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Old 14th October 2019
  #3
Lives for gear
 

Not all IEC power cords are the same. The jacket of the cable itself typically would be stamped or labeled with the wire gauge contained inside. The one I happened to have at hand to look at is 18 AWG ("P.E. CO. 18/3 SVT"). I don't know for sure, but I thought in general UL listing required a minimum of 18 gauge for AC power cords...but I could be mistaken, or perhaps your cord wasn't actually listed.

It's often the same for "heavy-duty" style outdoor extension cords, which if one isn't careful in checking often turn out to be 16 gauge wire in a heavy outer casing. That's fine for preventing damage in relatively rough usage, but not so good for powering a large tool.