07576 584901Testmasterinfo@gmail.com 24/7 online enquiries About Services Areas ReviewsOur WorkSocialContact07576 584901Request a Free Quote Home/Blog/EICR testingEICR testing # EICR failure: common causes and why older installations do not automatically fail By Test Master UK6 November 20263 min read Service illustration: eicr testingAn EICR failure is an everyday description of an unsatisfactory electrical installation condition report. It means safety findings within the inspected installation require action, not that every cable or accessory must be replaced. This guide looks at the causes behind findings and common misunderstandings about older equipment. Our separate next-steps guide explains how to organise the response after receiving an unsatisfactory report. ## Damage, connections and protective measures Damaged accessories, deteriorated insulation, unsuitable connections and deficiencies in earthing or bonding can create electrical risks. The inspector assesses the actual condition and relevant test results. A general list of possible defects cannot determine which observation code belongs on your installation. Increased demand or changes in use can reveal problems with an installation that previously served a different purpose. Tell the inspector about additions, repeated tripping, overheating or unrecorded electrical work. Do not keep resetting protective devices to see whether a fault disappears. ## Does testing against current standards make old wiring fail? An existing installation is not automatically unsafe because it predates the latest edition of BS 7671. Differences from current requirements need assessment in context. Age, an older consumer unit or the absence of a newer feature should not be turned into an automatic whole-property failure without a justified observation. Equally, continued operation is not proof of safety. A circuit can supply equipment while a protective measure is defective. Ask the inspector which finding creates danger or potential danger and how the proposed work addresses it. ## Technical questions cannot be answered by a slogan Whether a particular connecting cable, busbar arrangement or meter-tail condition is acceptable depends on its construction, suitability, protection and installation. Exposed basic insulation is not necessarily the same as exposed bare live metal, but it can still require attention. Photographs and keywords cannot replace competent inspection. C1 means danger present and immediate remedial action; C2 means potentially dangerous and urgent remedial action. C3 alone does not make a report unsatisfactory. FI reporting changed under BS 7671:2018+A4:2026, so check the edition and the inspector's explanation rather than assuming all FI observations automatically fail. ## Use the findings to specify appropriate work Retain the full report, including observations, locations, readings and limitations. Ask for a work proposal that identifies which findings it resolves. A generic instruction to upgrade everything is not a substitute for explaining the safety concerns. Arrange residential EICR testing or commercial EICR testing for the appropriate installation. For local appointments, see EICR testing in Greenford. Immediate danger needs prompt competent safety action, not a wait for a routine quote. - Read the observation and its location. - Distinguish age from a demonstrated safety defect. - Clarify the report's edition and limitations. - Match any repair scope to the actual findings. ## Sources and further reading - IET: Further investigation and EICR classification changes in 2026 - HSE: Electrical safety at work - GOV.UK: Electrical safety standards in rented homesGeneral guidance for premises in England, checked on 6 November 2026. Requirements depend on your property, systems and applicable conditions. Follow competent advice, current official guidance and your local authority's requirements. ## In this guide - Damage, connections and protective measures - Does testing against current standards make old wiring fail? - Technical questions cannot be answered by a slogan - Use the findings to specify appropriate work ## Need testing for your premises? Greenford-based electrical and fire safety services across London. Get a free quote 07576 584901 ## Related guides All guides EICR testing · 2 min read ## An unsatisfactory EICR testing report: what to do next Turn an unsatisfactory EICR testing result into a clear action plan, prioritise danger and keep the right evidence of investigation or remedial work. 4 October 2026 EICR testing · 3 min read ## EICR codes meaning: interpreting observations and avoiding common mistakes Use EICR observation descriptions, locations and reporting editions to interpret C1, C2, C3 and FI without guessing a repair from the code alone. 6 November 2026 Electrical and fire safety compliance testing for businesses, property managers and landlords across London and Greenford. 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