Earth Loop Test | on ElectriciansForums

Discuss Earth Loop Test in the Australia area at ElectriciansForums.net

S

SKY

Got called out yesterday to a blown BS88 fuse on a ring circuit.
The customer reported a big bang when plugging something into a socket.
The result was the cheap socket was faulty.

Anyhow whilst I was there (I did not really like the quality of the install) so I did a full test on the ring which included a full inspection with face plates off including continuity test and insul res.
Whilst doing earth loop I noticed this "fishing hook" type symbol appear on my Megger 1553.
I have never seen this symbol before.

What does it mean?

[ElectriciansForums.net] Earth Loop Test
 
Last edited by a moderator:
Noise Indication​
The symbol is displayed when excessive noise caused by otherequipment exists on the circuit under test. This noise can effect theaccuracy of the loop measurement. The operator is advised to repeat themeasurement or, if the noise symbol continually appears, investigate the​
cause
 

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