Portable electrical appliances on construction sites are exposed to rough handling, moisture, and dust that accelerate wear and increase the risk of electric shock or fire. Regular inspection and testing ensures that faulty equipment is identified and removed from service before it causes harm. This talk covers the PAT testing regime for site equipment, user checks, and what to do if you find a defective appliance.
Key Hazards
Electric shock from damaged cables or faulty insulation on portable tools
Fire caused by overheating appliances with internal wiring faults
Continued use of untested equipment with hidden electrical defects
Water ingress into damaged tool casings causing short circuits on site
Control Measures
Check that all portable appliances carry a current PAT test label before use each day.
Carry out a visual user check of the cable, plug, and casing before connecting any tool to the supply.
Remove from service immediately any appliance with a damaged cable, cracked casing, or missing label.
Ensure all 230V portable appliances are protected by a 30mA RCD or use 110V reduced voltage supplies.
Report defective appliances to your supervisor and attach a 'Do Not Use' tag until repair or disposal.
Ensure PAT testing is carried out at the intervals specified in the site electrical management plan.
Keep a register of all portable appliances on site including test dates and results.
Never attempt to repair electrical equipment unless you are a competent and authorised electrician.
Store portable tools in dry conditions and protect them from impact damage when not in use.
Remember
Always carry out a visual check of cables, plugs, and casings before using any electrical tool
Remove defective appliances from service immediately and tag them as not safe for use
All portable appliances must display a current PAT test label before being used on site
Use 110V reduced voltage supplies or 30mA RCD protection for all portable equipment on site
Never attempt to repair electrical tools yourself unless you are a qualified electrician
PAT testing intervals are set in the site electrical management plan and must be followed
Applicable Legislation: Electricity at Work Regulations 1989 · IET Code of Practice for In-Service Inspection and Testing · PUWER 1998 · Health and Safety at Work etc. Act 1974