On Friday 28 February 2020, a second year apprentice plumber was involved in repairs to the roof of an awning at a commercial premise in suburban Melbourne.
During the work he inadvertently made contact with an electrical cable and received an electric shock. Our investigation found the cable insulation was in a deteriorated condition.
The cable had bare exposed sections that were alive at 230 volts. The injured worker was taken to hospital and kept overnight to monitor his condition.
In many suburbs power companies mount their low voltage aerial bundled cables to the fascia of the building above awnings and these are connected to the customer’s cables.
Due to age and weathering, some cables may have deteriorated insulation that could result in exposed cables.
Exposed live cables create the potential for a person to receive an electric shock, sustain burns, or result in a fatality.
What to do
When planning work
- Identify the scope of works and assess the work area for electrical cables. If you are unsure if the cables are electrical, engage a registered electrical contractor (REC) to help with identification.
- Visually check work area for any cables to ensure they appear to be in good condition and that there are no exposed connections or cables.
- Before commencing any work near electrical cables you must manage the hazard of electricity.
When accessing roofs and awnings
- Report any bare or exposed cables to the relevant power company or an REC.
- Maintain exclusion zone distance: workers must not come closer to live electrical cables than the following minimum distances. This also includes any tools, equipment or material they may be holding.
- Insulated low voltage cables - 100 mm
- Bare or exposed low voltage cables - 1500 mm
- Obtain written permission from the power company if work is required near electricity cabling and there is a need to enter into, or potential to enter the exclusion zone.
- No temporary covering is to be applied by persons other than power company personnel.
For additional information about working near power cables, No Go Zones and to identify your power company please see this information.
Date: 28/09/2023 22:26
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Reviewed 02 February 2023