Why do circuit breakers go up for on and down for off?

Yes thats a very good idea and response to that sort of problem.

In the end that is all you can do. Ditch the whole premises RCD and individually make rings protected.

I can give you one data point. A mouse tripped my 100mA RCD, but it died in the process.

And when you found one they were playing 'Cherish' by the Association like every other damn station.

when I finally found a station in the middle of Iowa, Kansas, or some other place I'd been happier flying over I thought things were looking up when I heard Muddy Water's 'I'm a Man'. The whole thing only has one riff so it's recognizable.

My hopes were dashed when I heard

'I'm a man I'm a Christian man'

It is mandatory here in hospitals.

And it is to protect other patients from YOU.

When I was about 20 I had a friend who was a nutter on a mountain bike. Going down mountains without applying brakes. He had a new 3 grand bike, I had a fairly new half grand bike. He wasn't happy when his suspension fell in half and mine didn't. Yeah, super lightweight fancy expensive stuff doesn't cut it. I prefer sturdy.

A screw operated by a screwdriver?

It's the colour of your skin at different temperatures. They could have gone by the colour of metal (blue is hotter), but that would be less understood by the masses.

It's really handy so you can stand on the pegs, stick your arms out, and play airplane.

My first Mtn. bike was a high end GT that I bought in the late '80s. As might be expected the components were the latest, greatest. The rear brakes were a Shimano U-brake design that fell out of favor very quickly. It had Biopace chainwheels, sort of an elliptical design that faded just as rapidly. There was a frangible derailleur hanger that was delicate and very unique. The seat tube was an odd diameter.

when someone stole it they were doing me a favor. I replaced it with a plain vanilla bike with suspension forks.

Whole-house RCDs are a right pain. At our previous house we had one spur that ran to an outhouse. If there was a storm, the house RCD would trip if the spur's MCB was turned on, but would not if the spur was turned off. After losing a freezer full of food because the whole house had tripped, we got into the habit of turning off the "outside" MCB whenever we were not using it - and especially if we were going away on holiday.

If each ring main or spur had had a separate RCD, only that circuit would have tripped if there was an apparent earth leakage problem.

But I imagine RCDs are expensive and MCBs are cheap, so circuits are protected only by over-current, and then the whole house is protected by earth-leakage RCD.

Apart from cost, is there any disadvantage in dispensing with over-current MCBs altogether, and protecting each circuit with its own over-current/earth-leakage combined circuit breaker so as to confine the power-loss to the smallest practicable set of appliances?

No metal can stand the temperature needed to go blue (>10,000K).

So why is it sometimes green for cold? My skin is never green, as I don't photosynthesise.

The chrome on my motorbike exhaust tuned blue, but not at >10000K.

I can buy MCBs for my CU for about £3.50 or RCBOs for about £35 - although I managed to find them online for about £17 when I was changing mine.

I can't think of any. There are even additional advantages - unlike most MCBs, the RCBO isolates both live and neutral when off. The ones on mine can even remain connected, but off, for working on the circuit or for carrying out insulation resistance testing.

Yes, patients like my sister who is undergoing chemotherapy and is now in isolation, having picked up a chest infection and norovirus in hospital.

Is that going to happen tho given the way you lot are so keen on ring mains ?

I had 15. Only thing they did was piss on a few monitors and delaminate them.

That's an accurate butt. I can see 999, but not 911.

Don't be ridiculous. Cats have stereo vocal chords.

Mine couldn't locate themselves for peanuts. Maybe I shouldn't have fed them peanuts.