Exactly as posted above. If you were running on 110v, it could supply 11,000 watts at 100% efficiency. Realistically, you're looking at 1000-1200 watts continuous. For short bursts there is no telling. These are slow blowing fuses and you might be able to put out 5000 watts on a burp with one.
If not, you could take a spray air can from stables or something and hold it upside down and blast the fuse with Co2 and get her nice and cold, that helps a lot.