Bunging up a hole!

[Hobden]

This gets debated at length on electricians boards. If you put each circuit onto its own RCBO then potentially something can be tripped for a long time before you notice and by then the smoke alarms are dead and the freezer has defrosted...

Some electricians don't like RCBO's as they are nearly always single pole devices (us being cheapskates in the UK again) so don't disconnect the neutral. I believe an all RCBO set up is also frowned upon for TT installs (where you have an earth spike in the garden rather than an earth from the supply network) for the same reason.

Noted, thanks. Our earth goes back to the supply network (PME I think), so at least we're OK on that point. What's the problem when using RCBOs with TT earthing?

 

[fernicarry]

What's the problem when using RCBOs with TT earthing?

Not really that familiar with TT, we also have a supply earth, just seems to come up a lot when I read through forums. Solution seems to be use a time-delay double pole RCD as the main switch. These are around the 80 quid mark though so you can see how they might get left out in favour of a 5 quid bog standard main switch...

Period property often implies rural and rural often implies TT supply so thought it worth mentioning in this forum.