What do you think of this power cord?

cakyol

Please read a bit more about amps, dynamic & transient loads

Please feel free to share any documentation to support your claim that appliances have current requirements in excess of that defined by the manufacturer. That appliances have "dynamic and transient loads" is a given and doesn’t support your claim.

Please feel free to share any measurements you have made that also confirm your claim; if you choose do do that, please identify the appliance so that we can attempt to duplicate your measurements. These are very easy measurements to make.

Are you familiar with the NEC? IEEE? OSHA?

It amazes me how quickly and loudly some will argue about things that are easily measured. There’s no reason to dispute this stuff. <SMH>

cakyol

That is why the factor of 2.5 was mentioned.... to account for differences in the class of the amplifier ...

Huh?

The back panel measurement is done with a 1khz STEADY sine wave signal ...

Nonsense. The current rating of any appliance is the current rating. I don’t care if you’re talking about a refrigerator, furnace, or audio amplifier. An audio amplifier is typically spec’d to include current draw at idle and maximum power.

You cannot accurately determine an amplifier’s current requirement by using calculations involving solely its audio output in watts and your rules-of-thumb. And why bother? The info you need is almost always on the back panel, the user manual and the spec sheet.

cakyol

How much power does your amp require ? Add up the wattage of all channels (in case you have a multichannel amp) of your amp, multiply that by 2.5 to account for losses and very dynamic music passages and the peak power requirement, and that is how much power you need to draw from your mains outlet. Divide that by your mains rms voltage (typically 120 in the US) and that is roughly your current requirement.

That's a pretty silly exercise. To determine the power an amplifier requires, just look at its back panel or spec sheet, where its current draw will be listed. The correlation between actual current draw and audio output in watts is dependent on the amplifier's class of operation.