General Info – Electrical Test & Tag

How Often Should Equipment Be Tested?

Testing intervals vary depending on environment and risk level.

Australian Standards

Compliance with National Standards

Testing conducted in accordance with recognised regulations.

AS/NZS 3760 outlines inspection and testing requirements for electrical equipment.
AS/NZS 3012 governs electrical installations on construction and demolition sites.

Testing intervals may also vary based on individual workplace risk assessments

Testing Frequency Guide

How often electrical equipment
must be inspected and tagged.

Testing intervals vary depending on the environment, level of risk and type of equipment in use. Regular inspection ensures ongoing compliance with Australian Standards and helps maintain a safe working environment.

Every 3 Months

Construction
Demolition
Hire Equipment

Every 6 Months

Factories
Production Facilities
Warehouses

Every 12 Months

Schools
Offices
Office Kitchens
Workplaces where
equipment may be misused

Every 5 Years

Server rooms
Low-risk environments where equipment is not subject to damage or cable flexing

Standard Testing Intervals by Environment

TYPE OF ENVIRONMENT AND/OR EQUIPMENT	TYPE OF ENVIRONMENT AND/OR EQUIPMENT
Manufacturing & Assembly
Factories, workshops, places of manufacture, assembly, maintenance or fabrication	6 Months
Active & Hostile Environments
Environments where the supply flexible cord is prone to flexing during normal use OR is subject to misuse OR is in a hostile environment	12 Months
Equipment used for commercial cleaning	6 Months
Construction & Demolition Sites (Specific standard AS/NZS 3012)	3 Months
Passive & Office Environments
Environments where the supply flexible cord is NOT subject to flexing during normal use and is NOT in a hostile environment	5 Years
Residential / Public Accommodation
Common areas of hotels, motels, boarding houses, residential institutions, halls, hostels, and similar	2 Years
Specific Equipment Types
Hire Equipment	Before each hire (plus regular 3-monthly checks)
Repaired or Serviced Equipment	Must be re-tested after repair before return to service (see AS/NZS 5762)
Second-Hand Equipment	Must be inspected and tested before sale (see AS/NZS 5761)

This table is a simplified overview of the formal inspection and test intervals required by the standard. Always refer to the full text of AS/NZS 3760:2022 Table 2.4 for precise details and to determine the correct application based on a site-specific risk assessment.

Determining Test Frequency
The required interval between inspections depends heavily on the environment and the risk of damage to the equipment.

RCD (Safety Switch) Testing Schedule

RCD Type	User Check (Push-Button Test)	Formal Tripping Time Test
Portable RCDs	3 Months (or before each use)	12 Months
Fixed RCDs	6 Months	12 Months
Used in Manufacturing/Hostile Areas	Refer to site risk assessment	6 Months

Residual Current Devices (RCDs) are vital safety devices and require separate testing. Testing is split into a user check (push-button) and a formal operation test.

Key Takeaways for Compliance

Risk-Based Approach: The intervals in the table are recommended minimums. A risk assessment of your specific workplace may dictate more frequent testing.

The “Hostile” Definition: A hostile environment is one where equipment is exposed to moisture, heat, dust, vibration, corrosive substances, or mechanical damage.

New Equipment: Under AS/NZS 3760, new equipment only requires a visual inspection and tagging with a ‘New to Service’ tag. It will enter the regular testing cycle based on its environment at the appropriate interval.

Understanding AS/NZS 3760:2022:
The Essential Guide to Electrical Safety

Maintaining a safe workplace is not just good practice—it is a core responsibility. The primary standard governing the safety of portable electrical equipment in Australia and New Zealand is AS/NZS 3760:2022. This guide explores the requirements for testing and tagging, legal obligations, and the practical application of these safety protocols.

Are Australian Standards Legally Binding?

While Standards Australia is a non-government, not-for-profit entity, their publications often carry legal weight. Standards serve as a benchmark for safety and reliability. They become “law” when referenced in state or federal legislation.

For instance, under the Electricity (Licensing) Regulations 1991, licensed electricians are legally required to perform work in accordance with specific standards. When legislation uses the term “shall,” compliance with the referenced standard becomes a mandatory legal requirement.

What is the Scope of AS/NZS 3760:2022?

This standard outlines the procedures for the “in-service” safety inspection and testing of single and three-phase electrical equipment connected to a low-voltage supply via a flexible lead. It also covers the testing requirements for Residual Current Devices (RCDs).

Equipment requiring regular testing includes:

New equipment being placed into service for the first time.
Existing equipment already in use in the workplace.
Items returning to service after repair or maintenance.
Second-hand equipment purchased for business use.
Hire equipment.

Items generally excluded from this standard:

Equipment mounted at heights exceeding 2.5 metres.
Complex machinery requiring dismantling for testing (this must be handled by a specialist).
Medical electrical equipment (which falls under separate standards).
Fixed or stationary equipment in non-hostile environments.
Portable generators (governed by AS/NZS 3010).

Defining a "Competent Person"

Under the standard, testing and tagging do not always require a licensed electrician, but they do require a Competent Person. This is defined as someone who possesses the necessary practical and theoretical skills—attained through training, qualifications, or experience—to perform the task safely.

Knowledge requirements include:

Electrical Fundamentals

Understanding AC/DC currents, Amps, Ohms, and Volts.

Testing Procedures

Proficiency in insulation resistance, leakage current, and the safe operation of Test and Tag instruments.

Circuit Protection

Knowledge of fuses, circuit breakers, and RCDs.

Testing Procedures and Equipment Classes

Correctly identifying the “Class” of an appliance is vital for choosing the right test.

Class I (Earthed)

These appliances rely on a combination of basic insulation and a protective earth connection. Accessible metal parts must be bonded to the earth pin.

Class II (Double Insulated)

These tools protect the user through two layers of insulation or reinforced insulation. They do not require an earth connection and are identified by the “square within a square” symbol.

Key Tests Required:

Visual Inspection

Statistically, 90% of defects are found here. This involves checking for frayed cords, damaged plugs, and clear markings.

Earth Continuity

Required for Class I equipment to ensure the resistance between the plug’s earth pin and the appliance’s metal casing is low enough to trip a safety device.

Insulation Resistance

Usually performed at 500V DC (or 250V DC for equipment with surge protection) to ensure the internal insulation hasn’t degraded.

Polarity

Mandatory for cord sets and rewirable plugs to ensure Active, Neutral, and Earth wires are in the correct positions (Active = Brown, Neutral = Blue, Earth = Green/Yellow).

Leakage Current Test

Performed while the device is powered on to measure any “leaking” current that could cause a shock.

RCD Testing and Intervals

Residual Current Devices (Safety Switches) require regular verification.

Push-Button Test

Should be performed every 6 months for fixed units and every 3 months for portable units.

Operating Time (Trip Test)

A formal test to ensure the RCD trips within the required timeframe:

Type I: Max 40ms.

Type II: Max 300ms.

Frequency of Testing

Test intervals are determined by the environment the equipment is used in (often referred to as Table 2.4 in the standard). For construction sites governed by AS/NZS 3012, these intervals are generally more frequent (e.g., 3-monthly) due to the “hostile” nature of the environment.

Documentation and Record Keeping

Maintaining an accurate “Compliance Map” is essential. Records of all inspections and tests must be kept for at least 7 years. These records should include:

Electronic record-keeping is fully acceptable and often preferred for ease of auditing.