Heavy Power Cords

I've actually rigged up a little sling for both my amp and phono stage, where the weight of the cord wants to pull it down. I just took some string and looped it around the shaft of the cord by the IEC plug. Then I twisted a metal clip to atach to some point on the top of each component and attached the string (I used a picture hanger, but you could probably use a paperclip or something similar). Of course you will have to adjust the string tension to get it right, so I advise using a slipknot.

Enjoy,
Bob

Here's some options

IEC Saftey Retaining Clips

Here's another style Retaining Clip

Clips are not universal fit and may require some bending and fiddling to work

On this site Bulgin (upper right corner) appears to offer clips by "NEMA" type termination

Mmarvin19, usually I support the cable not the connector.

Try wrapping the IEC in Teflon thread seal tape (aka, plumber's tape). Use enough to get a snug fit and it will keep the cord from sagging. I find it takes about 1.5 - 2 feet. It's easy to clean up if you want to remove it as there is no residue.