Okay, so in series. To get 208. This is my exact question:

"A motor has a nameplate wiring diagram as shown below. (Diagram is Wye with 9 leads). Select the correct connection of the leads where connected to the available 208, 3-phase branch circuit."

So, its a 120/208 3-phase 4 wire Wye system correct?
And to get 208 I just wire it in series, correct?

Appreciate your help, I think I understand now though

 

Okay, I 100% get all this now. Thanks for your help

 

Okay, so in series. To get 208. This is my exact question: "A motor has a nameplate wiring diagram as shown below. (Diagram is Wye with 9 leads). Select the correct connection of the leads where connected to the available 208, 3-phase branch circuit." So, its a 120/208 3-phase 4 wire Wye system correct? And to get 208 I just wire it in series, correct? Appreciate your help, I think I understand now though

Your not "Getting" 208 by wiring the motor. 208 is the voltage your wiring the motor to.

A motor data plate will list the rated voltages for the motor and show the diagram of how to connect it to the system.

 

Whether a motor is wired Wye or Delta has no bearing on the line voltage (unless designed as such). It has to do with power ratings, stator slot sizes, etc. You can have a 480V motor wound as Delta or for Wye, a 240V motor wound as Delta or for Wye, etc. It's a decision the motor mfr makes based on those other factors.

 

Edit: Ignore what I wrote here previously. I was thinking of a 12 lead motor, but it looks like your example is for a 9 lead, which is more common.

 

A wye wound motor will have 4 individual circuits a delta wound motor will have three

 

They each have six windings, but you cannot separate all 6 windings unless you have a 12 lead motor. The fact that you have a nine lead motor does not change the fact that the motor has six windings or coils.

 

Okay awesome, good stuff. Makes sense that they don't get neutrals, sense I can have 230/460 Delta or 230/460 Wye motors, so the 1.732 rule doesn't even apply. Makes sense now

 

Right. And whether a 9 lead motor is wired wye or delta at the factory has no effect on whether your supply is wye delta.

Since the motor is a 230/460, and you have a 208V supply, you would wire it low voltage.

You would wire it high voltage if you were supplying 460V.

And note that a lot of motors have a low voltage range of 208-230V.

 

You would wire it in series for high voltage, parallel for low.

Regardless of the applied voltage, the windings are always set up to handle the low voltage. So you have to think, how will I wire it to get the low voltage across each winding?

If you wire the two windings in series you will get a voltage drop across the windings. So 460 applied, would be 230V across each winding.

If you had 230V as the supply voltage, you would want to wire the windings in parallel. In a parallel circuit you would not get the voltage drop across the windings, so each winding would get the 230V.

The same thing happens when it is wired for Delta

I hope that is not to confusing.

Also if they haven't mentioned it, the numbers on the windings are always numbered in clockwise direction toward the center for Y. Also for delta, just not toward the center.

 

While many have eluded to it, just to be perfectly clear: wiring the motor for low or high voltage would depend on what voltage is available to supply the motor. Delta or wye is not relevant really.