While there is no fixed legal interval, employers must ensure systems are maintained to prevent danger, which in practice means following industry guidance.
For most offices and commercial premises, the recommended testing frequency is once every five years.
More frequent inspections are recommended for higher‑risk environments (for example: industrial, wet, corrosive, or public entertainment venues).
For high-use facilities, we recommend combining EICR testing with thermographic imaging surveys to detect hidden heat anomalies before component failure occurs.
GridCore can help you build a tailored inspection schedule based on your risk level, usage, and regulatory requirements.