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3x 2.5mm in MCB

vantech

Hi,

Any issues with 3x 2.5mm cables in an MCB?

MCB feeds 3 socket radials. I don’t see any issue with loading etc, however is there any regulation / guide that prohibits this many single conductors in a single MCB?

I am sure spurs from MCBs on ring finals are allowed, so I am thinking this is fine as long as they are secured correctly.

Thanks. 

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    if all are well seated and survive a 'tug test' then there is no real problem,  however if due to the design of the terminals it will not hold - and I have had that with a mix of diameters converging on a clamp terminal-  then the quick fix is one of the wago type things nearby.  But if that extra part can be avoided, that is best.Certainly no reg, against it unless makers instructions explicitly say something, and I'd be most surprised if they did.

    Mike.

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  • 0

    if all are well seated and survive a 'tug test' then there is no real problem,  however if due to the design of the terminals it will not hold - and I have had that with a mix of diameters converging on a clamp terminal-  then the quick fix is one of the wago type things nearby.  But if that extra part can be avoided, that is best.Certainly no reg, against it unless makers instructions explicitly say something, and I'd be most surprised if they did.

    Mike.

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