Scott, I wondered about that ... it sure looks like it, with a molded on plug.
FWIW, the previous Sushi cooler I found this guy using has a two-wire cord, with a ground wire added on later, and run along the outside of the zip cord .... secured by tape every foot or so. I think I had you post it a few years back.
Edit: I found the original pics, and have edited them ... to showcase the fine workmanship

Different jobsite, same customer:
![[Linked Image]](https://www.electrical-contractor.net/forum/RS/550Sushi_ground_2.jpg)
And I do NOT remember how the ground wire was terminated:
![[Linked Image]](https://www.electrical-contractor.net/forum/RS/550Sushi_ground.jpg)