Electrical Safety in Commercial Buildings

What You’re Required to Test, What You’re Expected to Manage, and Why It Matters

Electrical safety in commercial buildings is often misunderstood as a simple compliance exercise — a series of tests done to satisfy a standard or tick a regulatory box. In reality, electrical safety is a layered system of mandatory requirements, risk-based obligations, and duty of care responsibilities that apply across Australia.

This article summarises four critical areas of electrical safety in commercial buildings:

Emergency lighting
Residual Current Devices (RCDs)
Appliance testing (“test and tag”)
Thermal imaging of switchboards

For each, we explain what is required, who is responsible, and the implications of getting it wrong.

What governs emergency lighting?

Emergency lighting is governed by AS/NZS 2293, specifically Part 2, which covers routine inspection, testing and maintenance.
Emergency lighting requirements are typically enforced through:
• the National Construction Code (NCC), and
• state and territory fire safety legislation.
In most commercial buildings, emergency lighting is classified as a prescribed or essential fire safety measure.

What is required?

Emergency lighting systems must be:
• routinely inspected,
• functionally tested, and
• subjected to periodic discharge testing (commonly six-monthly).
Importantly, testing is not compliant unless it is recorded.

Responsibility

The building owner or person with control of the building is ultimately responsible for ensuring testing is carried out and recorded. While testing can be outsourced, legal responsibility cannot be delegated.

Records and logbooks

AS/NZS 2293.2 requires that:
• records of tests, inspections, faults and rectifications are kept, and
• records are kept on site or be readily accessible from the site.
In practice, if records cannot be produced during an inspection, the test is treated as not having been done, regardless of whether it actually occurred.

What governs RCD testing?

RCD testing requirements depend on the type of RCD involved.
Portable RCDs and plug-connected equipment are generally covered by AS/NZS 3760, which sets out inspection and testing requirements for in-service electrical equipment.
Permanently installed RCDs within commercial electrical installations are primarily governed by:
• AS/NZS 3000 (Wiring Rules), and
• AS/NZS 3017 (verification testing of electrical installations). Construction and demolition site RCDs may additionally fall under AS/NZS 3012, which imposes stricter testing and verification requirements due to the higher-risk environment.
RCD testing obligations ultimately arise through workplace health and safety (WHS) legislation and the duty to maintain electrical installations in a safe condition.
RCD testing obligations arise through:
• workplace health and safety (WHS) legislation, and
• the duty to maintain electrical installations in a safe condition.

What is required?

RCD testing requirements depend on the type of RCD involved.
Portable RCDs and plug-connected equipment are generally covered by AS/NZS 3760, which sets out inspection and testing requirements for in-service electrical equipment.
Permanently installed RCDs within commercial electrical installations are primarily governed by:
• AS/NZS 3000 (Wiring Rules), and
• AS/NZS 3017 (verification testing of electrical installations).
Construction and demolition site RCDs may additionally fall under AS/NZS 3012, which imposes stricter testing and verification requirements due to the higher-risk environment.
RCD testing obligations ultimately arise through workplace health and safety (WHS) legislation and the duty to maintain electrical installations in a safe condition.

Records and availability

Applicable standards, including AS/NZS 3760, AS/NZS 3000, AS/NZS 3017 and AS/NZS 3012 (where applicable), require that:
• inspection and test results are recorded, and
• records are retained and retrievable.
For permanently installed RCDs, records should demonstrate:
• the RCD tested,
• the type of test performed,
• test dates,
• trip-time or operational results,
• defects identified, and
• rectification actions taken.
From a regulator’s perspective:
If RCD test records cannot be produced on request, the RCD may be treated as untested. Keeping records solely with a contractor or head office is not sufficient if they cannot be accessed when required.

Responsibility

Responsibility sits with the PCBU (Person Conducting a Business or Undertaking) or the entity in control of the workplace or equipment. Again, contractors perform testing, but accountability remains with the duty holder.

What governs appliance testing?

Appliance testing is also governed by AS/NZS 3760 and applies to portable and plug-in electrical equipment used in workplaces.
While AS/NZS 3760 is not legislation, it is the recognised method for demonstrating compliance with WHS duties to ensure electrical equipment is safe.

Is appliance testing mandatory?

There is no single blanket rule (such as “everything must be tested annually”). Instead, AS/NZS 3760 uses a risk-based approach, with test intervals depending on:
• environment,
• type of equipment, and
• likelihood of damage.
High-risk environments (workshops, kitchens, industrial settings) require more frequent testing than low-risk office environments.

Tags and records

Appliances must be:
• identifiable (commonly via tags), and
• supported by test records showing inspection and test results.
Tags alone are not sufficient — records must exist and be retrievable.
As with other electrical safety activities:
If records cannot be produced, the appliance is treated as untested.

Responsibility

Responsibility lies with the PCBU or organisation supplying or controlling the equipment. This includes employers, building owners (where appliances are provided), and managing agents.

Is thermal imaging mandatory?

No Australian Standard or law explicitly mandates thermal imaging of switchboards.
However, this does not mean it is optional from a risk or liability perspective.

Where thermal imaging fits

Thermal imaging arises from:
• general electrical safety duties,
• WHS legislation,
• common law duty of care, and
• insurance risk management expectations.
Thermal imaging is widely recognised as a reasonably practicable control for detecting electrical faults such as:
• loose connections,
• overloads,
• phase imbalance, and
• failing components.
These are known causes of electrical fires in commercial buildings.

Implications of not conducting thermal imaging

On its own, failure to perform thermal imaging does not automatically constitute non-compliance.
However, following an electrical fire or incident, investigators will ask:
Was the risk foreseeable, and were reasonably practicable steps taken to manage it?
In many commercial buildings, periodic thermal imaging is considered a low-cost, industry-accepted risk control. Its absence can significantly increase exposure to:
• regulatory action,
• civil liability, and
• insurance disputes.

Records and evidence

While not mandatory, retaining thermal imaging reports and documenting rectification actions provides powerful evidence that electrical risks were actively managed.

Penalties and consequences (Australia-wide)

Australian Standards themselves do not set penalties. Consequences arise through:

WHS legislation,
fire safety legislation,
building regulations,
insurance conditions, and
civil liability.

Depending on the circumstances, consequences for failing to manage electrical safety can include:

improvement or prohibition notices,
fines,
invalidated fire safety certifications,
insurance claim denial or reduction,
civil claims for damages, and
in extreme cases involving serious injury or death, criminal prosecution.

The severity depends on:

the level of risk,
whether the failure was systemic,
whether records existed, and
whether reasonable steps were taken.

The common thread

Across all four areas, one principle consistently applies:

If you cannot demonstrate that safety activities were carried out, the law treats them as not having occurred.

Testing, inspection and maintenance are only defensible when supported by clear, accessible records.

Final takeaway

Emergency lighting, RCD testing and appliance testing involve clear, well-established requirements. Thermal imaging, while not prescribed, plays a critical role in demonstrating proactive risk management.

For commercial building owners and managers, electrical safety is no longer just about compliance — it’s about being able to prove that risks were identified, controlled and documented.

That’s where asset visibility, record integrity and defensible maintenance programs make the difference.

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