Frequently Asked Questions
What are the main types of electrical testing used in construction?
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In construction, electrical testing typically includes continuity testing, insulation resistance testing, and earth fault loop impedance testing. At Stonehaven, we carry out these tests to ensure every electrical installation is safe, compliant, and fully operational before the system is energised.
What are the steps involved in electrical testing on a site?
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Stonehaven follows a structured approach that begins with visual inspections to check installation quality, followed by continuity, insulation, polarity, and earth fault verification tests. Each stage is conducted and recorded under our RICS-aligned QA/QC framework to ensure the electrical system performs as designed and complies with safety codes prior to handover.
What do C1, C2, and C3 mean in electrical inspection reports?
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During testing, Stonehaven categorises findings based on risk. A C1 rating highlights an immediate danger requiring urgent action, C2 indicates a potential hazard that must be addressed promptly, and C3 refers to an improvement recommendation. This helps clients prioritise corrective works and maintain safety at all stages.
Why is electrical testing important in construction projects?
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Electrical testing is essential to confirm that new installations are safe, compliant, and defect-free. At Stonehaven, we detect issues early, prevent hazards, and validate system performance before energisation—helping clients avoid equipment damage, rework, and certification delays.
What are the five standard electrical tests carried out on-site?
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The standard tests performed by Stonehaven include continuity, insulation resistance, polarity, earth fault loop impedance, and RCD testing. Together, these verify that circuits are connected properly, insulation is sound, protection systems are working, and installations are ready for safe energisation.