cooker tripping rcd

[wrighty]

hi guys

just been asked to have a look at a cooker tripping an rcd, its a split board single rcd.

she changed the element and didnt have any problems for a month. now all of a sudden the cooker is tripping the rcd after 10minutes of it been on.

any suggestions on what could be causing this, before she buys a new cooker?

cheers

 

[chopper76]

Could still be the element (even tho fairly new), elements take a while to get to full working heat capacity and therefore can wait a little before thy trip, try an IR test on the element

 

[wrighty]

so if thats the case would the element need changing again or what? sorry im useless with household appliances

 

[telectrix]

sounds like another element has gone. you can IR it cold and it may show clear. with the back off the cooker, switch each element on one at a time till you find the one taheat's causing the problem. then with that element dissed, IR the bugger hot at 1000V.

 

[chopper76]

Yeah, could be a pattern part ( cheap foreign copy) rather than original part, or just happened to be faulty outta the box, it does happen sometimes

 

[chopper76]

Mind you don't blow clock etc, testing through the whole unit,

 

[tony mc]

Try clamping the tails with a clamp that reads mA, once it starts to warm up you will see the leakage creeping up until it trips the RCD !