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EICR C3 mixed manufacturer breakers

Martyn
I know this will have been discussed in the past but we are on Amd 1 of the 18th now so I thought I would renew it.


The Best practice guides list mixed manufacturer breakers in a consumer unit or distribution board as a C3.


As far as I am aware Bs7671 does not have a Reg on it beyond manufacturers instructions and given EICR's are based on this standard perhaps it is justified on that basis.


Most on here will be familiar with the 16kA 'rule' in BSEN61439 Annex ZB or its predecessor BSEN60439 Annex ZA


I avoid C3's like the plague because they give all the wrong signals to a client and clearly by definition are for things which are a breach of the regs, I'm not too keen on the insurance risk of a C3 either.


My question here would be what fault rating can one apply to an enclosure where there are mixed breakers given a manufacturer will only have certified their equipment with their devices?


Enjoy!


Martyn
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    This is an interesting one.

    Last week I fitted 2 x WISKA plastic 1P65 8 way consumer units in garages and outbuildings.

    WISKA state on the accompanying paperwork that their "......enclosures are manufactured and designed to be acceptable to take all the commercially available devices in line with BS EN 60898.

    This complies with the R.D.842/2002, directive 2014/35/UE (DBT) and BSEN2208."

    Make of that what you will.

    I just fitted some stuff from CEF, namely a 30ma upfront main switch/RCD and a couple  of mcbs.

    OK, the switchgear was of one brand, but the enclosure was from another!
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  • 0
    This is an interesting one.

    Last week I fitted 2 x WISKA plastic 1P65 8 way consumer units in garages and outbuildings.

    WISKA state on the accompanying paperwork that their "......enclosures are manufactured and designed to be acceptable to take all the commercially available devices in line with BS EN 60898.

    This complies with the R.D.842/2002, directive 2014/35/UE (DBT) and BSEN2208."

    Make of that what you will.

    I just fitted some stuff from CEF, namely a 30ma upfront main switch/RCD and a couple  of mcbs.

    OK, the switchgear was of one brand, but the enclosure was from another!
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