SO3: Total newb worried about XXL assembly (and hello!)

You can tell from the sockets. Do they look like the ones in your house (110) or for a clothes dryer (220)?

I strongly suspect they are 110 VAC sockets. Few houses are wired for 220 VAC in the garage. Electric cars and plug in hybrids are change this. YMMV.

If you’re going to have a computer in the garage, power protection is an issue. I wrote about this here:

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