I'm planning to DIY a solar installation around 7kW using the Solax G4 series inverter, which allows up to 200% oversizing. If I buy a 5kW G4 inverter and set the software to restrict the export to 3.6kW, would that be compliant with a G98 application? Is it straightforward to make this restriction in the settings? I'm concerned about future-proofing since there's talk about the 3.6kW limit possibly being raised, and the cost difference isn't much. Has anyone tried this approach, and was it accepted for G98? Cheers!
3 Answers
Hey! So, if you’re in the UK, be aware that doing a DIY installation can be tricky since an electrician needs to handle the AC side of things and sign everything off due to regulations. While the Solax setup you mentioned is indeed certified for G99/G100, your inverter needs to accurately limit the exports as per safety standards. Generally, hitting the higher 5kW isn't too hard, depending on your location and the specific certifications of your equipment. Just make sure you check that everything is compliant before going ahead!
I’ve successfully set up my own system, and while it’s tricky, tons of people are doing it. My advice is to keep things off the main building structure, like installing on a shed or a ground mount to avoid most headaches. I did get help from an electrician for important connections and inspections, which really streamlined the process. Just be smart about it and double-check everything will meet local regulations!
Absolutely agree! Working on small structures avoids much of the regulatory paperwork, and it's great that you managed the major connections with an electrician. It definitely helps to have a solid understanding before jumping in!
You definitely can’t just cap the exports if you're using a higher-rated inverter on G98. You’ll be required to fill out a G100 form to ensure the right export limiting is in place. Also, realize that without a certified electrician and MCS involved, you won't benefit financially from any power you export. If you've done your homework and understand electrical safety, though, you could manage a decent DIY install that complies with the rules!
I agree! I’ve seen folks bend the rules a bit, but it’s risky. With proper checks, it's not impossible to DIY a safe setup. Just ensure you know how to get the export limiting features correctly set up!