This one beat me and I'm not sure why I'm wrong | on ElectriciansForums

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RCBO offers protection against
1. Basic contact
2. Short circuit current and earth fault current
3. Short circuit current
4. Short circuit and overload current
 
Ha - It's another poorly worded question. I reckon it should be "an MCB provides ..."
Snap - Tel beat me :)
 
Some of these mock exam questions are written by Mickey Mouse.
I suppose they do make for a bit of research and questioning on the part of the reader . But if you were to take their answers as gospel you may fail the exam .
 

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