Switchgear controls and protects electrical circuits on construction sites and in permanent installations. Operating switchgear incorrectly can cause arc flash explosions, electrocution, and widespread power failure. Only authorised, competent persons may operate switchgear, and specific procedures must be followed for both routine switching and fault conditions. This talk covers the key safety requirements for switchgear operation.
Key Hazards
Arc flash explosion causing severe burns and blast injuries
Electrocution from contact with live busbars inside switchgear panels
Equipment damage from operating switchgear in the wrong sequence
Fire from overloaded or faulty switchgear components
Control Measures
Ensure only authorised, competent persons operate switchgear at any voltage level.
Follow the approved switching schedule and sequence for every switching operation.
Wear arc-rated PPE including face shield, gloves, and flame-resistant clothing when operating.
Stand to the side of the switchgear panel when operating circuit breakers to avoid arc blast.
Use insulated switching sticks for manual operation of high-voltage disconnectors.
Verify the correct circuit is being operated by checking labels and circuit diagrams before switching.
Never open switchgear panel doors while the equipment is energised unless specifically authorised.
Report any unusual noise, smell, or visible damage to switchgear before attempting to operate it.
Record all switching operations in the switching log with time, circuit, and operator details.
Emergency / Rescue
If an arc flash occurs, do not approach the switchgear. Call 999. Treat any burns with cool running water. Do not touch the casualty if they are still in contact with the electrical source. Isolate the supply from a remote location if possible.
Remember
Only authorised competent persons may operate switchgear at any voltage level on site
Follow the approved switching schedule and sequence for every operation without exception
Wear arc-rated PPE and stand to the side of the panel when operating circuit breakers
Verify the correct circuit by checking labels and diagrams before switching anything
Report any unusual noise, smell, or visible damage before attempting to operate switchgear
Applicable Legislation: Electricity at Work Regulations 1989 · HSG85 (Electricity at Work: Safe Working Practices) · BS 7671 (IET Wiring Regulations) · PUWER 1998