Yeah I'm pretty sure it's all single phase, just a different amplitude.
Voltage being the amplitude, but the sine wave carrying the same basic shape
with respect to time.

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
David Beierl
Sent: Friday, May 16, 2014 7:05 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Off topic Friday question on switches...

At 06:43 PM 5/16/2014, Gnarlodious wrote:
>Modern homes have 2-phase service to run resistive loads like clothes
>dryers or water heaters, which use a special huge socket. The service box
>is 2-phase but wired for single-phase loads. Except for the dryer and oven,
>which tap across 2 phases. You won't find any large inductive loads in
>residential homes