I run a Frigidaire 50-pint dehumidifier in my basement, which I am currently emptying the bucket once/twice every day since the power outlet is far away from the drain hole in the basement, and the drain hose that came with the dehumidifier is pretty short. But I am planning on getting an extension cord to use so I can move the device closer to the drain hole and use the drain hose so I can have it running without having to empty the bucket on a daily basis.
At the time of purchase (of the dehumidifier), I remember the guy at the counter (can't remember if this was from Lowes' or Home Depot) recommending a 6-gauge extension cord (my memory is a bit shaky on the gauge), but I wasn't sure if I needed a cord back then, so I didn't get any. Now that I started researching, a 10-gauge cord seems to be considered heavy-duty, and I couldn't find anything longer than 6-foot with 6-gauge that's under 100 USD - so I wonder what gauge I heard him say.
What gauge extension cord is generally recommended for this set up - considering the manufacturer seems to recommend not to use one at all? The dehumidifier is the only device that the extension cord will be used for, and I think I will need at least 15-foot cord. My power outlet is a US-standard 3-pins socket.