Questions tagged [cec]

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Smoke detector wiring - black wire in 3 wire appears to be damaged. Can I use power from AFCI circuit to power but use red wire to interconnect?

I have ~10 smoke alarms (one per bedroom, one per hall). Somehow the last one isn't working. The green light didn't go on. I've done some troubleshooting - swapped the connectors and swapped the ...