Most electrical incidents in commercial buildings are preventable and show up on a routine inspection first.
## Monthly checks - Test every RCCB using its test button. - Look and listen at the panel - discolouration, burnt smell, humming. - Confirm emergency lights and exit signage work. - Check that panel doors close and are not blocked by storage.
## Quarterly checks 1. Tighten terminations - loose joints cause most panel fires. 2. Measure earth resistance; target under 5 ohms for general earthing. 3. Balance loads across phases to avoid neutral overheating. 4. Inspect DG changeover and battery health.
## Annual checks - Thermal imaging scan of all panels under load. - Insulation resistance test on major circuits. - Surge protection device status check and replacement if indicators show end of life. - Update the single line diagram after any change.
## Common faults we find on site - Neutral and earth shorted inside a distribution board. - MCB ratings higher than the cable can carry. - Extension boards daisy-chained under workstations. - No labelling, so nobody knows which breaker feeds what.
## Keep records A dated inspection log with photographs is what protects you during an audit or an insurance claim.
DSR Telecom provides electrical installation, panel work, preventive inspection and thermal scanning services for commercial and industrial sites across India.