What makes a 20A IEC rated for 20 amps?


What makes a 20A IEC rated for 20 amps?
I now the blades go in a different direction but are the blades thicker to carry more current?
I ask this because I have a component that I am demoing that has a 20A IEC on the back. I have some pretty pricey power cords available with 15A Furutech NCF fittings. A 20A Furutech replacement 20A IEC connector sell for almost $300! Or I could always use a 20-15A IEC adapter. But that would add a (cheapo) connection.

So how about if I just change the IEC in the unit to a 15A Furutech NCF about $80. Hence the question.

ozzy
128x128ozzy
celander, auxinput,

Thanks for that information. 
But, is the 20A IEC actually thicker than a 15A IEC? 

ozzy
I have a 20A power cord that I am now using with a relatively new 15A Power amp. I'm using a Voodoo Cable IEC adapter, and it works great. No loss in performance, and reasonably priced. They make a 15A and a 20A adapter. https://voodoocable.net/product/in-line-iec-adapter-2/