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It is a test button to confirm the operation of the earth leakage… “Duhuh (or something that sounds like that)” he says…I can see that…it is written on the unit…I ask what does it do. Does it push a lever inside and trip the unit mechanically or does it test it electrically as well…what does it […]

When we have an electrical storm the earth leakage trips and in my assessments it always does when some serious lightning energy is behind it.