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    Worth mentioning: the consequence of not following this advice is a good possibility of your house burning down. Commented Oct 11, 2017 at 16:01
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    @Myles Only if you can check all of the wire, it all has to be 12g Commented Oct 11, 2017 at 22:37
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    One needs to be careful with regard to wire gauge -- make sure that ALL of the wire is 12 gauge if switching to 20A. It's not uncommon, in older homes, for there to be a kludge of different wire gauges, even though this is "illegal" unless conspicuously marked. Commented Oct 12, 2017 at 2:27
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    @J... I thought that was implied, but I will clarify. Commented Oct 12, 2017 at 13:14
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    @bib I've seen enough "handyman" electrical jobs that, if it's implied and there's a way to interpret it wrongly, someone will, and they will do something stupid, dangerous, or both. It's obvious to anyone that already knows what they're doing, but that isn't necessarily the target audience here (no offence to Sandose either... just that anyone anywhere can and will read this). Commented Oct 12, 2017 at 16:22