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RCBO's and IR testing

Jaymack
I have had a problem with 5 off Wylex RCBO's. These were bought by a houseowner and fitted by him as there was no RCD protection for some circuits requiring such. These Wylex RCBO's have a warning hidden on the body that connections should be disconnected for Insulation Testing ..........too late the man cried!. For expediency and availability, I have redesigned the arrangement to have MCB's with a common RCBO as a M.S..

I have been in contact with Wylex technical help, who say that they should have been OK to withstand 250V IR testing as in this case, but to return them to the dealer. Anyone else have had similar problems?


Jaymack .
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    davezawadi:

    I think that there is a serious problem lying hidden here. I do not like disconnecting anything for a periodic inspection ...



    Quite right too - 651.2 "Periodic inspection shall be carried out without dismantling, or with partial dismantling, as required."


    The more you dismantle, the further away you get from the installation as is.


    Any comments on my point about about testing circuits with SRCDs or USBs which have to be disconnected?
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  • 0

    davezawadi:

    I think that there is a serious problem lying hidden here. I do not like disconnecting anything for a periodic inspection ...



    Quite right too - 651.2 "Periodic inspection shall be carried out without dismantling, or with partial dismantling, as required."


    The more you dismantle, the further away you get from the installation as is.


    Any comments on my point about about testing circuits with SRCDs or USBs which have to be disconnected?
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