Power cable education needed

If a manufacturer does not include and “adequate “ power cord....that being the gauge is too small to “adequately “ supply the said component with electricity..... there is another name for that power cord. It becomes a “light bulb”. So why would any manufacturer save money on supplying the customer with a power cord that was too small to do the job? This power cord argument makes no sense.

if you buy a larger gauge power cord than needed the component relies on the incoming fuse to protect it from getting hit with too much power. There is one answer...stay with the cord supplied by the engineers that designed the product. 
My favorite idea that I’ve read today is from my buddy MC....go with a larger power cord and a fuse with 2-3xs greater rating. Let it roll! I think I’m going to start audio grade fire extinguishers!

the component relies on the incoming fuse to protect it from getting hit with too much power

Uhhh.... fuses aren't current limiting devices. Components draw as much power as they draw, all according to Ohm's law, I=V/R. Put a 10 ohm resistor across a 10 volt potential, it will draw 1 ampere of current for 10 watts (I*V) of power. If you put a 300 amp fuse in front, it still draws 1 amp, because, well, 10 ÷ 10 = 1.  Not a problem if it's a 1 watt resistor. But if it's only a half watt resistor, a half amp fuse won't "limit" the current to half an amp. Its filament will melt, releasing the magic smoke that limits the current to exactly 0 amperes, and leaves the component's magic smoke fully intact.

Well than what do they limit?

My previous comment also begs the question, if the power cord needs to be triple-ought gauge, quadruple shielded adamantium for audio to sound decent, imagine how much better that $800 cable would sound if 100% of it's current didn't have to travel across the 30 gauge filament of the fuse you got for a couple bucks.

A fuse is an electrical safety device that protects an electric circuit from excessive electric current. Fuses are destroyed during overload conditions. When reasonable to do so (and economically sensible), circuit breakers are used instead because they are not destroyed during overload conditions. It's cheaper to install fuses than circuit breakers, but since fuses need to be replaced and circuit breakers don't, fuses have a higher operational 


where did I go wrong?