I've built a bunch of automation machines for Briggs and Stratton and they never pull a neutral only 3 240v hots and a ground. We always have a control transformer for the 120v stuff... I have the same here now.
On 12/27/2015 3:52 PM, Gene Heskett wrote: > 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 ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
