Installing Smoke Detector Electrical Wiring

When installing a heat sensor/smoke alarm in kitchen, and 2 additional smoke alarms in hallway…

Electrical Question from Rob about Smoke Detectors
Background: Rob, a Homeowner from Doncaster
Question: When installing a heat sensor/smoke alarm in kitchen, and 2 additional smoke alarms in hallway, is it ok to run 1.5mm 3 core and earth from consumer to kitchen alarm and then 1.5mm twin and earth from kitchen alarm to next two?

Dave’s Reply:
Thanks for your electrical question Rob. It is typical for newer installations of smoke detectors to be connected in series so that if one goes into alarm, they all do.

The Following links will assist you with your electrical question:

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Home Electrical Wiring and Electrical Repairs

Please Note:
Unless otherwise posted, please refer to the following Guidelines when working on Electrical Projects:

Skill Level:
Intermediate to Advanced - Electrical Repairs and Circuit Wiring is Best Performed by a Certified Electrician or Licensed Electrical Contractor.

Electrical Tools Required:
Basic Electricians Pouch of Hand Tools, a Voltage Tester and a Multi Meter.

Estimated Time:
Depends on personal level experience, ability to work with tools, work with electrical wiring, and the available access to the project area.

Precaution:
Identify the project circuit, turn it OFF and Tag it with a Note before working with the wiring.

Important:
Modifying existing electrical circuits or installing additional electrical wiring should be done according to local and National Electrical Codes, with a permit and be inspected.