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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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  • 0
    Further to my previous post, there is a make of RCBO that only needs to be switched off for IR testing a CU,

    This article is from October 24th 2018. To quote "However, all of that can be avoided with Crabtree Miniature RCBOs, as they are two-pole switching devices. The only thing that has to be done to get a circuit ready for an insulation resistance test is to switch the device off. This saves time and money from your annual budget on essential testing, and provides higher levels of protection for all who interact with it. In a single second the circuit is ready to test. There’s no need to disconnect the circuit cables, no need to attach test leads, and no need to be concerned about reconnecting cables either. All of which makes this testing process easier, faster, safer and cheaper too". see the link


    Jaymack

    https://www.electrium.co.uk/news/rcbo-spells-savings-for-testing
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  • 0
    Further to my previous post, there is a make of RCBO that only needs to be switched off for IR testing a CU,

    This article is from October 24th 2018. To quote "However, all of that can be avoided with Crabtree Miniature RCBOs, as they are two-pole switching devices. The only thing that has to be done to get a circuit ready for an insulation resistance test is to switch the device off. This saves time and money from your annual budget on essential testing, and provides higher levels of protection for all who interact with it. In a single second the circuit is ready to test. There’s no need to disconnect the circuit cables, no need to attach test leads, and no need to be concerned about reconnecting cables either. All of which makes this testing process easier, faster, safer and cheaper too". see the link


    Jaymack

    https://www.electrium.co.uk/news/rcbo-spells-savings-for-testing
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