r1+r2 test on 2 way lighting

[Davem]

Evening gents bit of advice, testing the above and when switches are on a reading of 3.13 ohms is apparent. Now when a switch is turned off I would expect a dead circuit I.e infinite >2000 but no a reading of 60.4 ohms is shown any thoughts on what this could be ?? Cheers

 

[R G]

I suspect the 60 ohms is from the strapper thats not on as it were , the reading your getting is through the lamp ,

 

[Davem]

Sorry I don't understand as it were ??? Also the lamp I was testing was taken out ?

 

[R G]

What about the other lamps on that circuit , because the feed to that 2 way circuit is common to the other lamps as well

 

[Octopus]

3.13 looks a bit high - how far apart were the switches?

 

[Davem]

No not all other lamps were removed, so this could point to that but why would it show that is it reading all lamps on that circuit but why isn't it picking up on any other part of the circuit standard 1 way light either on or off. Is it due to the strappers cheers

 

[trev]

I'd also say it's high, is this in a domestic environment or a commercial?

 

[Octopus]

No not all other lamps were removed, so this could point to that but why would it show that is it reading all lamps on that circuit but why isn't it picking up on any other part of the circuit standard 1 way light either on or off. Is it due to the strappers cheers

IMHO - no. both your reading are too high

 

[Davem]

That's what I thought it is in done in 1 mm t+e and it's domestic

 

[trev]

Dave, if you're not doing the test proerly then you're A going to get daft readings and B wasting your time.
Go back and do it properly mate then if you're still getting silly readings then yell