Luckily I noticed some of the 100 Amp fusible disconnects the supply house gave me for my 480 volt service were General Duty, 250 V rated. Could have easily gotten a bunch of stuff all put together and had to take it out.

I remember seeing a 250 volt panel full of 250 volt breakers running a 480 volt log home cutting line that had been in service for years.

I have a feeling this kind of thing occurs from time to time, and am wondering what the greatest dangers of it are. Would a dead short be more likely to cause parts to fly? Is it mostly to handle the fault situations that the construction is different?

Don't get me wrong, I am not looking to cut corners, just curious what some of the possibilities are.