The "Hello, I'm new here" threads should be started in the Introductions forum.
Ha, I thought the same, too, until I noticed the OP has been around for over a year. I would think that would be enough time to figure out that the The Cutting Edge forum is where topics that discuss the last bit of audio system's performance is discussed, with General Audio being the domain of those whose target for audio is just 'good enough.' To that end, there are plenty of threads on power cables and fuses in The Cutting Edge. If learning of another AKer's experience with fuses is desired, then Mister Pig had a pretty good thread
here.
Then again, jessearias wasn't asking for the sonic impact impressions of others. Rather, he seems to be asking how they work and how specifically can they make a difference. Personally, I have no idea how asprin works, but I've tried it and found that it does indeed have the effect the manufacturer claims. Not knowing how asprin works does not prevent me from purchasing and using it when needed. Plus, I've never found myself on a quest to find out how it works.
trhee posted a link to a brief discussion of power cables. It is actually a reprint of a Shunyata page. I have read some good things at Shunyata before as to the details of what's going on in a power cable. I just now visited Shunyata again, but am unable to locate the page with the good info in the few minutes I spent there.
When talking about, and understanding the effects of, power cords when used with a linear power supply (still the most common supply), a good understanding of how that power supply works is needed. In its most basic form, it is just a transformer, some diodes, and a couple caps that constitute the supply which delivers DC voltage to a load. A very simple circuit, still it escapes many people how this simple circuit can generate higher frequency hash and send it back into the power line. The answer is to forget voltage and think current. If you can draw the input current waveform of a linear power supply, you will certainly understand why power cables may make a difference in a sound system.
Interesting article, but reading the merits of specialised power cords by the manufacturer of their own product makes me a tad suspicious.
I dunno. If I wanted to learn about streaming products, I think I'd prefer to read what a manufacturer of such products had to say, rather than to read what the manufacturer of, say, phono cartridges would have to say about streaming products.