NCSTATE78

I have one powerwall and one expansion pack. If your powerwalls are in series, you'll only need one filter, but if they're in parallel, each with their own breaker at the gateway, then yes, you'll need one filter per powerwall. https://www.ebay.com/itm/387726138263

They did not. I'm grateful for that. $1k is about 18 switches in parts alone; I have many more than that installed, so the filter definitely makes sense in my case, even if I had to pay for it. Hopefully, Tesla will engineer this filtering into the powerwall3 directly.

They were not. SunVena Solar installed solar and powerwall… and knew to install this filter when I described the power line communication issues we had with Insteon. They’re one of the preferred installers referred by Tesla’s website for Tampa, FL. It’s so nice to have programs working again!

Hi All, I also have a powerwall3 and extensive insteon installation. I was also suffering from Insteon comms issues as soon as they installed powerwall. Turning the side switch off and forcing the system to grid power allows insteon to communicate normally, so I knew it was the powerwall being noisy. I found that my installer did not install the large ferrite core around the power lines in the powerwall. They came back and installed the core, but it did nothing to help Insteon. Their plan B was to install an in-line filter. They installed the Enphase filter (pictured below) between the powerwall and breaker in the gateway outside and... Insteon communicates without issue! For me, at least, this filter solved the problem. Powerwall3 and Insteon are finally cohabitating in harmony.