Normal
Does it, about 12 years ago I fitted a dual RCD CU all tested and working correctly, 5 months on and while doing some other electrical work I retested one of the RCD's and it didn't trip as expected found it was out of spec when ramp tested only tripping at 37mASo how often would you need to test them to keep them working properly
Does it, about 12 years ago I fitted a dual RCD CU all tested and working correctly, 5 months on and while doing some other electrical work I retested one of the RCD's and it didn't trip as expected found it was out of spec when ramp tested only tripping at 37mA
So how often would you need to test them to keep them working properly
