When it comes to solar panel installations on residential properties, one component often overlooked is the solar DC isolator. While homeowners typically focus on selecting the right panels and inverters, the solar DC isolator is just as critical in ensuring a safe and efficient system.
This blog post will explore the importance of a solar DC isolator and why every homeowner should consider one in their solar setup.
What is a solar DC isolator, and do you need one?
The solar DC isolator is responsible for disconnecting the panels from the inverter and the rest of the electrical system in case of an emergency or maintenance.
In 2021, the Standards Australia Committee updated the Australian solar installation standard AS/NZS 5033 to remove the mandate for installing DC isolators on household solar systems if other safety measures were followed. While it is not required by law, here are two reasons we still recommend you have one.
- Safety
In the event of a fire or other electrical hazards, a solar DC isolator ensures that the electrical current is turned off. A high-quality solar DC isolator will also include overvoltage and undervoltage protection, ensuring the panels operate within a safe range of voltages. - Efficiency
Another reason why the solar DC isolator is important is efficiency. By disconnecting the panels from the rest of the system when not in use, a solar DC isolator reduces the power loss due to the electrical wires’ inherent resistance. This means that the electrical current produced by the panels is not wasted and can be used to power your home.
What to keep in mind when choosing solar DC isolator.
- Quality
The quality of the DC isolator is critical in ensuring its safety and efficiency. Cheap, low-quality DC isolators may fail to disconnect the panels in an emergency, making systems more vulnerable to fires and faults.
It’s critical to select a solar DC isolator from a reputable manufacturer that has been tried and tested by solar experts. - Regular Maintenance
Regular maintenance is also key. Booking regular checks of your solar system, which includes checking your solar DC isolator, will allow you to identify and fix any issues, so you can continue to get the maximum power benefits from your solar system.
Regular maintenance is also key. Booking regular checks of your solar system, which includes checking your solar DC isolator, will allow you to identify and fix any issues, so you can continue to get the maximum power benefits from your solar system.
