Domestic Rcbo

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Have just fitted 4 new RCBO'S RCD on all fried on first test, Am sure have fitted correctly am a newly qualified electrician is it me or faulty kit please help.
 
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HandySparks

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Have just fitted 4 new RCBO'S RCD on all fried on first test, Am sure have fitted correctly am a newly qualified electrician is it me or faulty kit please help.
As above.
What "first test", exactly?
And how have they failed? ie what don't they do now that they should do if working properly?
 

SJD

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What test(s) have you done with them connected? Insulation resistance testing might well have "fried" them.
 

Guitarist

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Maybe his first test was 1kv across them!
Genuine post or something to get us talking abut RCBO's? :)
 

stef

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I remember an incident like this: press the trip button, reset the RCBO only half way so that the load kicked in and the it made a bang and thenRCBO was ****ed. That was an RS own brand. I remember we were betting that a RCBO would never fail, but it did.
 

topquark

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Should still survive up to 6KV Icn (in theory). Perhaps he's invented some devious new device for us all to use. A RCBO with overvoltage protection as well ;)

Edit: Not funny then :(
 
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stef

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Bit strange that all four failed with the test. Was it the insulation test, perhaps?
If you push it really, you can wreck anythingmif you just try hardmenough. But surely, an RCBO should survive the standard test procedures, unless it is a fake China import.
 

Guitarist

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Bit strange that all four failed with the test. Was it the insulation test, perhaps?
If you push it really, you can wreck anythingmif you just try hardmenough. But surely, an RCBO should survive the standard test procedures, unless it is a fake China import.
There are quite specific instructions supplied with RCBO's regarding testing. IR testing them is not recommended :)
 

Strima

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Could you be a little more descriptive of 'fried'? Or perhaps they've been sautéed...
 
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