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No where in BS7671 does it suggest a minimum value of insulation resistance for circuits when carrying out an EICR. The values given in Table 64 are for the purpose of initial verification.
Discuss Do I need to rewire? in the UK Electrical Forum area at ElectriciansForums.net
Well, yes. But I was trying to make a simple comparison for the OP to illustrate that the test results can’t be believed.No where in BS7671 does it suggest a minimum value of insulation resistance for circuits when carrying out an EICR. The values given in Table 64 are for the purpose of initial verification.
Yeah I would think so. Could be wrong but seems too good to be true in my experience. They look extremely rough and potentially have the cpc cut off. Definitely need a proper eicr done, wouldn’t rule out rewiring or not at this stage.Hi
It is good point however do you mean that both (2016 and 2021) EICRs look too good?
Please see this picture of exposed wires. How old do they look?
Thanks
Thank youThe key indicator is the Insulation Resistance figure. The minimum allowed is 2Megohm. Older installations degrade over time from their initial installation results.
The report shows an IR figure of greater than 500Megohm on all circuits. That is a figure that is hard to get even on a newly installed installation. Therefore i wouldn't trust that any IR tests have actually been carried out and calls into question the validity of the report.
Re age of the wiring. The use of red/black as wiring colours ran until March 2006 when they changed to blue and brown.
Up until 1970ish the cables often had stranded conductors. If yours are solid conductors it in dicates the red&black wiring could be anything from 50 to 20 years old. the brown&blue flex is a later addition (I guess for a wall light?) .
So...do you need a rewire? If the cabling is in good condition and the IR tests are ok then the cabling is probably OK for a good time yet. But I dont believe the IR tests. So the answer is "maybe"
ThanksYeah I would think so. Could be wrong but seems too good to be true in my experience. They look extremely rough and potentially have the cpc cut off. Definitely need a proper eicr done, wouldn’t rule out rewiring or not at this stage.
ThanksYeah I would think so. Could be wrong but seems too good to be true in my experience. They look extremely rough and potentially have the cpc cut off. Definitely need a proper eicr done, wouldn’t rule out rewiring or not at this stage.
A way round that temptation to “create” work is to make it clear to the testing electrician that, he/she would not be doing any remedial works.It feels though, that anybody who carries out these test, wants to have a further follow up works of rewiring, so their results would in most cases indicate that.
Reply to Do I need to rewire? in the UK Electrical Forum area at ElectriciansForums.net
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