Need a heavy duty receptacle

"Hubbell manufactures exactly what you describe"

As I mentioned in my post above, I am aware of those twist lock ends.

I guess where I'm going with this is why don't these makers of big, heavy, stiff power cords make another way to plug em in and not droop. Why should one have to "prop it up" or whatever other means to stay connected?

I remember a stiff DCCA cord I had once moved by accident and broke the ground pin off. Cost me $50 to have the pin replaced plus shipping both ways. Some of these are just too much power cord for the (conventional) ends they put on them.

Hi Markpao

For the sagging of the power cord on the female end at the component. The way I handled it was I wrapped some electrical tape around the female end before plugging it in. That in addition to propping up the cables really helped with the strain and stopped the plug from slipping out. Another guy I spoke to took a business card and inserted it along with the power cord into the component female end. We both had same $40 cables so we didn't feel weird using such tricks to stop the slipping.

If you are ever into making your own cables I found SonarQuest power plugs grip like nothing else I've seen. Although I haven't used any power cord thicker than 10 AWG in there.

I use MIT outlets. Sound much better than the hospital grade ones I was using.
Joe Nies

There are two obvious options here, one already cited above. You can do both of them if you are willing to change the plug on the end of the cord and the receptacle in the wall. Right angle plugs can be installed, so that the weight of the cord is directly down. This works well in most scenarios, but, in a high vibration environment, like an audio listening room, twist-lock plugs work very well. The best solution is to replace the receptacle with a twist-lock receptacle, and replace the plug at the end of the cord with a right angle twist-lock plug.

Caution: One thing that can go wrong when using twist-locks, assuming you install them right, is that you can't jerk the plug out of the wall if your equipment starts to go up in smoke.

Oyaide R1 Beryllium receptacles have a death grip. I have to pull hard to get my various power cords out of the one I have.