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USA Poster. I'm by no means a professional but have done some amount of electrical work. I discovered a 10/2 splice inside a wall. No box, just spliced with some nuts and taped.

I need to put it into a box, so I was going to undo the mess, add a box, "re-nut" correctly and then wanted to add a line of 12/2 for some outlets on that new wall. Can I just pigtail off the 10/2 junction and wire into a new line at 12/2?

I was going to start the 12/2 from the pigtail and into a 20A GFCI and then run 2 outlets along the wall from that. Better way of doing it?

isherwood
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This depends on the circuit breaker ampacity. Anything over 20 A is not allowed to use 12 ga circuit conductors nor 20 A receptacles.

Robert Chapin
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