Making my own power cord.

Audioquest make power cords configured as you need
https://www.audioquest.com/ac-power/ac-power-cables/nrg-series/nrg-x2

unless you are trying to make a cord with a three prong wall connector and the ground unconnected, not sure why you’d want to do that and I’d also worry that it’s a safety risk ...

rvpiano "I need an unusual power cord configuration that I can’t find extant anywhere. It looks like I’m going to have to make my own, even though I’ve never done it before. I need to have a two pronged IEC-C17 connector at one end and a standard wall plug at the other end"

That sounds like a very common, ordinary, and easily obtained power cord to me!

Clearthink,

You would think!

Try to get it!

RV:

You can get it at Crutchfield:

https://www.crutchfield.com/p_703NRGX210/AudioQuest-NRG-X2-10-ft.html

The three prong plug is used to connect the equipment ground to earth ground and, for ungrounded appliances, to make sure the correct polarity is fed to the appliance. A C-17 plug is used for non-grounded non-polarity appliances so you don't need the third prong.

folkfreak and gs5556,

Thank you for responding.

I called both Crutchfield and Audioquest.
It’s a no-go.  
Audioquest doesn’t make a C17 for what I need.  They make a C15 two prong but it’s for an American style IEC, not European.
He suggested I call a European company.
I have contacted Cyrus.  We’ll see what they say.

Here is the C17 female connector:

https://www.stayonline.com/iec320-c17-c21-connectors.aspx

These guys make custom pc's from a drop down menu but not with the C-17. Maybe if you call them they can accommodate you... if not

You will find the conductor wires and plugs here also. Go to the "Custom Power" "Assembled Indoor Power Cords Menu" and you can order it any length with a plug on one end and the other end stripped so it's ready for you to just simply screw the C-17 connector clamps on the exposed ends.

there are lots of DIY sites out there a search away ...

eg, Blue Jeans Cable, Audio Advisor, Parts express, etc

You do realize that any IEC with a ground will fit, right? It's perfectly safe. 

What is not safe is when the equipment requires a ground, and you disable it. 

According to Audioquest there is an American C-17 and a European C-17 with a different configuration. Very bizarre!
Anyway, Cyrus is sending me their stock power cable with an American outlet plug.  That doesn’t solve the problem of finding an upgrade cable, however.
 We’ll have to see if the stock Cyrus cable makes any difference from what I was using (a standard three hole with only two holes utilized.)