I nearly fell for it . Called to look at a shower not working on way home. Customer says a light bulb blew, lights went off, got her dad round who got the lights on but shower is now dead.
Quick look at the mains cupboard, seperate Wylex 30a HRC sw/fuse for the shower, switched on, neon is not lit on DP switch outside bathroom.
Check the fuse, OK , switch the Wylex off and go to DP switch to remove and check, neon is now on !!
Turns out to be an old Wylex (didn't look it, white one) the switch works the other way to modern ones , up being on, the dad had switched it when looking into the lighting problem, then switched it down thinking ,as I did , that it was back on.
Noticed as I left that the old MCBs in the board were all switched up (on) too .
Never assume things are normal.
Quick look at the mains cupboard, seperate Wylex 30a HRC sw/fuse for the shower, switched on, neon is not lit on DP switch outside bathroom.
Check the fuse, OK , switch the Wylex off and go to DP switch to remove and check, neon is now on !!
Turns out to be an old Wylex (didn't look it, white one) the switch works the other way to modern ones , up being on, the dad had switched it when looking into the lighting problem, then switched it down thinking ,as I did , that it was back on.
Noticed as I left that the old MCBs in the board were all switched up (on) too .
Never assume things are normal.