I bit the bullet and picked up the materials I needed and got working on it. Sadly it took about 5 hours total but a good chunk was fighting the wiring through the flexible conduit. I would have bought the rigid plastic conduit if I had known how painful it would be.
Anyways, got my 240v 1 phase outlet with 50a double pole breaker installed (Yeah!). I ended up using some 6 awg 3 conductor wire and surface mounting it in using the flexible conduit. I know I didn't need 3 conductor wire but I may reuse it as part of a future detached garage where it may be useful.
The 240v outlet is only needed for my Thermal Arc 211i at the moment. I have hopes for a couple other tools in the future so may need to do more of this again later.
Did a little welding with using the 240v and it could be my imagination but it does seem to work a little better in general. Here is the 240v outlet compatible with my Thermal Arc 211i. I put this near the edge of the garage door since I do most of my welding outside and this gives me the most reach.
I also installed a 120v RV outlet and 30 amp single pole breaker. I used some 8 awg 3 conductor wire I got from my father recently. Other than the pushing wire through conduit it was pretty straight forward.
Be aware that 6-8 awg wire is plenty stiff and can be challenging to weave through the breaker box.
The receptacles, box, conduit, wire and breakers were all at Lowes.
For reference, here is a site with NEMA plug types.
NOTE: I am not an electrician but am somewhat handy and spend money and time making sure I can safely do a project. If I don't think I can do something safely then I pay someone to do it. Please be safe - electrical mistakes are not forgiving.
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