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Wiring and Repairing Smoke Detectors


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

Install and Repair Smoke Detectors

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Components for Wiring and Repairing Smoke Detectors

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Electrical Wiring Tips for Home Electrical Wiring Projects

Tripping Circuit Breaker, Outlet at a Wall Switch, Light Fixture without a Ground Wire, Help with Home Electrical Wiring Projects.

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


Recent Questions and Comments


How to Test and Repair a Smoke Detector Circuit

How to Repair Smoke Detector Wiring Problems: Hardwired Smoke Detectors with Battery Back Up, Testing and Troubleshooting a Hardwired Smoke Detector Circuit.

Electrical Safety for Old Home Electrical Wiring

I just moved into an OLD house, can I plug a 1200 watt appliance into an outlet without burning the house down? Electrical Safety for Old Home Electrical Wiring.

Wiring a Smoke Detector in a Basement

How to Install Smoke Detectors – Take the mystery out of smoke detector wiring for basements. Smoke alarms provide the earliest warning of both fire and smoke.

Why Smoke Detectors Go Off

How to Find the Cause of False Smoke Detector Alarms: Smoke Detector False Alarms and How to Fix Them, What would cause a smoke detector to go off?

Electrical Wiring for Smoke Detectors

How a Smoke Detector Circuit is Wired – Take the mystery out of wiring smoke detectors, Smoke Detector alarms help provide the earliest warning for both fire and smoke.

See more at the Electrical Questions Category Listing.

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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