what causes earth leakage?

[ExArmy]

testing a house today before I put RCD protection on it and i got 300mA earth leakage. appox 100mA from the sockets, 180mA on the downstairs lighting circuit, then 20 odd mA accross the rest of the circuits.

I had a poke around the downstairs lighting circuit, couldn't see anything obvious, did R2 tests at all points (OK), did IR test and it was in the region of 650MΩ L-N, L-E and N-E.

as for the sockets, 2 chest freezers that are older then me are the cause of 50mA between them, rest is unnacounted for?

what causes this?

 

[pushrod]

how do you measure earth leakage from a property??

Earth leakage clamp meter across main earth or meter tails - 2nd method is best.

 

[GLENNSPARK]

the really confusing issue is when the positrons decide to intervene. a traffic jam at the junction would ensue, causing road rage and the release of megajoules of energy, this could result in a massive meltdown of the supply cable and so we could all have the rest of the day in the pub

As long as its all on the old beer engines...forget about pumped....lol............

 

[aaelectric]

Earth leakage clamp meter across main earth or meter tails - 2nd method is best.

where do you buy these?

 

[scotsparky]

Rs!! £250

 

[1shortcircuit]

where do you buy these?

Dilog DL6507

T.I.S.550

:thumbsup

 

[GLENNSPARK]

Naa naa ne naa naa......... my mft will measure earth leakage........

 

[1shortcircuit]

Naa naa ne naa naa......... my mft will measure earth leakage........

Okay then Mr Smarty Pants, I guess you ought to be posting a link to your model of MFT for future onlookers

:thumbsup

 

[telectrix]

Naa naa ne naa naa......... my mft will measure earth leakage........

when it'll make the tea/coffee, then i'll be impressed.