Any issue with splicing a 220 line?

Question

I have an existing 220 line (10-2 wire), that is an outlet for a dust collector.
I need to move the dust collector about 5 more feet down the wall. So the outlet needs to move 5 feet too.
Any problem with taking the plug out of the metal box, using it as a junction box instead, and splicing in another 5 feet of #10 wire to a new outlet down the wall?
I know this is fine with 110 but I don't do much with 220 ever, so just making sure.

JRaef · Answer

No problem, that is how you would do it. The only thing you cannot do is to make a splice in a wall and cover it without access to it.
#8 wire sliced onto #10 though might be a problem, not at the splice end, but is your receptacle rated to terminate #8 wire? Why are you increasing the wire size?

Any issue with splicing a 220 line?

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