[quote name='MoonBassAlpha' timestamp='1469812063' post='3101293']
A 3A fuse is not right for an amp that could draw over 900W.
240V * 3A =730W. I'd go for a 10A fuse as stated above.
What is the rating of the internal fuse? My shuttle 6 has a T-5A internally and the max [i]average[/i] power is stated as 400W on the back of the amp.
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My musings are more in response to this to be honest mate, you cant just look at the wattage (900watt in this case) without looking at the voltage, the example above probably takes a fraction of the input wattage suggested.
You can have many more watts out than you put in, but they are at a reduced amperage, the power to move a paper cone isn't much compared to say an electric motor, in that case you might need to reduce the voltage to the point that the input at 3000 watts now only drives a 300 watt motor.