Hi all, I've just come accross a duff 3 Phase RCD during a PIR (fails to trip at 30mA when tested). The point is that this RCD and Consumer Board is obsolete and Wylex do not have a replacement that I can use. Has anyone else come accross this one before? and how did you get around it? The CU is in good nick and tests okay, so it seems a bit much to recommend replacing the whole thing. Also, just maybe one of you has one of these RCDs in your shed!
 
Hi all, I've just come accross a duff 3 Phase RCD during a PIR (fails to trip at 30mA when tested).

Interesting point about RCDS - manufacturers only rate them within +-50% - so you have an effective range of 15mA to 45mA and an RCD might trip anywhere within those two figures.

Had this, the other way round, with several MK RCDs a couple of years back.
 

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Wylex WES 100/4 RCD fails testing.
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JH Elect,
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