Consumer unit tripping

Dave · 2008-12-21T15:16:00+00:00

Here's a bit of an old chestnut - but with a responsibility angle.My girlfriend lives in a Housing Authority house.Those nice people have done a bit of updating, including the consumerunit.Now, when she puts the washer on, the CU frequently trips.The housing authority say, it's her appliance(s).She says it didn't happen before.I was thinking of measuring the current in the appliance earth cables- suspecting capacitors included in radio interference suppressioncomponents ???I was also thinking of changing the RCD from 30mA to 100mA. I thinkthat is legal and would likely stop it ???By the way, I think that a 30mA trip could just about prevent a lethalshock, wheras 100mA would not.[I don't really fancy the "responsibility" of changing a "safety"component in a rented house.]But (at least to me), a 30mA RCD seems to offer NO protection against:1. right hand on live.2. left hand on neutral.i.e. current through the heart, not shoes to earth when wearingseriously insulating shoes (eg rubber soled trainers).Any comments.Happy ChristmasDave

Dec 21, 2008 20 Replies

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meow2222 17 years ago

If you touch the 2 together, with 2v difference and a fraction of an ohm, clearly many amps will flow. Compare that with a local earth rod (TT), where earth impedance is fairly high, and way less current flows.

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Consumer unit tripping

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