For wires running through sheet metal, I would recommend using a rubber grommet rather than having a bare metal hole.
Aside from that, you could put a flag note to debur the holes.
i was a sheetmetal worker for 10 years and i made swithcboards for about 7 of those years. (maybe more)
there are 2 methods of protecting wire as they pass through sheetmetal.
1. use a gland if it is a single wire or a gland plate to run multiple wires and a gland for each individual wire
2. use a rubber extrusion for protection of some form around the edge. as suggest above this could be in the form of a grommet if there is one to fit your hole or there are lots of small rubber extrusions around for this purpose.
as for the drawing, there should be a note on there to say that all holes should be deburred, especially if working in 1mm. but a note on the hole itself never goes astray. there are tools for this that just take the burr off and don't really leave a much of a bevel as such so it won't sharpen the edges like your suggesting it might. but the other thing to consider (depending on how your cutting the hole) typically there is only ever a burr on one side of the hole anyway. so only one side of the sheet would need treatment. also if you are using the correct cutting methods and the tooling is sharp, there shouldn't be much if any burr anyway.
at the end of the day i would be using a protection on the hole of some kind as a minimum. never rely on the fabricators to get the deburring right.
Thank you, I will run both options by my manager and see what he says. There was also concern that a rubber grommet would require too much space.
Maybe make the hole bigger. I don't know what cableing your running so I'm guessing a little. You can get some flat serrated plastic which you can fold into a circle. This would help with space.
Tell your manager that a grommet or gland is NECESSARY for wiring.
If you don't fit one, the wire will chafe against the panel over time, and eventually let all the magic smoke out of your circuit.
(Potentially through the user! - ask him how legal would feel about that).