High continuity reading when testing lighting circuit

[MWE]

defo no ariel booster but thanks for input sparkswillfly

 

[nickblake]

Take out all the lamps and do it again , you could have a open circuit at a point and the reading you are getting is back feeding to the CDU via the L and N so you could be getting a reading at the CDU N and E through the lamps

 

[MWE]

Removed all the lamps and tested again, IR aswell and still same readings

 

[telectrix]

do a continuity between point 3 and the last point. if that's ok, you know you have a fault between 2 and 3

 

[MWE]

hi telectrix i know i have the fault between 2 & 3 ive done the ir test on this bit of the circuit and all ok but the continuity reading is high all connections are sound what are visible,i am now thinking that there has been another connection made inbetween at some point which obviously i cant see. NIGHTMARE

 

[eskimo39]

Theres not a shaver socket on the lighting circuit is there?

 

[MWE]

hi no shaver point either

 

[pushrod]

A couple of other things to check could be any outside lights (had this the other day) spurred off the lights, anything in the loft and also has somebody spurred a socket off the lights?


Since P = V²/R = 230²/43(?)ohms i think you are looking at something that could be using in the order of 1200watts. If that was a single bad connection that would be a lot of heat and a lot of voltage dropped. Are the lights normal brightness when on ? if they are i think its a question of slowly wondering round with a cup of tea and looking for something you've missed.