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Electricity is essential on construction sites, but if the risks are not managed properly, it can pose serious dangers to people and property. Proper controls must be in place wherever electricity is used to keep everyone safe. 

Because we use electricity differently across a site there are different ways to help manage the risks. 

Residual current devices (RCDs) 

All hand-held appliances, lights, and electrical equipment used on-site must have protection in place against electric shock This can be done simply by connecting all electrical equipment through an RCD. 

An RCD continuously monitors the electric current flowing along a circuit and disconnects the electricity supply if a fault is detected, reducing the risk of electric shock. 

There are three types of RCD:

Fixed at the switchboard

A switchboard RCD is the most effective option. It protects all the wiring and appliances on that circuit. This must be installed by a licensed electrician.

Built into the powerpoint

A socket-outlet RCD is built into a standard powerpoint and protects equipment plugged into it. A licensed electrician is required for installation.

Portable 

A portable RCD can be moved between powerpoints as needed. There are a few different types of portable RCD: 

• Some plug directly into a powerpoint with an appliance or extension lead connected
• Others are built into extension leads or appliance leads. 
• Some are part of Portable socket-outlet assemblies (PSOAs). 

No electrician is needed – you can buy a portable RCD at a hardware shop or electrical equipment supplier, just make sure they are fit for commercial use. Both portable and non-portable RCDs should be tested daily.

Testing

Keep you and your team safe while working around electricity by checking your RCD (using the test button) daily before use. Get RCDs tested by a trained and competent person regularly, at least every three months.

Leads & Cords

Leads and cords are easily damaged, particularly those connected to equipment that is often moved. To protect them: 

• Use cable protectors, covers, non-conductive hooks, and ramps.
• Protect leads from sharp objects, footwear, doors, vehicles, liquids, grease, and heat.
• Arrange leads to prevent tripping hazards. Avoid running leads across aisles or passages.
• Elevate leads to keep them off the ground and ensure they are accessible without needing a ladder.
• Use insulated supports to relieve strain on plugs.
• Inspect leads for damage before use and have them tested and tagged regularly by a qualified person.

Check out our one-pager on Electrical Safety. You can print and display this at work, helping everyone manage electrical shock risks on-site.

During regular Site Reviews using the HazardCo App, check that RCDs and all electrical equipment are in good condition and have been tested and tagged. Electrical equipment should be tested and tagged every 3 months for construction, every 6 months for manufacturing, and every 12 months for low-use spaces such as offices.

For any questions or support, contact HazardCo and speak to one of our Health and Safety Advisors on 0800 555 339.