how to wire a junction box that is 220/240 volt 30 amps 10/3 romex (dryer circuit)

how to wire a junction box 10/3 wire consult with codes before doing electrical work

[@SleepytimeOasis]

The random fart got me good

[@joe_origlieri]

big time

[@victorvek5227]

Next up - change the batteries in the smoke detector.

[@SpartanDrill]

Thank you, I'm about to move my dryer to the next room, and need to extend the line from the existing outlet. Plan to use this method!

[@stevec.5907]

Thanks. I need it too.

[@quinsattorney]

Left handed wire nuts?

[@matthewbeaver5026]

Can i make a junction of 10-3 w ground to my extention of 10-3 no ground?
If so just hook the ground of the the starting wire to the junction box?

[@billwelter4101]

Messed me up that the video was reversed! Lefty tighty!