I'm installing a new wall oven into a new cabinet.
Previous oven was wired with just the wire nuts exposed behind the oven; I was a bit surprised of not having an electrical box.
I was planning on just installing the correct size electrical box but I've also read that a disconnect is recommended for a 220 appliance if the panel is more than 50' or out of line-of-site (both apply).
I would go with an ordinary electrical box with no switch.
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