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About AS/NZS 5033 ( 2012 ~ 2021 )

What is AS/NZS 5033 ?

The AS/NZS 5033 is the  Australian Standards for the installation of solar panels.

AS/NZS 5033:2021 sets out general installation and safety requirements for electrical installations of PV arrays, including d.c. array wiring, electrical protection devices, switching and earthing provisions.

AS/NZS 5033:2012

The changes to AS5033 relate to wiring, labeling, disconnection devices, earthing, and system documentation and commissioning. In addition to these alterations, the standard  also now includes a number of new definitions that are indicative of the future direction of the industry, such as ‘AC module’, and ‘Micro inverter’. These technologies are still relatively new on the Australian and global markets, but could become a common alternative to the ‘centralised inverter’ style of system that comprises the vast majority of the market.

Interestingly (and relatedly), one of the major changes–the requirement to use heavy-duty conduit around all DC wiring–will raise the difficulty level of the installation of conventional, centralised inverter systems. This change will have virtually no effect on the installation of AC solar systems to the same degree, as the DC wiring in such systems is significantly shorter.

The July 2012 AS5033 standard changes are outlined below. The following can also be downloaded in pdf format here. The same document can be found on the Clean Energy Council’s Solar Accreditation website.

AS/NZS 5033:2012

The standard started in July 2012.

Learn More AS/NZS 5033:2012Download AS/NZS 5033:2012

AS/NZS 5033:2014

Some of the key aspects of the new standard are:

  • Feature 1

    All equipment and wiring shall be selected and installed in accordance with the provisions of AS/NZS 3000 and requirements of this standard (Clause 4.1). Please Note: Inverters must be installed in locations with safe access and adequate working space and be readily available(this does not apply to micro inverters).

  • Feature 2

    PV cabling must be identified with a permanent, indelible marking in English or coloured "SOLAR" labels attached at intervals of not more than 2 meters. When the PV cable is enclosed in conduit or other wiring enclosure a coloured "SOLAR" label must be attached at each end of the wiring enclosure and at each change of direction. (Clause 5.3.1).

  • Feature 3

    All outdoor equipment must be suitable for the environment and be at least IP 54 and UV resistant. (Clause

  • Feature 4

    All PV array switch-disconnectors must be readily accessible (Clause and are to be marked with an identification name or number according to the PV array wiring diagram and have clear indication of isolation position off and on e.g. O and I. (Clause 5.5.1).

  • Feature 5

    Earthing or bonding connections MUST BE arranged so that the removal of a single module earth connection will not affect the continuity of the earthing or bonding connections to any other module. (Clauses &

AS/NZS 5033:2014

The standard started in November 2014.

Learn More AS/NZS 5033:2014

AS/NZS 5033:2018

Members are advised that the DRAFT AS/NZS 5033:2021 Installation and safety requirements for photovoltaic (PV) arrays, is currently open for public comment until 6 May 2021.

The 102 page draft standard will supersede AS/NZS 5033:2014 (inc. Amd 1 & 2) and is available to download from the Standards Australia portal for review.

There are a number of changes in requirements in this revision, which include but are not limited to:

(a) change in the scope of this document with respect to maximum PV array power limit
(b) additions of provisions relating to d.c. conditioning units regarding voltage and current calculations
(c) changes to requirements for overcurrent protection and earthing
(d) changes to methods of PV isolation including for d.c conditioning units
(e) changes to requirements for wiring systems and connector requirements
(f) new signs, verification and commissioning requirements.

Should you wish to submit your feedback to Standards Australia, please do so prior to the close date of 6 May 2021, via the Standards Australia portal

The portal requires a login to access. If you do not already have a Standards Australia login, click on ‘register’- the process is straightforward. Once logged in, the draft can be viewed online and your comments submitted per section.

AS/NZS 5033:2014 Amd 2:2018

Installation and safety requirements for photovoltaic (PV) arrays

To buy from Standards Australia

AS/NZS 5033:2021

The new standard also includes the following changes

  1. The 600V DC limit is being increased up to 1000V DC.
  2. Rooftop Isolators will be replaced with a requirement for a point of disconnect.
  3. 35V DC and above is to be deemed hazardous and all conductor parts that can carry 35V or more will have to have earth alarms.
  4. Cables in ceiling will have to be above 600mm although if the cables have to be within the ceiling and the 600mm they have to be protected by WSX3 rated protection.
  5. Plan view of the building showing the array, the invert and the points of disconnection and should be part of the documentation provided when the system is installed.


Please note that this standard supersedes AS/NZS 5033:2014 on 19/05/2022.

AS/NZS 5033:2021 Installation and safety requirements for photovoltaic (PV) arrays was in effect in NSW last year and has been in effect from May 2022 for the rest of Australia

Deep dive on the new AS/NZS 5033:2021 Updates


AS/NZS 5033:2021 Update – What You Need to Know ?

Are you finding a good manufacturer who supply complianted solar label kit / warning sign ?

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Accredited installers shall comply with the current versions of the following standards:

Standards Description
AS/NZS 3000:2018
Wiring rules
AS/NZS 5033:2014 (amdt 1&2)
Installation and safety requirements for photovoltaic (PV) arrays
AS/NZS 4509.2:2012
Stand-alone power systems – Design
AS/NZS 1170.2:2011
Structural design actions – Wind actions
AS/NZS 4777.1:2016
Grid connection of energy systems via inverters – Installation requirements
AS/NZS 1768:2007
Lightning protection
AS/NZS 3008.1.1:2017
Electrical installations – Selection of cables