Wattgate IEC does not fit tight.

It seems the part that connects to the amp are too far inside the IEC.

I’ve never been a fan IEC connectors. It’s a poor design, IMO.

What is the Amplifier? Manufacturer and model?

How deep is the well of the IEC inlet connector (on the Amp), the IEC female connector plugs into? When you push the female connector onto the male blades, prongs, of the inlet connector does the shoulder on the female connector come up tight against the outer flange of the inlet connector, therein maybe not bottoming out against the back of the inlet connector?

OR, is there a space between shoulder of the female IEC connector and the outer flange of the inlet connector? Therein the female connector is bottoming out against the back of the male inlet IEC connector.

If you measure the length of the inlet connector blades, prongs, from the back of the connector to the front of the blades,

Then measure how far back inside the female connector where the actual female contacts start you can then determine how much overlap there actually is for the male blades and female contacts.

Looking inside a FURUTECH F1-11 CU female connector the contacts look to be recessed back about 3/16". Must be a NEMA safety thing.

The three most important things for a good electrical connection:

Cleanliness.

Conductor, contacts, surface area.

Contact pressure.

.

Check out https://alexsoundtech.com/iego. They distribute several products including Iego (eye-ee-go, that's a capital I) power cord connectors The Iego IEC connectors are very tight gripping. The base metal is pure copper not brass or phosphor bronze.I am using the un-plated copper and the gold plated connectors on several of my cords.

They can be found on ebay and Alex Sound Technology is the seller. 

Do not simply key in Iego on ebay, you will be taken to the "Lego" toy blocks. Instead key in "Iego IEC connector" (again, capital I not lower case L) to get to the right place.

I am continually frustrated by this issue, it is such a poor design. Any metal with high conductivity is too soft to maintain tension. Are there any vendors that spring load their plugs?

@jea48

I go into the details of the Wattgate in my blog. Essentially series of questionable choices regarding the length of the body, shortness of the pins and the contact method resembling the prongs of a backstab outlet connection, in addition to poor materials.

At the very least, that body needs longer pins.

Really, I try to avoid ever saying "don't get this gear, it's bad" on this forum, or anywhere and prefer listeners to make their own choices.  Wattgate is a rare exception and I think consumers are safer and better off with a $5 part from the hardware store.