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Topic Title: EARTH FAULT LOOP IMPEDANCE TESTING
Topic Summary: MAIN PROTECTIVE BONDING CONDUCTORS
Created On: 31 December 2012 11:42 AM
Status: Post and Reply
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 02 January 2013 02:57 PM
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Avatar for Parsley.
Parsley

Posts: 885
Joined: 04 November 2004

Originally posted by: AJJewsbury

it's normally the R1+R2 box that gets completed, probably because that method has also been used to verify polarity in theory.


If only it did. It can't spot R1/R2 reversal - so only verifies polarity if R2 is already known to be correctly connected and only proves R2 continuity if R1 is already known to be correct. Chicken & egg.

- Andy.


I should have highlighted in theory Andy.

I imagine a large amount of new installs just get a R1+R2 at the EOL of the circuit.

Regards

Regards
 02 January 2013 02:58 PM
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Avatar for ebee.
ebee

Posts: 5621
Joined: 02 December 2004

Seriously though.
I think that, providing we use one of the new all singing all dancing testers and limit the test to 50V or better still 25V then this should be acceptable as per John`s original question.

Notice I say "should" not "shall" though

-------------------------
Regards,
Ebee (M I S P N)

Knotted cables cause Lumpy Lektrik
IET » Wiring and the regulations » EARTH FAULT LOOP IMPEDANCE TESTING

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