How to determine doorbell wire gauge

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Old 02-16-18, 03:01 PM
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How to determine doorbell wire gauge

I'm going to install a Ring doorbell, but I'm moving the location of the wired doorbell about a foot away from its current location. I need to add a foot or so to the doorbell wiring. I've read that doorbell wire is 18-, 20-, and 24-gauge wire. I hate to ask what to some might seem like a dumb question, but how do I confirm the gauge of the wire that's currently installed? The house was built in 2009. I don't think there's enough there to read anything on the wires. Thanks.
 

Last edited by gogreen1; 02-16-18 at 03:30 PM.
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Old 02-16-18, 03:39 PM
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The smaller the number the thicker the wire. If you're not sure always go thicker. It can handle more current. For a door bell wire system it's no big deal.
 
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Old 02-16-18, 05:03 PM
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I normally use 18ga for doorbell (and thermostat) wiring.
 
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Old 02-16-18, 07:18 PM
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Thanks, Norm201 and Tolyn Ironhand.
 
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