And even what is not connected to the system, but nearby. Any radiation from
the system can be capacitively coupled or induced in nearby wiring and
re-radiated. Grounds can be resonant or not resonant. EMC is still magic. 😊
-----Original Message-----
From: RFI <rfi-bounces+w1rfi=arrl.org@contesting.com> On Behalf Of Tony
Sent: Friday, September 25, 2020 6:23 PM
To: Rfi List <rfi@contesting.com>
Subject: [RFI] Question Regarding Variations In Solar Panel RFI?
All:
The reports I've read suggest that the strength of interference caused by solar
panel systems can vary from one installation to the next EVEN when the distance
to the source is similar. That variation could be attributed to radiating
conductors tied to the system such as the house wiring.
We found high levels of RFI on the A/C lines throughout my neighbors home and
that's likely the case with all Solar Edge installations since there are no
chokes between the mains and inverter.
Given those facts, would a large home with long runs of un-shielded Romex
produce higher levels of interference compared to a smaller home with shorter
runs? Or does the resonance of the wiring play more of a role than length and
number of runs?
It's an oversimplification, but it seems logical to consider what's connected
to system and not just the system itself.
Tony -K2MO
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