Electricity is one of the most important power sources that we all use every day. But if it’s not properly managed it can cause serious injury and death.
- 142 workers died as a result of contact with electricity (an average of 11 workers each year)
- 87% (123) of these deaths happened when installing electrical infrastructure
- almost half of worker deaths occurred in the construction industry.
The risks associated with using electricity must be controlled and the control measures clearly communicated.
Risks associated with electricity
The risk of death or injury from electricity is strongly linked to where and how it is used. For example, the risks are generally higher if it is used:
- Outdoors or in damp surroundings—equipment may become wet and may be at greater risk of becoming damaged.
- In cramped spaces with earthed metalwork. For example, inside a tank or bin it may be difficult to avoid receiving an electrical shock if an electrical fault develops.
Some types of equipment can also involve greater risk than others, for example:
- Portable electrical equipment including plugs and sockets, electrical connections and to the cable itself are especially vulnerable to damage.
- Extension leads, particularly those connected to equipment that is frequently moved, can suffer similar problems.
Work health and safety duties
PCBUs must manage electrical risks at the workplace so they are eliminated so far as is reasonably practicable, or if this isn’t possible, minimised so far as is reasonably practicable.
For more information on managing risks see Identify, assess and control hazards and the model Code of Practice: How to Manage Work Health and Safety Risks.
Higher risk workplaces
Depending on the workplace additional duties to manage electrical risks are required. Higher risk workplaces using certain electrical equipment must:
- regularly test that electrical equipment
- use RCDs.
Higher risk workplaces are those where operating conditions are likely to damage the equipment or reduce its life span. This includes conditions that expose the equipment to moisture, heat, vibration, mechanical damage, corrosive chemicals and dust. Examples include:
- wet or dusty areas
- workplaces that use corrosive substances
- commercial kitchens
- manufacturing environments.
Inspect, test and tag
Regular inspecting and testing of electrical equipment can save lives. It helps identify damage, wear and electrical faults.
You can detect many electrical defects such as damaged cords just by examining them, but regular inspection and testing will make sure you detect electrical faults and deterioration you can’t see.
Inspections and testing must be carried out by a competent person, which depending on your jurisdiction might be a licensed or registered electrician or a licensed electrical inspector.
If you are a business inspecting and testing will help you meet your WHS duty to ensure electrical equipment is safe.
RCDs—also known as RCCBs or safety switches—are electrical safety devices that immediately switch off the electricity supply when electricity leaking to earth is detected at a level that is harmful to someone using electrical equipment.
You must use an RCD if the electrical equipment used in your workplace is:
- supplied with electricity through a socket outlet (plug-in electrical equipment)
- used in conditions likely to damage or reduce its expected life span.
Overhead and underground electricity lines
Before starting any work near overhead and underground lines, you need to assess the risks and plan how these will be managed:
- heights, sway and sag of lines
- nature, height and shapes of loads
- approach distances and work zones.
- identify cable location, for example if you’re going to repair pot-holes
- talk to asset owners
- use insulated hand tools.
For further information see our General guide for working in the vicinity of overhead and underground electric lines.
Dial Before You Dig
Dial Before You Dig is a free national referral service designed to prevent damage and disruption to the underground asset (pipes and cables) networks that provide Australia’s essential services. These underground assets include electrical cables.
Dial Before You Dig acts as a single point of contact so there is no need to contact individual underground asset organisations to get accurate information about the location of underground electrical cables and other asset networks at your work site.
SWA is not a regulator and cannot advise you about electrical safety. If you need help, please contact the electricity regulator in your state or territory.