This is what I use to run my well pump and other things.
Not necessarily for AC asynchronous motors.The majority of them run on 220V on one phase and generate the second phase from a capacitor.Welcome to the party myself3.
2 phase is like what am electric range runs on, 2 “ hot” legs of 120vac and one neutral leg.
I'm an electrician on container ships, does that count?I'm guessing none of you make a living in the electrical industry, correct?
With EU/Asia/Everywhere else power it's called a SINGLE PHASE 230Volt motor and requires a start capacitor wired in to get the motor started in the right direction.In the USA it is a SINGLE PHASE 230Volt motor. To start it rotating a capacitor is wired into the circuit and then cuts out using a centrifugal switch
I know enough to be dangerous but not heard of 2 phase power yet.
And dark voodoo magic.It's just geometry.
Yes it does. My question was to those living in the online fantasy world calling it 2 phase. 38 years in the trade NEVER EVER ran across a "2 phase motor"I'm an electrician on container ships, does that count?
With EU/Asia/Everywhere else power it's called a SINGLE PHASE 230Volt motor and requires a start capacitor wired in to get the motor started in the right direction.
How would you differentiate the two if it's exactly the same name for two different motors?
Wow that is impressive. Thanks for sending the link. 18,000 watts for 20 seconds sounds an like unbelievable surge rating for a $1,300 inverter/charger. Normally I wouldn't even bother even trying something like that but if it's starting your well pump that says its a pretty serious piece of gear.This is what I use to run my well pump and other things.
If you view the waveform on an oscilloscope, you will see a single sine wave (single phase) when measuring between Line 1 and Line 2 (below) at 240VAC RMS.
It get confusing for me because they seem to exchange "legs" and "phases" randomly. Sometimes they are same thing, sometimes they not. The problem is that it really looks like two phases on a scope? Is that what you're alluding to?For extra credit, try actually doing that
(It can be done, but is easier for an EE.)
Is that what you're alluding to?
A comment in the article said, "plug your scope into a isolation transformer", but problem with that is chassis of scope is now carrying 120Vrms.