I tried 3 lead and was still getting the low resultWas the test carried out with line and neutral connected together.
Discuss Testing Thoughts in the Periodic Inspection Reporting & Certification area at ElectriciansForums.net
I tried 3 lead and was still getting the low resultWas the test carried out with line and neutral connected together.
What do you mean by three lead.I tried 3 lead and was still getting the low result
Carrying out IR tests is the single biggest challenge in doing an EICR. Testing inevitavly starts with very low resistance readings. We then progressively "discover" the accessories/appliances which we actually did, nt see and disconnect in our initial "visual". Its part of the learning curveCheers for the advice. Really appreciate it. I'll go back and try what you suggested.
Andy
In fact the emphasis on insulation res. testing for EICRs needs reviewing in my view. It's crucial in new builds and rewires. But for EICR,s the fixed wiring system is the least vulnerable aspect of a 5 year old electrical installation.Focus instead should be on an experienced visual check of the entire installation and testing of all safety devices. If a visual confirms no structural changes/renovations have taken place than an IR test to earth on 250 volts iss sufficientI think people worry too much over line to neutral readings, they are not necessary. Connect line to neutral and IR to earth, I do hundreds of these a week and nine times out of ten it is fine.
@mackatoon there's something not right here. I don't see how you can be getting those results from an IR test.I started to run the Insulation resistance tests @ 250v which most circuits passed with no issues apart from the Ring Main Sockets which. I got a >999 for Neutral to Live but I got a low reading of 112 ohms for Live to Earth. For 500v I got a measurement of 600 ohms Neutral - Live and 120 ohms for Live - Earth. A couple of the other circuits also struggled at 500 volts.
I tried 3 lead and was still getting the low result
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