of the supply given to it (in this case 200mA). It shouldn't matter if the system is dead or alive, the fact that you are sending the current is making that circuit 'live' in a way. I guess it would trip if you send a test current of 50mA? Is my understanding correct?