Re: Repost RE: Explain 3 Phase

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "davep by way of Terry Fritz <twftesla-at-uswest-dot-net>" <davep-at-quik-dot-com>


>      |---|   |---|   |---|                         ----------------------
> 0    |   |   |   |   |   |
>   ---|   |---|   |---|   |---                   0
> 
>                                         OR
>   ---|   |---|   |---|   |---
> 0    |   |   |   |   |   |
>      |---|   |---|   |---|                      0
> 
>                                                    ----------------------


	errrrr
	That's 180 out.
	That's what a (two channel) scope will show
	REFERENCE THE GROUND/NEUTRAL.
	The 220 load is connected from line to line and sees the
	two (in phase) voltages adding. 

	On the right is NOT what will be seen.  Anywhere.
	Add the wave forms, yields:
				0--------------------
	Adding the two voltages in the common home system yields
	2220, rather than zero...

	There is a hidden inversion in viewing the waveforms
	REFERENCE THE assigned ground.

One has:

>      |---|   |---|   |---|    
> 0    |   |   |   |   |   |
>   ---|   |---|   |---|   |---

>      |---|   |---|   |---|    
> 0    |   |   |   |   |   |
>   ---|   |---|   |---|   |--- 

These add to:

>      |---|   |---|   |---|    
>      |   |   |   |   |   |      
> 0    |   |   |   |   |---|    
>      |   |   |   |   |   |
>   ---|   |---|   |---|   |--- 

	So the two 110s add to 240....
	Which, we know, is what happens.

	ALL that is necessary is to recall that the ground being in the
	center leads to an 'invisible' inversion in one leg.

	(I have watched an entire computer companies electronic
	hobbiest group get Just This Snarled on this issue.

	Just keep reminding:
		Adding out of phase yields zero.
		Adding in phase yields double.
		House wiring yields double.)

	(Historical Note:
	Edison (yeah, him....) cooked up this system, for DC.
	Necessary because its hard to run voltages up and down in
	a DC system....)
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