{"id":83816,"date":"2024-06-03T11:32:46","date_gmt":"2024-06-03T02:02:46","guid":{"rendered":"https:\/\/www.solarquotes.com.au\/blog\/?p=83816"},"modified":"2024-06-05T11:23:40","modified_gmt":"2024-06-05T01:53:40","slug":"defects-solar-battery-installations","status":"publish","type":"post","link":"https:\/\/www.solarquotes.com.au\/blog\/defects-solar-battery-installations\/","title":{"rendered":"Hidden Defects in Solar Battery Installations: What Inspectors Look For"},"content":{"rendered":"

 <\/p>\n

\"battery<\/p>\n

Solar battery installation inspections are essential. They ensure systems are safe, compliant, and function optimally. While my previous blog outlined the common defects found during battery inspections<\/a>, this instalment will focus on harder-to-spot issues that are often missed.<\/p>\n

As a licensed electrical inspector, I have the training to spot these hidden problems \u2014 defects not always obvious but vital for the safety and operation of solar battery<\/a> installations. Identifying and correcting these issues is crucial as they can significantly influence the system’s performance and safety.<\/p>\n

Let’s examine some of these less noticeable defects that every installer and inspector needs to be aware of.<\/p>\n

Insufficient Mechanical Protection for Cables<\/h2>\n
\"Exposed

Bad:<\/strong> The battery cables (3rd input from the left) are not protected.<\/p><\/div>\n

Overview of the Issue<\/strong><\/h3>\n

In the setup of solar battery systems, the physical protection of cables is not merely a requirement but a necessity for safety. Cables without sufficient mechanical protection are vulnerable to damage from environmental factors and routine maintenance activities. This exposure not only risks the integrity of the cable but can also lead to serious safety hazards, including short circuits and fires.<\/p>\n

Standards Cited<\/strong><\/h3>\n

This issue is addressed under AS\/NZS 5139:2019 CL 5.3.1.4.3, which mandates that cables in certain configurations must be adequately protected to prevent physical damage.<\/p>\n

5.3.1.4.3 Mechanical Protection <\/strong><\/p>\n

All cables that exit a pre-assembled battery system without internal overcurrent protection shall be mechanically protected by at least medium duty conduit or equivalent protection up to overcurrent protection device.<\/p><\/blockquote>\n

Recommendation<\/strong><\/h3>\n
\"Flexible

Good:<\/strong> Cables are protected all the way to the (hidden) battery terminals.<\/p><\/div>\n

To shield cables effectively, I recommend protective conduits or cable covers. This can be a challenge when it comes to aesthetics, but cable trays or custom-made flashing not only protect but also look great.<\/p>\n

However, if opting for metal flashing, it’s crucial to smooth any sharp edges.<\/p>\n

Inadequate Isolation of Battery\/Inverter Systems<\/h2>\n
\"Battery

Bad:<\/strong> Backup circuits are installed, but no isolator is adjacent to the system.<\/p><\/div>\n

Overview of the Issue<\/strong><\/h3>\n

Proper isolation of battery and inverter systems is critical for safety and maintenance when batteries are installed in locations not immediately adjacent to the main switchboard. Effective isolation allows the system to be safely disconnected, ensuring that maintenance personnel or inspectors are not exposed to live circuits during work and complicate both emergency responses and routine checks.<\/p>\n

Standards Cited<\/strong><\/h3>\n

AS\/NZS 4777.1 Cl 3.4.3 specifies the requirements for isolation devices in solar energy systems, ensuring that the main and backup circuits can be effectively isolated when needed.<\/p>\n

Recommendation<\/strong><\/h3>\n
\"Battery

Good:<\/strong> On the left are 2 x AC isolators, one for the backup circuits.<\/p><\/div>\n

It’s also important to ensure the isolator is easily accessible and clearly marked to facilitate quick action in an emergency.<\/p>\n

Earthing and Bonding Concerns<\/h2>\n
\"Earthing

Bad:<\/strong> A 4mm\u00b2 cable connected to a 2.5mm\u00b2 earthing conductor back to the switchboard \u2013 not thick enough.<\/p><\/div>\n

Overview of the Issue<\/strong><\/h3>\n

Proper earthing and bonding are vital in any electrical installation, but they become even more crucial in higher-voltage systems 1<\/a><\/sup>. Inadequate earthing can lead to problems, including electrical shocks, system instability, and fire hazards. For solar battery systems, it is critical that the bonding conductors are sufficiently robust; a minimum cross-sectional area of 6mm\u00b2 is required, not the 4mm\u00b2 commonly used in domestic solar arrays.<\/p>\n

Standards Cited<\/strong><\/h3>\n

The importance of correct earthing practices is underscored in AS\/NZS 5139:2019 CL 5.3.1.7.3 & 5.3.1.7.4, which dictate the specifications for earthing and bonding in solar installations.<\/p>\n

Recommendation<\/strong><\/h3>\n
\"Battery

Good:<\/strong> All earthing provided to the battery is 6mm\u00b2.<\/p><\/div>\n

To ensure safety and compliance, it is imperative that all metal enclosures associated with the battery system are properly bonded and earthed. Installers should strictly adhere to the manufacturer’s guidelines for termination and avoid shortcuts such as self-drilling screws, which may compromise the integrity of the earth connection. Proper termination ensures a secure and reliable connection that meets safety standards and withstands environmental stresses, safeguarding against electrical faults.<\/p>\n

Insulation Deficiencies in Cabling<\/h2>\n

Overview of the Issue<\/strong><\/h3>\n

In our world of solar battery installations, the integrity of cabling insulation is critical to protecting everyone. Insufficient insulation can expose systems to severe electrical hazards, including short circuits and fire risk. It’s crucial that all cabling, especially those leading to battery terminals, is double insulated to prevent these potential threats.<\/p>\n

Standards Cited<\/strong><\/h3>\n

This issue is governed by AS\/NZS 5139:2019 CL 5.3.1.4.2, which stipulates the requirements for cable insulation in battery systems.<\/p>\n

Recommendation<\/strong><\/h3>\n
\"Double-insulated

Good:<\/strong> Double insulation maintained all the way to the battery terminals.<\/p><\/div>\n

To maintain safety and compliance, a rigorous inspection regimen should be implemented to check for insulation integrity. Any cables found with insufficient insulation should be replaced promptly. When installing new cables, ensure they are double-insulated throughout, extending up to the battery terminals. This meets the standard requirements and significantly reduces the risk of electrical failures. It\u2019s advisable for installers to familiarise themselves with the types of insulation suitable for high-voltage setups and to use only products certified for such applications.<\/p>\n

Conclusion<\/h2>\n

The less obvious aspects of battery installation safety are important yet easier to overlook. However, these aspects are essential for long-term reliability and safety. As discussed, proper cable protection, correct isolation of battery systems, secure earthing and bonding, and adequate cable insulation are key areas that need careful attention.<\/p>\n

For those working in solar installation and inspection, paying close attention to these details is important to prevent failures and ensure the systems we install perform well and are safe.<\/p>\n

Keeping up with regular checks, staying updated with the latest standards, and continuing our education in safety practices all have their place. As solar technology advances, we can ensure our installation practices meet the highest standards. It’s our responsibility to make sure every part of the installation is done right for the benefit of our clients and the environment.<\/p>\n

Let\u2019s keep pushing for excellence in every part of our work, ensuring that our solar and battery installations are as safe as possible.<\/p>\n","protected":false},"excerpt":{"rendered":"

  Solar battery installation inspections are essential. They ensure systems are safe, compliant, and function optimally.<\/p>\n","protected":false},"author":34,"featured_media":84180,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[57],"tags":[],"class_list":["post-83816","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-solar-installation","entry"],"acf":[],"yoast_head":"\nHidden Defects in Solar Battery Installations: What To Look For<\/title>\n<meta name=\"description\" content=\"Learn common, hidden defects in Australian solar battery installations with tips from a licensed electrical inspector.\" \/>\n<meta name=\"robots\" content=\"index, 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With experience as a Solar Victoria auditor, CER Inspector, and a background at the Clean Energy Council (CEC), Pat is well-known in the industry. He's a devoted family man, with five children, who enjoys playing park cricket in the summer.","url":"https:\/\/www.solarquotes.com.au\/blog\/author\/pat\/"}]}},"jetpack_featured_media_url":"https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/06\/cabling-to-hybrid-inverter.jpg","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p2FF2s-lNS","jetpack-related-posts":[{"id":84672,"url":"https:\/\/www.solarquotes.com.au\/blog\/what-to-expect-from-your-solar-inspector\/","url_meta":{"origin":83816,"position":0},"title":"What to Expect from Your Solar Inspector","author":"Pat Southwell","date":"July 4, 2024","format":false,"excerpt":"Hi there! I'm Pat Southwell, and I've been a Licensed Electrical Inspector (LEI) in Victoria for nearly three years. If you're a Victorian reader, you're likely aware that all solar installations in our state are inspected. If you're outside Victoria, you might still experience inspections through the Clean Energy Regulator\u2026","rel":"","context":"In "Solar Installation"","block_context":{"text":"Solar Installation","link":"https:\/\/www.solarquotes.com.au\/blog\/category\/solar-installation\/"},"img":{"alt_text":"solar inspector at work","src":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/06\/inspector-expectations.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/06\/inspector-expectations.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/06\/inspector-expectations.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/06\/inspector-expectations.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/06\/inspector-expectations.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":30026,"url":"https:\/\/www.solarquotes.com.au\/blog\/solar-power-system-inspections\/","url_meta":{"origin":83816,"position":1},"title":"How To End Dodgy Solar For Good? 100% Inspections By State Electrical Bodies","author":"Finn Peacock","date":"May 6, 2019","format":false,"excerpt":"This is a guest post by John Inglis, owner of Positronic Solar. John is a veteran of the solar industry. Rumour has it that his involvement predates the invention of the sun dial. Take it away John... We\u2019ve all seen dodgy solar PV installs.\u00a0 In fact, one of the longest-running\u2026","rel":"","context":"In "Solar Installation"","block_context":{"text":"Solar Installation","link":"https:\/\/www.solarquotes.com.au\/blog\/category\/solar-installation\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2019\/05\/100pc-inspections.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2019\/05\/100pc-inspections.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2019\/05\/100pc-inspections.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2019\/05\/100pc-inspections.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2019\/05\/100pc-inspections.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":54504,"url":"https:\/\/www.solarquotes.com.au\/blog\/solar-inspections-victoria-mb2179\/","url_meta":{"origin":83816,"position":2},"title":"Solar Inspections In Victoria Get A Boost","author":"Michael Bloch","date":"October 4, 2021","format":false,"excerpt":"A pilot mentoring program seeks to create a more robust and streamlined solar power system inspection regime in Victoria under the state's Solar Homes program. Solar inspections in Victoria have been problematic in the past as the contractor could pick and choose the inspector - I'm not clear if this\u2026","rel":"","context":"In "General Solar & Storage News"","block_context":{"text":"General Solar & Storage News","link":"https:\/\/www.solarquotes.com.au\/blog\/category\/solar-battery-news\/"},"img":{"alt_text":"Solar inspections - Victoria","src":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2021\/10\/solar-victoria-inspections.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2021\/10\/solar-victoria-inspections.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2021\/10\/solar-victoria-inspections.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2021\/10\/solar-victoria-inspections.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2021\/10\/solar-victoria-inspections.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":80788,"url":"https:\/\/www.solarquotes.com.au\/blog\/battery-installations-insights\/","url_meta":{"origin":83816,"position":3},"title":"Common Battery Installation Issues: Insights from an Electrical Inspector","author":"Pat Southwell","date":"January 3, 2024","format":false,"excerpt":"As home battery systems start to go mainstream, the focus on the safety and compliance of these systems becomes ever more critical. In this post, I will navigate the complexities of grid-connected battery system installations, uncover common challenges installers face, and underscore the pivotal role of the Australian home battery\u2026","rel":"","context":"In "Battery Storage"","block_context":{"text":"Battery Storage","link":"https:\/\/www.solarquotes.com.au\/blog\/category\/battery-storage\/"},"img":{"alt_text":"breakers in a switchboard","src":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/01\/backup-circuits.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/01\/backup-circuits.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/01\/backup-circuits.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/01\/backup-circuits.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":93013,"url":"https:\/\/www.solarquotes.com.au\/blog\/solar-installation-limits-mb3217\/","url_meta":{"origin":83816,"position":4},"title":"Solar And Battery Installers Have Their Limits","author":"Michael Bloch","date":"July 3, 2025","format":false,"excerpt":"With the official launch of the Australian government's home battery subsidy, installers are now really under the pump. But there are hard limits on how many installations they can perform in a day set by the powers that be \u2014 and with good reason. Both the Cheaper Home Batteries program\u2026","rel":"","context":"In "General Solar & Storage News"","block_context":{"text":"General Solar & Storage News","link":"https:\/\/www.solarquotes.com.au\/blog\/category\/solar-battery-news\/"},"img":{"alt_text":"Solar battery being installed.","src":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2025\/07\/solar-installation-limits.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2025\/07\/solar-installation-limits.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2025\/07\/solar-installation-limits.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2025\/07\/solar-installation-limits.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2025\/07\/solar-installation-limits.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":79476,"url":"https:\/\/www.solarquotes.com.au\/blog\/solar-inspections-nsw\/","url_meta":{"origin":83816,"position":5},"title":"Make Solar Inspections Mandatory In NSW Before Tragedy Unfolds","author":"Pat Southwell","date":"October 24, 2023","format":false,"excerpt":"There's a big problem in Australia's solar world. Despite ACT, TAS, and VIC inspecting all new rooftop solar power system installations, NSW, SA, WA and QLD don't - and that's playing with fire. 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