jaggedben
Senior Member
- Location
- Northern California
- Occupation
- Solar and Energy Storage Installer
Nor does the NEC, who seem to throw physics under the theory bus as well......
~RJ~
I would disagree with the part about the NEC not dictating the zero. You should read the informational note that goes with the definition.
I think the million dollar question is: what is the definition of neutral?
Not really worth a million dollars when any of us can look it up in the NEC.
Neutral Point. The common point on a wye-connection in a polyphase system or midpoint on a single-phase, 3-wire system, or midpoint of a single-phase portion of a 3-phase delta system, or a midpoint of a 3-wire, direct current system.
(Why did no one quote it already?)
The informational note makes the point that the nominal vector sums are zero among conductors which 'utilize' the neutral, which is true even in a high leg delta.
My question to you: in a 2 phase 3 wire system (see this: http://electrical-engineering-portal...-3-wire-system), is the midpoint conductor a neutral conductor?
Under the NEC definition, no. But if I'm talking to my helper in the field, well then, yeah, maybe?
Now I'm curious, is the common conductor in those old systems in Philly grounded? If so I'd just call it the 'white' wire.