how to install smoke detector
How to Add More Smoke Detectors
 | Summary: Adding smoke detectors to your home existing smoke detector system will help bring your home up to current codes while providing additional protection to your home and family and adding value to your home as well. |
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Adding 3-Wire Smoke Detectors to a 2-Wire System
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The 2-Wire System - Older Homes Many homes still only have one 2-wire smoke detector usually found in the hallway leading to the bedrooms or a stairwell.
Adding additional smoke detectors in other required areas such as individual bedrooms while converting the original smoke detector is relatively easy, as shown in the installation photos shown below.A typical construction project will require a smoke detector in each bedroom and on the ceiling or wall at a point centrally located in the area giving access to bedrooms such as hallways.
| Mount smoke detectors at least 4 inches from wall or on the wall with the top of the detector within 4 inches and 12 inches of the highest point of the ceiling. In multi-story units there shall be a detector at each level and shall be placed at the center of the ceiling 24 inches or more higher than the hall are required to have a smoke detector on the hall ceiling and in the bedroom. | In new construction when more than one smoke detector is required to be installed within an individual dwelling, the detectors shall be interconnected in such a manner that the actuation of one alarm will activate all of the alarms in the dwelling. Below you will see some photos of recent projects that I have selected to help you with your project. |
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Daves Companion Guide to Home Electrical Wiring
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 | Questions about Adding Smoke DetectorsQuestions about Wiring Smoke DetectorsQuestion 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. 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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More about Smoke Detector Retrofit
Smoke Detector Retrofit - 0 Wiring Smoke Detectors
Electrical Project Skill Level:Beginner to Intermediate.
Electrical Tools Required:
Basic Electricians Pouch of Hand Tools, Non-Metal Step Ladder, and a Voltage Tester.
Estimated Time:
Depends on personal level of experience, ability to work with tools for install smoke detectors, and the available access to the project area.
Electrical Safety:
Identify the electrical circuit, turn it OFF and Tag it with a Note before working with the wiring.
Electrical parts and materials for smoke detector wiring projects should be approved for the specific project and compliant with local and national electrical codes.
Electrical Codes and Inspections:
Installing additional electrical wiring for smoke detectors should be done according to local and national electrical codes with a permit and be inspected.
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| The Safest Way to Test Electrical Devices and Identify Electric Wires! The Non-Contact Electrical Tester |
| This is a testing tool that is a Non-contact tester that I use to easily Detect Voltage in Cables, Cords, Circuit Breakers, Lighting Fixtures, Switches, Outlets and Wires. Simply insert the end of the tester into an outlet, lamp socket, or hold the end of the tester against the wire you wish to test. Very handy and easy to use. |
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| The Quickest Way to Check for Faulty Electrical Wiring! The Plug-In Outlet Tester |
| This is great to troubleshoot a problem with outlet circuit wiring, is also used by most inspectors to test for power and check the polarity of circuit wiring. It detects probable improper wiring conditions in standard 110-125 VAC outlets Provides 6 probable wiring conditions that are quick and easy to read for ultimate efficiency Lights indicate if wiring is correct and indicator light chart is included Tests standard 3-wire outlets UL Listed Light indicates if wiring is incorrect, Very handy and easy to use. |
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| Strip Off Wire Insulation without Nicking and Damaging the Electric Wire! The Wire Stripper and Wire Cutter |
| A wire stripping tool used to safely strip electrical wires. This handy tool has multiple uses: The wire gauges are shown on the side of the tool so you know which slot to use for stripping insulation. The end of the tool can be used to grip and bend wire which is handy for attaching wire onto the screw terminals of switches and outlets. |
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