Hey everyone! I'm currently setting up an EG4 6000xp system with some solar panels, and I was about to add an extra PV disconnect switch outside the inverter. However, I came across a video from the UK where they mentioned that some insurance companies advise against having external disconnects. I'm curious to hear your thoughts on this! I'm fine with using just the internal disconnect for safety reasons, but I also like the idea of having the option to disconnect my solar panels when I'm working on the system. What do you all think?
3 Answers
Do you have rapid shutdown devices with your panels? If you do, you can trigger a shutdown right at the inverter, which will stop panel output. I opted for an emergency stop button outside, wired to my hybrid inverter, that shuts everything down, including the panels. I skipped the DC isolator switches since I heard about an increase in fires in Australia after they became mandatory; it's definitely something to consider.
There are definitely high-quality outdoor solar disconnects out there, like the VH361RB, but they can be pretty pricey. Unfortunately, solar fuses aren't cheap either, which adds to the overall cost.
I'd love to hear the reasoning behind their stance against external disconnects. In the U.S., it's actually required by code to have them for safety, especially for firefighters dealing with emergencies involving solar systems. I have a set of IMO branded DC solar switches, which I think are pretty reliable since they're made in the UK.