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[Brian H]

I saw the on the Cocoontech Forums.
http://cocoontech.com/forums/topic/28223-new-solar-installation-now-x10-line-noise-problems/

Seems certain micro inverters on the panels. Send their data back to their data Hub. At zero crossing. Exactly where X10 and Insteon do their timing.

[dhouston]

Wow! That's a lot of silliness and X10 ignorance displayed in that thread. It's why I never visit that forum.

Interestingly, this did not appear to be one of the "noise turns into an X10 signal" threads as there were no reported X10 signals logged.

This appears to have been an instance of a very old issue where noise spikes can operate directly on the output circuitry of the microcontroller used in the vulnerable X10 devices. There's a discussion here...http://davehouston.org/noise.htm

[Brian H]

I don't believe anyone had the ability to actually look at the power lines and see if it was plain noise or something else.

[dhouston]

I don't believe anyone had the ability to actually look at the power lines and see if it was plain noise or something else.

The individual who had the problem wrote this in his first post...

I know it's not a clean X10 signal as Homeseer isn't showing that the deices should be on.

[Noam]

Sorry for not chiming in sooner (I was busy, and haven't checked the X10 forums for a little while).
I can tell you that I haven't seen any problems from my 15.25 kW solar panel installation (I got them free through SolarCity, you can PM me if you want more information about that).
They have been up and running for 15 months now, and I haven't noticed a single X10-related issue.