Awhile back, I had two 220v outlets installed in my garage shop. They are both directly below one of electrical panels. They are shown in the first picture below.
I wasn't there when the installation occurred so I wasn't able to ask the electrician any questions. My question relates to the breakers he put in for the two plugs. The outlet on the right is connected to the breakers occupying spaces 20 and 22 (you can see the silver bar that joins the breakers). The outlet on the left is connected to the breakers occupying spaces 17, 19, 21, 23.
Why the discrepancy between the two outlets? They are identical outlets and I know he used 12 ga wire to both.
Thanks for any advice or comments.