Wylex 6A plugin MCB

[Abacus614]

Evening all. My neighbour just got me out the shower as he has no lighting. He's got an old wylex consumer unit with retro fit MCB, the one with the red button to trip.

Anyway after removing the cover found nothing between L-N and L-CPC out going on both lighting circuits, but power on the busbar. Now I'd have to conclude both mcbs were knackered, but any ideas why both would go at the same time?

 

[Lucien Nunes]

Did you check the MCBs for continuity between the pins when supposedly reset?

 

[Abacus614]

Did you check the MCBs for continuity between the pins when supposedly reset?

Yeah and nothing. It just seemed odd to me I had 2 that were faulty. Hence the post really. I'll look into it a bit further should all else fail.

 

[brianmoooore]

They sometimes don’t reset, take then out and bang them on a flat surface (very technical)

THIS! Like RCDs that haven't been tested for years, they trip when they should, but fail to reset.

 

[Abacus614]

Just swapped them out for some replacements and so far so good. Thanks for all the replies guys.