I have an FT-747GX Radio that I am using as a RF Generator for a plasma cleaning machine. In the operating manual on page 3 it states:

I have a power supply connected to this radio which outputs 12V at 30 amps. Between the power supply and the radio I have a 20 amp fuse, but this fuse keeps dying on me.

What I dont understand is: is the radio pulling more amps than what it says it outputs? If it so, should I increase the fuse to 30 amps?