Amplifier heat depending on power cable?

If it is the power cord heating up, it is not properly connected inside. The heat is the electrons trying to get across a narrow spot in the cable. That hot cable is a chunk of defective junk.
You could use the hot cable in a low powered device like a CD plyer, with no ill effects...

It's the amp that's heating up, not the cable.
Thanks.

The link below may help. It may help to think of the power cord as an extension of your house wiring.

http://ecmweb.com/nec/code-basics/electric_conductor_size_matters/

I've noticed that my older Burson integrated, with its two 500 watt toroids never got 'hot' no matter how long I left it on. And that was with a run of the mill (but better than stock) power cord from GTT Audio.
The newer Burson, with 'only' a 380 watt toroid and a Zu Mission PC gets very warm to kinda hot if left on for more than 4-5 hours. Having no venting and using the entire casing as a heat sink would lead one to conclude that this is why but the older model was designed that way as well.
Tis a puzzlement!

Many years ago I remember being very surprised when a dealer friend replaced the original Krell power cord with one of the first Shunyatas (maybe the Phyton) on the normally very hot Krell preamp/CD player (KPS-25, if I remember well). The cord cooled it down dramatically. We repeated the experiment several times, with the same results. My friend was just as flabbergasted as I was.