We have had the discussion about RCD testing that is out of range on our testers on the old forum, I have also spoken to RCD manufacturers and test equipment manufacturers, in particular about testing 100 mA S-type time delayed RCDs installed in TT installations.
The general consensus is that if such an RCD is within specification when tested at its rated current it will be okay when whacked with a bigger current.
Testing a 100 mA RCD at five times its rated current is generally considered to be potentially dangerous in a domestic or similar installation as you are shoving a half an ampere of current through the earthing system with the meter set to deliver 500 milliamperes, a potentially lethal current.
We have had the discussion about RCD testing that is out of range on our testers on the old forum, I have also spoken to RCD manufacturers and test equipment manufacturers, in particular about testing 100 mA S-type time delayed RCDs installed in TT installations.
The general consensus is that if such an RCD is within specification when tested at its rated current it will be okay when whacked with a bigger current.
Testing a 100 mA RCD at five times its rated current is generally considered to be potentially dangerous in a domestic or similar installation as you are shoving a half an ampere of current through the earthing system with the meter set to deliver 500 milliamperes, a potentially lethal current.
