View Single Post
  #254   Report Post  
Posted to alt.home.repair
trader_4 trader_4 is offline
external usenet poster
 
Posts: 15,279
Default Estimating KWh electicity billing using clamp-on amp meter

On Saturday, July 28, 2018 at 4:44:42 PM UTC-4, wrote:
On Sat, 28 Jul 2018 12:59:38 -0700 (PDT), trader_4
wrote:

On Saturday, July 28, 2018 at 1:30:42 PM UTC-4, wrote:
On Sat, 28 Jul 2018 11:34:32 -0500, Sam E
wrote:

On 07/27/2018 04:40 PM, wrote:

[snip]

"Split Phase" is a type of motor, not an electrical distribution
method.

Can't accept a phrase applying to more than one thing? "Split phase" is
where two phases are made from one (in other words, one is split into
two). Whether it happens in a motor or in a transformer doesn't change
the appropriateness of the phrase.

[snip]
The problem with that is you did not create another phase.



Yes you did, by using a center tap you now have two voltage sources
that are 180 deg out of phase. You're getting hung up on how something
is created. Electrons in three wires don't care how they were created,
what the source was. AGain, if you took the old 90 deg two phase,
that had two phases you say. If I made it 179 would that be two
phases? 181? Then why not 180?


There is only one secondary winding and only one source.


You sure can't model what's going on over that service with only
one voltage source. Describe the simple circuit schematic, using
ideal voltage sources, that you'd use to model it. I can give you
mine, it's exactly the circuit diagram shown in the IEEE paper
describing the analysis of what we're talking about, which is two
ideal voltage sources. You
take one 120V ideal voltage source and connect it's negative side to
the positive side of another 120V ideal voltage source. Explain how
to model it with a just a single ideal voltage source.




It is only confused homeowners who have trouble understanding that.

The rest is gibberish


A center tapped transformer essentially creates two coils with one
end connected together.
Put two windings on the same shaft at the generator and feed it to the
house over three wires, shared neutral, with a 90 deg phase
difference between the two coils. Would there then be two phases entering
the homeowner;s house?

Yes or no?

Would there still be two phases there if I rotate one generator coil
so that it's 179 deg phase difference instead of 90?

Yes or no?


If it's 180 phase difference, then what? If that is still
two phases, then it's electrically identical to what's coming into
the house from the center tapped transformer.

All those are simple, very obvious questions a student would ask
a teacher. Note that when you apply electrical engineering uniformly,
you don't wind up with bizarre unexplainable singularities. And again,
I don't care what most of the industry chooses to call it, that
evolved from a historical perspective and from their perspective that
what enters the house is derived from a single phase off of their
3 phases. I acknowledged that in my first post. It's like Kleenex
or tissue, then saying that because it's commonly called Kleenex,
it can't be also called tissue or more importantly described or
analyzed as a soft paper product made from trees. If I take one
phase from some power source and put it into an electronic
black box that has six phases coming out the other side, synthesized,
is there only one because there was only one coming in? If five of
them are at 90, 120, 150, 210, 240 would those be legitimate phases but
the one at 180 isn't? Don't phases have equal rights and treatment
under the laws of electricity?