ins res 40 meg

[adamh]

because that is almost a dead short which the rcd will pick up on

 

[pushrod]

i jst checked me metre when i test on 500v dc the scale goes to 299M ohm when i test at 250v dc the scale goes to 99.9 Mohm i hope this has cleared up the confuison soz about tht ;-)

the problem i had the other day was on a lighting circuit upstairs when testing at 500 v dc the reading read 2.95mohms and only went halfway across the scale normaly when i get this reading it may suggest a lamps been left in somewhere but i removed everyin prior to testin i checked all the fittings lites switches and all the cable runs couldnt find a fault anywhere so i decided the cable was just old and needed rewire wot do ya recken?

Have you looked in the attic for a loft light?

 

[lister]

Nice one pushrod, i've been caught out with the very same thing before.

 

[Spudnik]

Or possibly a TV booster?