How a faulty PE cell and outdated protection impacted a strata property’s lighting and safety

Ferguson Electrical was recently engaged by a body corporate in Carrum to investigate an issue with external common area lighting remaining on during the day.
Tenants had reported the issue over several days, raising concerns around energy usage and reliability of the lighting system.
After attending site and assessing the circuit, we identified the likely cause as a faulty photoelectric cell (PE cell).
PE cells are responsible for controlling lighting based on daylight levels. When functioning correctly, they switch lights on at dusk and off during the day. When they fail, lights may remain permanently on or off.
In this case, the failure resulted in lights staying on continuously.
To resolve the issue and restore proper functionality, we recommended:
This repair ensures the lighting system operates as intended and reduces unnecessary energy consumption.
During inspection of the common area lighting circuit, we also identified an opportunity to improve electrical safety.
We recommended upgrading the circuit protection to include an RCBO (Residual Current Circuit Breaker with Overcurrent Protection).
For shared areas accessed by residents and visitors, electrical safety is critical.
An RCBO provides:
Upgrading to RCBO protection significantly reduces risk and brings older installations closer to current safety expectations.
Ferguson Electrical regularly works with:
Providing:
We understand the importance of reliable, safe and compliant electrical systems in shared residential environments.
If you’re managing a property and experiencing issues with lighting or electrical systems, or want to improve safety across your site, our team can help.
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We deliver quality-first electrical solutions across Melbourne’s south-east — trusted by families, NDIS providers, and schools. Whether it’s your home, workplace, or supported living space, Ferguson Electrical is here to raise the standard with care, transparency, and ambition behind every job.