R2 Wander lead

[f1ngerz]

Is it possible to use a wander lead when testing a ring ? Doesnt sound right to me but a guy I did a bit with said he does for his r2 on a ring?!

 

[roukel01]

tell him to check Guidence Note 3, last time I looked, this method on a ring circuit isn't in print!! Otherwise ask him to demonstrate, and let us know what he's doing.

 

[Sintra]

IMO no when testing a ring you also have to test r1 rn & r2 end to end resistances. So having gone to the bother of doing this you then cross connect and take the appropriate R1 + R2 readings. This method also verifies polarity.

 

[Sparky Ninja]

The only scenarion I can think of would be if the containment system was also used as a CPC. You would use a wander lead and measure R2 from numerous points within the installation, and would hope to achieve a higher reading as you distanced yourself from the origin.
You would measure R1&R2 without the wander lead, but would need it to measure R2 to verify integrity through the system.

I doubt, however, that this is what he is referring to.

R2=Yes
r2=No.

 

[WayneL]

Hi,

There is one other time that you could use this method.

If, on a PIR, there are accurate and up-to date records of previous EIC & PIRs, including test results, and there is no evidence of alterations to the 'Ring Final', then it may not be necessary to carry out the 'Continuity of Ring Final Conductors' tests.

If this is the case, there is still a requirement to confirm 'Continuity of CPC' on the ring final circuit.
This you would do with a wander lead from the MET and test at the earth-pin of each socket outlet.

You wouldn't be taking readings, by the way........not necessary, you're just confirming continuity.

 

[Amp David]

He could mean testing to find a broken conductor on a ring.

 

[Sparky Ninja]

He could mean testing to find a broken conductor on a ring.

Possibly. But you wouldn't 'need' to use a wander lead for that either.

Weird?

 

[f1ngerz]

ok quized this guy today he says that he disconnects the two legs of cpc and tests from those together to each outlet using a wander lead? Then records that as his R2 reading on his certs??