Array components

Question and rating	Relevant standards and references
Roof 1 Is the PV array mechanically installed to comply with manufacturer’s installation instructions (for example, foot spacing, fixing type, end clamps, etc) and is in compliance with manufacturer’s engineering certification and AS/NZS 1170.2 and may present a hazard to person or property? Applicable rating: Needs rectification	AS/NZS 5033:2021 Clause 4.3.2.2.5 AS/NZS 1170.2:2021
Roof 20 Is the PV array securely installed to manufacturer’s installation instructions, (for example, fixing type, clamping zones, mid clamps, etc), and in compliance with manufacturers engineering certification and AS/NZS 1170.2 and does not present a hazard to person or property? Applicable rating: Improvements identified (For information)	AS/NZS 5033:2021 Clause 4.3.2.2.6.
Roof 2 Are PV Module mounting frames, and the methods used for attaching PV Modules to frames and frames to buildings made from corrosion resistant materials? Applicable rating: Improvements identified (For information)	AS/NZS 5033:2021 Clause 4.3.2.2.8
Roof 3 Have all roof tiles been installed so they sit flat after the installation of tile mounting brackets to ensure the tiles maintain their original ingress protection? Note: There may be a requirement to grind the underside of the tile to enable it to sit correctly. Applicable rating: Needs rectification	SAA requirements V1.2 Clause 5.1.3 AS/NZS 5033:2021 clause 4.3.2.2.1 and 4.4.5.1
Roof 24 Where the PV array cable and conduit passes through a tile or steel roof, has a fit for purpose collar flashing been installed? (for example, dektite), and has it been installed to last the lifetime of the system? Applicable rating: Needs rectification	SAA requirements V1.2 Clause 5.3.1 AS/NZS 5033:2021 clause 4.3.2.2.1 and 4.4.5.1
Roof 25 Have all cables and cable enclosures (including any penetrations) been installed so they do not obstruct natural water drain paths or promote the accumulation of debris? Applicable rating: Needs rectification	AS/NZS 3000:2018 clause 3.10.3.1 AS/NZS 5033:2021 clauses 4.3.2.3.1 (f) and 4.4.5.1 (b)
Roof 6 Do all PV DC Array cables conform to these requirements: insulated and sheathed UV resistant cables have been used? cables have been protected from mechanical damage? cables have been clamped to prevent undue strain on connections/terminations? cables do not lie on roofs? cables do not obstruct the natural flow of water or promote accumulation of debris? plastic cable ties shall not be used as the primary method of support? cables shall be protected against abrasion, tension, compression and cutting forces that may arise from thermal cycles, wind and other forces? cables have been supported so they do not suffer fatigue due to wind/snow effects? Applicable rating: Improvements identified (For information)	AS/NZS 5033:2021 Clause 4.3.2.3.1
Roof 7 Are all conduits exposed to sunlight adequately installed and protected from UV or UV rated? Applicable rating: Improvements identified (For information)	AS/NZS 5033:2021 Clause 4.4.4.1
Roof 8 Is the DC array wiring and wiring to inverter rated for the appropriate voltage and current? Applicable rating: Needs rectification	AS/NZS 5033:2021 Clause 4.4.2.1
Roof 9 Are all joints in cables enclosed in junction boxes comply with the exceptions of AS/NZS3000 Clause 3.7.3? Applicable rating: Improvements identified (For information)	AS/NZS 3000 Clause 3.7.3 and 3.7.2.8
Roof 21 Is all PV DC wiring located in a ceiling space between nonadjacent groups of PV modules, not installed within 0.6m above the ceiling surface if further than 1.5m from the internal surface of an external wall? Applicable rating: Needs rectification	AS/NZS 5033:2021 Clause 4.4.5.2.4 (a)
Roof 22 Is all PV DC wiring located in a ceiling space between nonadjacent groups of PV modules, attached to the roof structure if installed between 1 and 1.5m of an external wall and less than 0.6m above the surface of the ceiling? Applicable rating: Needs rectification	AS/NZS 5033:2021 Clause 4.4.5.2.4 (b)
Roof 15 Do all PV Array DC cables conform to these requirements: conforms to IEC 62930 where not installed underground? suitable for DC applications? has a temperature rating appropriate for the application? if exposed to the environment, is IV-resistant, or is protected from UV light by appropriate protection? cables directly terminated to plugs, socket and connectors are class 5 (flexible) in accordance with IEC 60228? Applicable rating: Needs rectification	AS/NZS 5033:2021 Clause 4.4.2.1
Roof 17 Where the calculated PV DC circuit maximum voltage is greater than 35V, have the following exposed conductive parts earthed with an impedance of less than 0.5 ohms: all conductive PV module frames? array mounting frames that are directly in contact with the PV DC cables? conductive cable support systems or conductive wiring enclosures that are directly in contact with PV DC cables? if above 0.5-ohm impedance is recorded, has a voltage greater than 5Vac been measured between main earth and the conductive material using a low impendence meter? Applicable rating: Unsafe	AS/NZS 5033:2021 Clause 4.6.2 and 4.6.5 AS/NZS 3000:2018 Clauses 5.6.2.1(e) and 7.3.6
Roof 17.1 Where the calculated PV DC circuit maximum voltage is greater than 35V, have the following exposed conductive parts earthed with an impedance of less than 0.5 ohms: all conductive PV module frames? array mounting frames that are directly in contact with the PV DC cables? conductive cable support systems or conductive wiring enclosures that are directly in contact with PV DC cables? Applicable rating: Needs rectification	AS/NZS 5033:2021 Clause 4.6.2 and 4.6.5 AS/NZS 3000:2018 Clauses 5.6.2.1(e) and 7.3.6
Roof 18 All earthing cables for the frame earth connections are of adequate size to comply with standards. Applicable rating: Improvements identified (For information)	AS/NZS 5033:2021 Clause 4.6.5
Roof 19 Do the PV array frame and module earthing connections and methods comply with Australian Standards (AS/NZS3000:2018 and AS/NZS5033:2014)? Applicable rating: Improvements identified (For information)	AS/NZS 5033:2021 Clause 4.6.3 AS/NZS 3000:2018 Clause 3.7.2.6

Question and rating

Relevant standards and references

Roof 1
Is the PV array mechanically installed to comply with manufacturer’s installation instructions (for example, foot spacing, fixing type, end clamps, etc) and is in compliance with manufacturer’s engineering certification and AS/NZS 1170.2 and may present a hazard to person or property?

Applicable rating: Needs rectification

AS/NZS 5033:2021 Clause 4.3.2.2.5

AS/NZS 1170.2:2021

Roof 20
Is the PV array securely installed to manufacturer’s installation instructions, (for example, fixing type, clamping zones, mid clamps, etc), and in compliance with manufacturers engineering certification and AS/NZS 1170.2 and does not present a hazard to person or property?

Applicable rating: Improvements identified (For information)

AS/NZS 5033:2021 Clause 4.3.2.2.6.

Roof 2
Are PV Module mounting frames, and the methods used for attaching PV Modules to frames and frames to buildings made from corrosion resistant materials?

Applicable rating: Improvements identified (For information)

AS/NZS 5033:2021 Clause 4.3.2.2.8

Roof 3
Have all roof tiles been installed so they sit flat after the installation of tile mounting brackets to ensure the tiles maintain their original ingress protection?

Note: There may be a requirement to grind the underside of the tile to enable it to sit correctly.

Applicable rating: Needs rectification

SAA requirements V1.2 Clause 5.1.3

AS/NZS 5033:2021 clause 4.3.2.2.1 and 4.4.5.1

Roof 24
Where the PV array cable and conduit passes through a tile or steel roof, has a fit for purpose collar flashing been installed? (for example, dektite), and has it been installed to last the lifetime of the system?

Applicable rating: Needs rectification

SAA requirements V1.2 Clause 5.3.1

AS/NZS 5033:2021 clause 4.3.2.2.1 and 4.4.5.1

Roof 25
Have all cables and cable enclosures (including any penetrations) been installed so they do not obstruct natural water drain paths or promote the accumulation of debris?

Applicable rating: Needs rectification

AS/NZS 3000:2018 clause 3.10.3.1

AS/NZS 5033:2021 clauses 4.3.2.3.1 (f) and 4.4.5.1 (b)

Roof 6
Do all PV DC Array cables conform to these requirements:

insulated and sheathed UV resistant cables have been used?
cables have been protected from mechanical damage?
cables have been clamped to prevent undue strain on connections/terminations?
cables do not lie on roofs?
cables do not obstruct the natural flow of water or promote accumulation of debris?
plastic cable ties shall not be used as the primary method of support?
cables shall be protected against abrasion, tension, compression and cutting forces that may arise from thermal cycles, wind and other forces?
cables have been supported so they do not suffer fatigue due to wind/snow effects?

Applicable rating: Improvements identified (For information)

AS/NZS 5033:2021 Clause 4.3.2.3.1

Roof 7
Are all conduits exposed to sunlight adequately installed and protected from UV or UV rated?

Applicable rating: Improvements identified (For information)

AS/NZS 5033:2021 Clause 4.4.4.1

Roof 8
Is the DC array wiring and wiring to inverter rated for the appropriate voltage and current?

Applicable rating: Needs rectification

AS/NZS 5033:2021 Clause 4.4.2.1

Roof 9
Are all joints in cables enclosed in junction boxes comply with the exceptions of AS/NZS3000 Clause 3.7.3?

Applicable rating: Improvements identified (For information)

AS/NZS 3000 Clause 3.7.3 and 3.7.2.8

Roof 21
Is all PV DC wiring located in a ceiling space between nonadjacent groups of PV modules, not installed within 0.6m above the ceiling surface if further than 1.5m from the internal surface of an external wall?

Applicable rating: Needs rectification

AS/NZS 5033:2021 Clause 4.4.5.2.4 (a)

Roof 22
Is all PV DC wiring located in a ceiling space between nonadjacent groups of PV modules, attached to the roof structure if installed between 1 and 1.5m of an external wall and less than 0.6m above the surface of the ceiling?

Applicable rating: Needs rectification

AS/NZS 5033:2021 Clause 4.4.5.2.4 (b)

Roof 15
Do all PV Array DC cables conform to these requirements:

conforms to IEC 62930 where not installed underground?
suitable for DC applications?
has a temperature rating appropriate for the application?
if exposed to the environment, is IV-resistant, or is protected from UV light by appropriate protection?
cables directly terminated to plugs, socket and connectors are class 5 (flexible) in accordance with IEC 60228?

Applicable rating: Needs rectification

AS/NZS 5033:2021 Clause 4.4.2.1

Roof 17
Where the calculated PV DC circuit maximum voltage is greater than 35V, have the following exposed conductive parts earthed with an impedance of less than 0.5 ohms:

all conductive PV module frames?
array mounting frames that are directly in contact with the PV DC cables?
conductive cable support systems or conductive wiring enclosures that are directly in contact with PV DC cables?
if above 0.5-ohm impedance is recorded, has a voltage greater than 5Vac been measured between main earth and the conductive material using a low impendence meter?

Applicable rating: Unsafe

AS/NZS 5033:2021 Clause 4.6.2 and 4.6.5

AS/NZS 3000:2018 Clauses 5.6.2.1(e) and 7.3.6

Roof 17.1
Where the calculated PV DC circuit maximum voltage is greater than 35V, have the following exposed conductive parts earthed with an impedance of less than 0.5 ohms:

all conductive PV module frames?
array mounting frames that are directly in contact with the PV DC cables?
conductive cable support systems or conductive wiring enclosures that are directly in contact with PV DC cables?

Applicable rating: Needs rectification

AS/NZS 5033:2021 Clause 4.6.2 and 4.6.5

AS/NZS 3000:2018 Clauses 5.6.2.1(e) and 7.3.6

Roof 18
All earthing cables for the frame earth connections are of adequate size to comply with standards.

Applicable rating: Improvements identified (For information)

AS/NZS 5033:2021 Clause 4.6.5

Roof 19
Do the PV array frame and module earthing connections and methods comply with Australian Standards (AS/NZS3000:2018 and AS/NZS5033:2014)?

Applicable rating: Improvements identified (For information)

AS/NZS 5033:2021 Clause 4.6.3

AS/NZS 3000:2018 Clause 3.7.2.6

Updated 17 March 2026