Wiring and Repairing Smoke Detectors

Summary: How to Wire and Repair Smoke Detectors - Installation Guide with Photos that Explain Smoke Detector Wiring and Repairs.

Install and Repair Smoke Detectors
	Wiring Smoke Detectors How to Install and Wire Smoke Detectors - Installation Guide with Photos that clearly explain how Interconnected Smoke Detectors are wired so they function properly. How to Wire Smoke Detectors Smoke Detector Tips Installing Smoke Detectors Smoke Detector Wiring Adding Smoke Detectors Smoke Detectors That Alarm
Components for Wiring and Repairing Smoke Detectors
	Electrical Junction Boxes Understanding electrical junction-boxes. Selecting the right size electrical junction box. Junction boxes for outlets, light fixture and electrical splices.
	Electrical Wire Understanding electrical wire. Selecting the right size and type of electrical wire. Electrical wire for outlets, light fixture and large electrical appliances. Parts used to terminate, bond and splice electrical wire.
	Electrical Troubleshooting The Secrets of Successful Electrical Troubleshooting. Methods used to solve most home-electrical problems. Identifying electrical wiring failures.

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Home Electrical Wiring

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Complete Guide to Home Electrical Wiring
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Methods for Home Electrical Wiring
Wiring Diagrams for Smoke Detectors
Interconnected Smoke Detector Wiring
Wiring Methods for AFCI Circuits
Electrical Codes for Smoke Detectors
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Questions about Smoke Detectors

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Questions about Wiring Smoke Detectors

Question from Mike, an Electrician from Patchogue, New York:

Can the carbon monoxide alarm be connected to the smoke detectors in series and be the last on the line? I haven’t been on the job for a few years and I just want to make sure that is how it is done again. I know the smoke detectors are in series, but I forget if the carbon monoxide can be connected to it as well.

Dave’s Answer:

Many local areas require permanently installed carbon monoxide detectors with battery backup which are used to detect odorless gas which could be fatal. Check with your local building jurisdiction for the specific requirements, and if combining the circuit wiring of carbon monoxide detectors and smoke detectors is permitted.
Citation Reference: NEC NFPA 72 Article Section 29.5

Question from Mike, a Homeowner from Twin Falls, Idaho:

I want to install smoke alarms. Can I use 14/3 wire or do I have to use 12/3?

Dave’s Answer:

Smoke alarms may be wired from a circuit using 14/3 wire.

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