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    CU 32->40a fuse upgrade

    I don't think I said otherwise, albeit my terminology may not be correct. OK. I disagree. He would certainly have told me if my hunt for a B40 was pointless.
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    CU 32->40a fuse upgrade

    JohnD has a photo.
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    CU 32->40a fuse upgrade

    I will do but it will have to wait for the next power cut (we had a 6-hour beauty yesterday when the network infrastructure caught fire) or my next late night or early morning.
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    CU 32->40a fuse upgrade

    Wylex have replied to me (see below), passively confirming that my old 1206 board does take 40amp MCBs and noting that they haven't stocked for four years. They also confirm that the aggregate draw of my active appliances should not exceed 100amps, ie less than half the aggregate max capacity of...
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    CU 32->40a fuse upgrade

    Well, that's what I've got. My shower water comes from the cold water tank in the loft. It certainly doesn't sound impressive but 0.4L more would be a >10% improvement and that might just be enough to make the shower more fit for purpose. In any event, I won't be investing in new plumbing for a...
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    CU 32->40a fuse upgrade

    I found the instructions here. They say: "To enhance electrical safety a 30mA residual current device (RCD) should be installed in all UK electric and pumped shower circuits. This may be part of the consumer unit or a separate unit." Since their other electrical instructions all use the word...
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    CU 32->40a fuse upgrade

    Thanks for an interesting post ericmark. I'm beginning to think that you have hit the nail on the head and I should let sleeping dogs lie rather than spend a fortune on multiple refurbs/upgrades just to get one new appliance. My house is over 100 years old and the wiring is over 25 years old...
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    CU 32->40a fuse upgrade

    Thank you. ISTR that when I first subscribed to the Shield cover I had to have a thorough wiring test by the SSE engineer since they only want to insure properties which are properly wired and protected from the outset. Good to know I can swap my one 40amp MCB into the shower circuit if the...
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    CU 32->40a fuse upgrade

    It's part of my Shield insurance policy with Southern Electric. They inspect me and they come out to fix anything that breaks.
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    CU 32->40a fuse upgrade

    I appreciate your concern for my safety but I'm not sure why I would say that I have an RCD fitted if I don't have one - or that my system passes my annual SSE inspection if it didn't. True, I don't know much about electricity - but that makes me extra-cautious, not gung-ho.
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    CU 32->40a fuse upgrade

    Thank you - I wondered why they were hard to find. The one already on the board was installed by a qualified electrician so I can only assume that it is compatible. My Electrolux hob is rated 7.4kW and we do sometimes use all four rings - and they all have a power boost function so I would only...
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    CU 32->40a fuse upgrade

    The RCD is separately mounted to the left of the CU, just out of shot.
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    CU 32->40a fuse upgrade

    Having just rediscovered the shower wall switch on the back wall of a built-in wardrobe, it is a simple power switch with no socket or fuse caddy. No wires are visible so I will remove the shower unit's front casing later - or possibly tomorrow now as I am being harangued to do other jobs - and...
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    CU 32->40a fuse upgrade

    I wouldn't dream of it, terryplumb. I'm waiting to get into that bathroom to take some photos, as advised. Sorry for the wrong terminology: I'm conditioned over 60 years to calling the CU a fuse box and its MCBs fuses.
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    CU 32->40a fuse upgrade

    Thanks - that's a relief …and so I won't fret about upgrading my shower fuse from 32 to 40a. But I'm getting confused about the different types - and prices up to £30+ - of Wylex B40 40 amp fuses I can buy. I've found this one at £5.40 but it sounds like it won't work in my old-school CU...
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    CU 32->40a fuse upgrade

    I'll get some photos later this afternoon. From memory I thought the shower was on a fused spur socket with an integral fuse caddy insert but I'll check.
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    CU 32->40a fuse upgrade

    Based on the Triton manual I have just read, you're right - but their cable sizing guide looks a bit clunky. Hopefully I'll find it embossed on the sheath.
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    CU 32->40a fuse upgrade

    Thank you terryplumb. I have a master RCD attached to the consumer unit and I think I also have a fuse in the shower spur socket. But I can't easily see the cable to find the size. Would I have to take the shower unit off the wall to find it or is there an easier way?
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    CU 32->40a fuse upgrade

    Hi and thanks in advance to all the givers of advice here. I want to upgrade a Triton electric shower from 8.5kW to 9.5kW but would need to swap the existing 32a CU fuse for a 40a fuse. Is there a way for an idiot to safely tell what size the wiring is on that circuit as I gather I need 8mm for...
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