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The power to the garage door opener should be supplied by AWG 12/2 wire on a 20 amp breaker protected by a GFCI. The wire going to the sensors on each side of the door can be door bell wire.

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Q: What is the size of wire gauge door?
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Related questions

How big is 6 gauge wire?

The size of the wire is stated by its gauge under American Wire Gauge. Six gauge wire is size 6 AWG.


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