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RCCB tripped, saved a few lives this morning

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  • 27-10-2022 6:25pm
    #1
    Calahonda52
    Registered Users Posts: 12,308 ✭✭✭✭


    IMG_20221027_111426.jpg
    IMG_20221027_100111.jpg

    Sparks replaced first 3 pieces

    “I can’t pay my staff or mortgage with instagram likes”.



«1

Comments

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    #2
    SCOOP 64
    Registered Users Posts: 5,236 ✭✭✭SCOOP 64


    That looks severe ,what was running off it?



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    #3
    standardg60
    Registered Users Posts: 4,449 ✭✭✭standardg60


    Jaysus, were you charging the car off that or something?



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    #4
    Calahonda52
    Registered Users Posts: 12,308 ✭✭✭✭Calahonda52


    7 kW for the car, 8 hrs Charger limits the draw so fuse was weak link

    “I can’t pay my staff or mortgage with instagram likes”.



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    #5
    kirk.
    Registered Users Posts: 4,958 ✭✭✭kirk.


    It's common enough fuse might have been not tightened

    What's the RCD trip got to do with it



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    #6
    Calahonda52
    Registered Users Posts: 12,308 ✭✭✭✭Calahonda52


    https://www.boards.ie/discussion/comment/119803581#Comment_119803581

    Based on your previous unhelpful posts here in relation to different posts of mine I refuse to engage with you.

    Its certainly not this

    https://www.youtube.com/watch?v=oGpFcHTxjZs

    “I can’t pay my staff or mortgage with instagram likes”.



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    #7
    The Continental Op
    Registered Users Posts: 6,451 ✭✭✭The Continental Op


    I'm with kirk in this one don't see what the RDDB has got to do with it? Its not an over current device as far as I know.

    Looks like the fuse got very hot and burnt and out the two devices either side of it.

    Wake me up when it's all over.



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    #8
    Sleeper12
    Registered Users Posts: 16,964 ✭✭✭✭Sleeper12


    I think it's the fact that the RDDB tripped that alerted Calahonda52 to the potential fire hazard



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    #9
    The Continental Op
    Registered Users Posts: 6,451 ✭✭✭The Continental Op


    https://www.boards.ie/discussion/comment/119805488#Comment_119805488

    But the fuse is burnt out? You can't see the "tell" that goes when it blows - the bit in the middle. If I heated up an RCCB I'd be fairly sure it would trip eventually. The car charger would have only be drawing 32 Amps leave another 30 Amps for the house.

    If the fuse didn't blow then even more reason it probably overheated.

    Wake me up when it's all over.



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    #10
    meercat
    Registered Users Posts: 4,743 ✭✭✭meercat


    CD93FC73-9EFE-4E33-B4E8-B4C1125EC3CF.jpeg


    an electric shower was in operation when this happened


    From safe electric

    Neozed fuses if not tightened fully are subject to overheating and “Thermal Runaway”, particularly when supplying High Current loads. We would recommend that these fuses are replaced with 63- amp MCBs when adding any High Current addition to any installation.



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    #11
    kirk.
    Registered Users Posts: 4,958 ✭✭✭kirk.


    It's a well known issue with the neozed fuses seen it loads of times

    Not sure on the RCD trip maybe it was the heat or someone else knows on that



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    #12
    meercat
    Registered Users Posts: 4,743 ✭✭✭meercat


    https://www.boards.ie/discussion/comment/119805647#Comment_119805647

    I’d imagine it tripped because of the heat alright. Luckily it did because I’d say the op went to check the distribution board



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    #13
    10-10-20
    Registered Users Posts: 6,852 ✭✭✭10-10-20


    https://www.boards.ie/discussion/comment/119805644#Comment_119805644

    That's a great photo. I like how the powder adds a ghostly feel to it.

    So that looks like it had gone from being 'exothermic' to being in flame and shows why new CU boxes need to be metal rather than self-extinguishing plastic. Lucky catch before the plywood and chipboard backing board fully caught.


    "Neozed Fuses - D0 fuse-links are used as the most reliable protection of electrical installation, control and signal circuits against overload and short-circuit currents." 😂



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    #14
    meercat
    Registered Users Posts: 4,743 ✭✭✭meercat


    https://www.boards.ie/discussion/comment/119805741#Comment_119805741

    Luckily the householder had a powder fire extinguisher (and knew how to use it)

    another shower fire(shower in operation) and the householder had a fire extinguisher but didn’t know how to use it. Neighbour’s came in and did


    E846312A-7FC4-4D45-9911-F274AB537570.jpeg




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    #15
    kirk.
    Registered Users Posts: 4,958 ✭✭✭kirk.


    ..

    Post edited by kirk. on


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    #16
    10-10-20
    Registered Users Posts: 6,852 ✭✭✭10-10-20


    https://www.boards.ie/discussion/comment/119805912#Comment_119805912

    This second one wasn't caused by the neozed fuse, right? Was it loose wiring on the double-pole MCB?

    And are these inspected by a safety body after the event or does a REC submit a report, or how does that side of things work?



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    #17
    kirk.
    Registered Users Posts: 4,958 ✭✭✭kirk.


    Loose connections on shower rcbo by the look of it



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    #18
    meercat
    Registered Users Posts: 4,743 ✭✭✭meercat


    https://www.boards.ie/discussion/comment/119807403#Comment_119807403

    Spot on



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    #19
    meercat
    Registered Users Posts: 4,743 ✭✭✭meercat


    https://www.boards.ie/discussion/comment/119807388#Comment_119807388

    Loose conditions alright. No there’s nowhere to report issues. Electric showers are notorious for issues such as this. Either in the pull cord or distribution board itself



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    #20
    kirk.
    Registered Users Posts: 4,958 ✭✭✭kirk.


    Holiday homes were notorious for neozed fuse issues

    Electric showers is mostly poor installs , isolators badly fitted and shower terminals loose

    Loose connections is mostly handymen



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    #21
    iwillhtfu
    Registered Users Posts: 6,370 ✭✭✭iwillhtfu


    I'm curious how no one smelt that long before it burn't out. This was all to common when fuse boards were mounted on chip board and covered in wooden boxes and sometimes under the stairs.😱 House fires are a lot less common than they use to be although they're making a resurgence with chinese batteries and USB charging leads.



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    #22
    kirk.
    Registered Users Posts: 4,958 ✭✭✭kirk.


    https://www.boards.ie/discussion/comment/119808129#Comment_119808129

    Ya that's the irony

    Standards and safety improved meanwhile cheap electronic junk creating a hazard



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    #23
    meercat
    Registered Users Posts: 4,743 ✭✭✭meercat


    https://www.boards.ie/discussion/comment/119808129#Comment_119808129

    the one with the burnt out main switch was in a seldom used garage and went unnoticed

    the one with the burnt rcd was noticed over a few weeks. The householder thought next door were smoking “weird tobacco” and was using a scented candle to mask the smell !!!!!



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    #24
    iwillhtfu
    Registered Users Posts: 6,370 ✭✭✭iwillhtfu


    https://www.boards.ie/discussion/comment/119808239#Comment_119808239

    They must've had some amount of candles on the go the smell is rank.



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    #25
    kirk.
    Registered Users Posts: 4,958 ✭✭✭kirk.


    The first pic was probably the neozed switch fuse there was a recall on, the slide in push up type

    I used to change them a lot when I was a REC stopped bothering after a while

    Nobody was willing to pay for the work so it came down to informing the householder , electrical wholesalers would just give u a replacement



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    #26
    kirk.
    Registered Users Posts: 4,958 ✭✭✭kirk.


    Neozed are tricky to tighten that's part of the problem



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    #27
    Flinty997
    Registered Users Posts: 11,778 ✭✭✭✭Flinty997


    I've a had few problems with a shower.

    Is there no Rolls Royce of connections that's gives you better connections, so these problems don't happen.

    Last time I got the bathroom with the electric shower done it was suggested moving it to isolator off the fuse board.

    Or is the case that these switches failing is the way this works?



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    #28
    kirk.
    Registered Users Posts: 4,958 ✭✭✭kirk.


    https://www.boards.ie/discussion/comment/119808350#Comment_119808350

    It's quite common for terminals not to be tightened , not so much by sparks usually plumbers and DIY

    The neozed fuses often need an extra twist too very commonly not tightened

    Some disagree but best just to leave shower isolators on and they won't give much trouble , as seen from the pics the fire hazard is when the shower is in use



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    #29
    kirk.
    Registered Users Posts: 4,958 ✭✭✭kirk.


    https://www.boards.ie/discussion/comment/119808350#Comment_119808350

    I know what you're talking about there a contactor at the fuse board controlled by a switch at bathroom

    Been discussed before but doesn't comply with wiring rules as you're not isolating supply to shower locally



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    #30
    Flinty997
    Registered Users Posts: 11,778 ✭✭✭✭Flinty997


    Sorry there is a isolator at the shower.

    At the fuse board the trip is moved off the main board.

    All the shower switches I've had a problem with were fitted by electricians. Do they come loose over time or something.



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    #31
    kirk.
    Registered Users Posts: 4,958 ✭✭✭kirk.


    They give trouble regardless of who fits them mostly the cheaper ones

    Crabtree I was fitting when I was a REC a quality isolator



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