loop impedance on lighting circuit

[jimmymack56]

Hi everone,I am new to the forum and think its brilliant,I am currently
studying for my 2394&2395 and am testing everything in sight with a
fluke 1651 multi functional tester.When i try to do a loop test on a lighting
circuit,I follow all the instuctions,but i keep getting >2000 ohms,i am obviously
doing something wrong,can anyone please advise,Thanks in advance

 

[ipf]

Welcome, jim.

 

[davesparks]

Why do you say you are obviously doing something wrong?

 

[ipf]

Don't keep pressing the wrong buttons

 

[ipf]

Is it on one lighting cct or every lighting cct?

 

[ImpededLoop]

Welcome along.

Tell us how you're conducting the test and we'll try to help you to work out if you're doing something wrong.

 

[Leesparkykent]

That was quick, seems like he has bolted.

 

[Plonker 3]

Are you getting a reading you would expect on your R1+R2 or R2 test?

 

[HandySparks]

Does the instrument give you reasonable Zs figures on a socket circuit?

 

[jimmymack56]

I am testing between the earth and live at the switch,on the video I have that is how it shows it to be done,but I am not getting the same results,I need to point out that in the video they are using a megger and I am using a 1651 fluke

 

[telectrix]

does the fluke need to use 3 leads? the megger testers ( except the 1700's) use 3 leads on no trip.

 

[jimmymack56]

yes on sockets its giving a proper reading its just when i come to doing lighting circuits it seems to go wrong,can't think what I am doing wrong

 

[telectrix]

read post #11

 

[jimmymack56]

yes,it uses 3 leads,but I have just been using the L and E,as is done in the video,also in the video they are using a megger and i am using a 1651 fluke,but wouldn't think that the make would make much difference as long as its set on the right function. It is ZI for loop impedance on the tester I have,I am trying to track down a manual for it.

 

[jimmymack56]

yes,that is all ok. I wiil go through the video again and see if i have missed something,but watched it numerous times and still can't see what i am doing wrong.I will persrvere till I finally get it.

 

[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?