I used to have computer, laser printer and a powerline adapter off the same outlet in the same room with no issues. I added recessed lights in the room, and now this trips the circuit breaker. The trip is not immediate and when I isolated the trigger in stages, I found that adding the powerline adapter as the last item (on circuit) triggered a trip. Is there something in the LED bulb circuit which would interact with the powerline adapter in such a way as to trigger a trip?

The installation is tied to a AFCI breaker: Siemens AFCI type QAF issue 1047 The breaker is from 2010. Do I need to replace the breaker and if yes what model?

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    Is this a standard breaker, a GFCI, or an AFCI? What make and model is it? – ThreePhaseEel Jan 11 '18 at 1:00
  • Siemens AFCI breaker from 2010. Tyoe QAF issue 1047. – Jimmy Jan 11 '18 at 1:57
  • Well, you're married to AFCI breakers listed to go in Siemens panels. You can't swap any old brand, even if they semi-fit. I'm not surprised an AFCI and a powerline network adapter wouldn't play nice. Why do you have AFCI? Do you also have real grounding? For that matter, is there an issue preventing you from using WiFi? – Harper Jan 11 '18 at 3:07
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    Can you swap the AFCI for a newer Siemens unit with the indicator LEDs on it (I believe that's the primary change from a QAF to a QAF2 type?) – ThreePhaseEel Jan 11 '18 at 3:18

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