Yes it's a 50A 220v outlet. All of my big tools run off that outlet. It was in the right hand corner of the previous enclosure. I moved the machine to the right about 30" before I started this round of upgrades. I wrapped the box with aluminum duct tape to keep chips out of the openings. I was thinking about adding a cover of some sort but I don't run flood coolant so at worst its in a really humid environment.
I had a chip fall into a hole in the top of the outlet box a couple years ago (before I added the duct tape). It made a LOUD pop, but the machine kept on humming.