My puppy chewed the power plug off of my space heater, and I'd rather not buy a whole new space heater if I don't have to. I went to the hardware store and found a plug rated for 125V and 15A. The space heater cord is labeled for 300V, but the device says 120V and 1500W. Will the plug be safe for the space heater? Based on the wattage, it should only draw around 12.5A, but I don't know if it needs a certain amount of buffer in case it spikes high or anything like that.
Also: I have to chop off the chewed parts of the cord, and it was already a short cord begin with. Is it possible to add in more cord so it's the same length as before?