On Sunday 27 December 2015 16:17:20 John Thornton wrote: > well there is no neutral because it's a 240vac circuit only... > The only reason there is not a neutral is that the wire was never pulled. And I am not sure that missing neutral is NEC kosher. My copy is now 17 years old, so I think I'd check a newer one to be sure. With it, you wouldn't need the stepdown and isolation tranny because you would then have a pair of 120 circuits available in the machine. But those loads MUST return on the neutral, they cannot use the static ground. > On 12/27/2015 12:16 PM, Bruce Layne wrote: > > On 12/26/2015 06:51 PM, John Thornton wrote: > >> There is no neutral in the machine, only L1 L2 and GND. The Neutral > >> for the house is bonded to ground at the panels. > > > > Electrician's Joke: > > > > Q: What's the difference between neutral and ground? > > A: About six inches. > > > > There's a very good reason the return current is carried on the > > neutral and the ground should not carry any current in normal > > circumstances, but we do need to understand that electrons don't > > care about our conventions. They're just as happy returning via the > > ground wire. They don't know that the green wire is off limits for > > all but emergency traffic. > > > > The concept of ground/neutral functional equivalence is also a real > > life saver for anyone who might otherwise consider standing barefoot > > on a basement floor while hot wiring any line powered AC circuit.
Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
