MY RCD switch is permanently tripped, but everything in the house is still working. How can this be?

Bill M, October 2008

quite possibly someone has bypassed the rcd making it in operative the old style fuseboards would only be protecting power circuits therfore the other circuits not controlled by it would work. Another reason might be that none of the circuits are wired or protected by the rcd so whether it was on or off would not affect the circuits.

Tony, October 2008

The RCD is supplying something outside the house perhaps?

Peccavi, October 2008