What do you mean by "ground is not involved"? Oh wait let me think this through...if they're out of phase, I guess you will always have that 230V across...so the return wire from each of the two sources doesn't lead to the heater, they are just going to ground hence you get that 115V from each...
Not so sure about that schem...if you're showing that source to be 230V, is what you're really saying the attached image?
Because I think that's how you would get 230V, and have 115 between the ground and each of those wires? But that doesn't seem to make sense because you'd really be coming...
Thanks for the quick response. So both red and black are 120V to the cable? So...did I just not pay close attention to where he was actually measuring the voltage? Because wouldn't it be dangerous if the current was running along the cable shell? Maybe it was actually a conductor on the inside...
So I'm getting my water heater changed and my circuit breaker is probably wired wrong because we had to flip a bunch of switches not labeled "water heater" to actually shut the power off. One thing I didn't really get was why one switch shut down the voltage between the red and black wires, but...
This isn't homework, but it feels like it...it's from the Dorf & Svoboda Introduction to Electric Circuits, 6th ed. on p 298, if you happen to have that.
I'm following the derivation of the formula for capacitor voltage for an RC circuit with a single resistor and single cap, or the current...