loop impedance on lighting circuit

[telectrix]

try using 3 leads. i don't know the flukes, but with my megger 1553, using 2 leads on no trip will throw up "trip".

 

[jimmymack56]

No,didn't bolt,lol,i am just woring out how the forum works,didn't realise i had replies till today,it was late when i posted so wasn't expecting a reply so soon.

 

[telectrix]

here:

Manuals Search

 

[Pete999]

:welcome:Are connecting you MFT to the live at the switch, or the switched live with the switch in the OFF position? do you have continuity on the cpc?

 

[Pete999]

:welcome:Are connecting you MFT to the live at the switch, or the switched live with the switch in the OFF position? do you have continuity on the cpc? ie is it connected to earth?

 

[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