What receptacle for 240V 20A in the States?

Guys, thanks for all the excellent responses!

I now have some receptacles and plugs. I bought 2 different types because I was not sure if I needed a 3 or 4 wire (Hubbell HBL2320 and HBL2410) while at the store.

I should have mentioned that the amp (originally from Europe) 220V but uses 1 hot, 1 neutral, 1 ground, like 120V in USA/Canada. I noticed that the new HBL 2320 receptacle uses 2 hots and 1 ground...Can I use this?

The HBL 2410 has 4 wires...I believe this is wrong for the application.

Jea48 - I actaully have 2 unused dedicated 120V lines, I wanted to connect both hots to make 240V. I am sure you are right about my voltage, it will be 250V, since I get about 125 on a single line. I was hoping to connect the 2 hots, a neutral and ground, then emulate what is happening in Europe.

Ngjockey - I don't know why this would be out of phase when the breakers are on the same buss bar? I am not trying to tell you that you are wrong...just trying to learn. Also you mention to cheat and put 2 hots on a 3 prong outlet...but I think that is how it looks on my oven for example.

Thanks again guys!
Mike

Angus80808, You will need to reconfigure one of the existing 120V dedicated branch circuits to a 250V dedicated branch circuit. At the electrical panel the 250V branch circuit must be connected to a 2 pole breaker. If the wire is #12 awg and the receptacle is a 20 amp then the breaker must be a 2 pole 20 amp breaker.

As in regards to phasing the power that feeds your home is fed from a split phase secondary winding of the power company's utility transformer. Single phase, only one phase. Two hot ungrounded conductors with a center tapped grounded conductor, the neutral.

Jea48 - Yes, as you mentioned, I will connect to a 2 pole breaker (2x 120V). The wire is #10 awg and will use with a 20 amp circuit...(or maybe 30A??) This makes sense to me.

I guess I'm worried that there is no neutral wire going to the amp, should I be?

Thanks!
Mike

Please, call an electrician before starting.

NGjockey - Ha ha! Yes, I work with several EE's and technicians...I will invite one over to help, and to check it. Thanks for your concern!