loop impedance on lighting circuit

[Ib≤In≤Iz]

You have to use 3 leads with the fluke, press F1 to select L - PE, there should also be dots inside N PE L.

Then test.

I have a 1652c, but should be the same on yours I would have thought.

 

[telectrix]

i thought so, but was unsure as the only use i've ever had for a fluke was a doorstop.

 

[jimmymack56]

yes got continuity on cpc,am testing between switched live with switch open.

 

[Pete999]

yes got continuity on cpc,am testing between switched live with switch open.

with the switch open or off you will have NO LIVE FEED

 

[frontier219]

How about going to the fitting and performing a 3 lead test there? That would be a more accurate measure of the circuits Zs too. Although I am unsure whether you are actually testing the circuit for any reason, or is it just to get a feel for your meter?

 

[jimmymack56]

yes,it is on,I am putting the earth lead on the cpc,and the live probe on the switch live,I will try it with all 3 probes,but I wouldn't be able to do that at a light switch would i? I would have to go to the rose,and on the video which is on you tube,by routledge textbooks they are doing it at the switch with 2 probes,which is the one i am trying to do,I am thinking the 1651 fluke isn't capable to test like that.

 

[Leesparkykent]

yes,it is on,I am putting the earth lead on the cpc,and the live probe on the switch live,I will try it with all 3 probes,but I wouldn't be able to do that at a light switch would i? I would have to go to the rose,and on the video which is on you tube,by routledge textbooks they are doing it at the switch with 2 probes,which is the one i am trying to do,I am thinking the 1651 fluke isn't capable to test like that.

I don't use a fluke but could possibly be that the tester requires you to use the 3 leads to confirm polarity.

 

[jimmymack56]

meant to say switch closed (on)

 

[frontier219]

Not used a fluke myself, but I think what a couple of people have suggested is to join the N-E probes before testing, rather than only using two, although this will depend on if the circuit is RCD protected.

 

[jimmymack56]

yes,I am trying to get used to the meter,maybe I am watching too many videos on you tube with different meters and expecting mine to do the same,a lot of those look (are) a lot newer than mine