Metrel Earth Electrode test - current injector clamp and measure clamp - can i use on domestics TTs?

[John-]

Hi

Have to say Meterel not been very helpful here. Has anyone any experience of using the current clamps on domestics where you cannot get your current and voltage stakes in the ground near the property? I have a project where it is TNCS, in very rural area prone to loss of Neutral. I have put some stakes in so in the event they do loose neutral the metal work they have and the ground should be at the same potential if here are any high neutral currents flying about.

Would it be possible to test this electrode disconnected from the PME using the current clamp method? Otherwise i would have thought the reading will take into account the TNCS reading?

I should be in a position to test this soon with the clamps, but wanted to know if i am wasting my time and if anyone else had an experience of using this method, regardless of tester make, so that they could share their experience.

Thanks

JB

 

[UNG]

For Metrel tech support you are better off raising a support ticket at Metrel's slovenian website metrel.si since Gorazd who knew the meters inside out left Metrel UK a few years ago the UK tech support can be very poor at times

I have used the clamps on a TT rod and quite a few lightning protection rods but my preferred method is using the Metrel TEK118 or the standard lead set with the earth lead connected to the rod as I think it gives a more accurate reading

 

[John-]

Thank yo for the reply. Whist i do have a situation with two rods, that is the exception rather than the norm. It seems you cannot use this approach on a single rod install as per Info i just got back form them: -

"From speaking with the factory they have said"



"Measurement should be valid. If all parts are looped back to earth, it is ok."
How did you get it work with one earth stake please?

Cheers

JB

 

[westward10]

I don't think it will work with only one stake unless some meters have different operating parameters. It doesn't necessarily have to be a stake, extraneous buried parts connected to the main earth terminal should also work.