Power Cord Length


Here's one for the electric wizards to kick around. Whilst attending Axpona this weekend I was doing some power cord shopping. At one particular display I was being told by a very well known cable company representative, I'll not mention the name so it doesn't influence any responses, that the rule of thumb is that in order for the pwr cord to be effective it needs to be at least five feet long. This allows the current to be in the cord long enough for it to be effective. Ok, I'm really dumb when it comes to this sort of thing so maybe I said that in the most simpliest of words but that's pretty much how it was explained. Anyone care to elaborate on this good or bad?
jackcoke

The AC power that comes into your home travels great distances and there are hundreds if not thousands of feet in branch circuits throughout your home.

What country is n/a?

My power comes from the step down pad mount isolation transformer located on the property next door.

The two 120V 20amp dedicated branch circuits that feed my audio equipment are no where near hundreds let alone thousands of feet long. You must really live in a big house.

A power cord is not the last 3 to 6 feet of wire that feeds the power transformer of a piece of audio equipment. It is an extension of the leads of the primary winding of the power transformer.