Changed a consumer unit everything fine all test came back hunky dory, but one RCD would not trip on the test button so swapped them around, same...
when i try to test an RBCO at the DB it trips as soon as the test probes touch the terminals, this only seems to happen with Bill/MEM RCBOs, it...
New Wylex dual RCD board
RCD 1 (80A 30mA)
32A Kitchen ring
6A Upstairs lights
Have tried disconnecting all loads and connecting...
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