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Kettle earth - why?

Hi guys, just curious.  I have a plastic electric kettle that has an earth lead in the flex.  I can't see much point in it.  It will trip the RCD in the event of an element insulation breakdown so there's some use there.  Any thoughts?
Parents
  • leakage current can go through water up handle  strip  it will harmful to the user, leakage current level should match sensitivity tripping level of RCD, most element current leakage level buildup little by little at the time, at the beginning of current leakage it will sense user if it tuch the water 

     My experience -if change the N& L wire from plug top of  current leakage element,it can use the element without tripping RCD 

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  • leakage current can go through water up handle  strip  it will harmful to the user, leakage current level should match sensitivity tripping level of RCD, most element current leakage level buildup little by little at the time, at the beginning of current leakage it will sense user if it tuch the water 

     My experience -if change the N& L wire from plug top of  current leakage element,it can use the element without tripping RCD 

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