Yes, as you know, “18th” CUs are generally metal (etc) and to contain fire snd the standard calls for there to be a front cover. The front cover is usually hinged at the top so it can’t be left open.
Yes, as you know, “18th” CUs are generally metal (etc) and to contain fire snd the standard calls for there to be a front cover. The front cover is usually hinged at the top so it can’t be left open.
Likely, although that particular range of circuit breakers was available well into the 2000s so it could be more recent.
Suggest taking £10k off the price for a rewire, plus another £10k for every other thing that they won't allow any inspection of, such as central heating, windows, the roof, etc.
Now I've looked again I see that. I believe that is the arrangement fitted inside a CU and not designed to be used as shown.
Cross that off the list, unless you can cite a standard that requires it.
Definitely not
It requires only that it be constructed out of 'non-combustible' material ["metal (etc)"] but says absolutely nothing about 'fire containment'. A metal CU would be compliant with the "18th" if it was absolutely covered in holes (on all surfaces other than the top), hence certainly non 'fire-containing' - provided only that the holes were smaller than 12 mm (to preserve the required IP rating).As I said/asked, I wondered if that's what you meant (given that BS7671 does not, itself, explicitly require a front cover) - but I don't think that the Standard actually does require that.
Shouldn't it have (in 1970)? I suppose I must be wrong, but I thought the requirement for CPCs appeared in/around 1966?
Well once you remove all "the gubbins" you have a tin box with a DIN rail in it. The dimensions of the DIN rail are standardised, and I think (stand to be corrected) that the relationship between the DIN rail and the big slot in the front panel is also standardised. So you could fit any make of gubbins and, as you say, as long as you use a complete matching set then it's hard to see how it could not be OK electrically. Peel off the sticker with the name on and who would know anyway.
The house I was brought up in, during the 50s and 60s, did not have a ('multi') 'fuse box' at all. Initially is just had a couple of cast-iron 'switch-fuses', one for ('the') lighting circuit and the other for ('the') sockets circuit - but a third (I think steel, rather than cast-iron) one was added when we eventually acquired an immersion heater to supplement the coal-fired water heating
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