Let me try to explain 230 volt service.
Think of a flashlight with two batteries. (Don't go LED on me here.)
On each battery there is a flat end and bump end. When the batteries are installed, bump to flat, the voltage measured across the two batteries is 3 volts. If the batteries are installed bump to bump or flat to flat the voltage measured across both is 3 volts.
You're going crazy and don't understand how that is possible. It is simple, voltage is measured in reference to another point. With the batteries installed bump to bump or flat to flat, the measurement is from -1.5 volts to +1.5 volts or 3 volts total between the measuring points. North American domestic AC current is supplied this way. We connect Neutral to the center (bump to bump) and use the Neutral for all of our normal 115 volt appliances. Half of our 115 volt is positive and the other half is negative. For that 230 volt table saw, we connect across the positive and negative parts of the distribution.
You're right. I am going crazy. I saw your post and was confused. I got out the following:
* 2 new C batteries
* Fluke model 112 "True RMS Multimeter" set to measure DC volts.
* The batteries each measured 1.6 volts.
* With the probes reversed, each battery measured -1.6 volts.
* The two batteries arranged bump to flat measured 3.2 volts.
* With the probes reversed they measured -3.2 volts.
* The two batteries arranged flat to flat measured 0 volts
* With the probes reversed, they measured -0 volts
* The two batteries arranged bump to bump measured -0 volts
* With the probes reversed, they measured 0 volts
Note: The measurements were rounded to the nearest 0.1 volt.
The measurements match what I was taught in high school physics, as well as what I expected.
This has nothing to do with AC circuits nor how a 230 volt AC circuit can be divided into two 115 volt AC circuits.