4 ms·

Different wall sockets may well be on different legs of the three phase power. That may be why you can't communicate from one to the other.

ams6110 13y ago
Technically you mean opposite phase, not three-phase. Three-phase power is rarely (never?) seen in residential settings. It's a commercial/industrial service. Edit: s/opposite polarity/opposite phase/
- pedrocr 13y ago
  In Europe (Portugal at least) three-phase is the norm in residential installs. I assume it's because that way the power company gets to gouge you on the power fee. You need to sign up for more total power as your consumption is never perfectly balanced between the three phases.
- X-Istence 13y ago
  In the US maybe, in Europe (The Netherlands at least) three phase power to the home is the norm. Split phase is weird to me...
  - ams6110 13y ago
    Yep, I was speaking about the US. Didn't know that about Europe. In the US three-phase power is only seen in commercial or industrial installations. I know a machinist who has a lathe in his home workshop that requires three-phase power. He can't get it from the utility so he makes his own by using a single-phase electric motor to drive a three-phase motor as a generator.
VLM 13y ago
Phrase to google for is residential split phase. http://en.wikipedia.org/wiki/Split_phase http://en.wikipedia.org/wiki/Split_phase you're talking about classic high leg delta aka "why is one of my wires orange?" which is psuedo-obsolete nowadays. Its the same fundamental problem, anyway, in that signals have to go back to the nearest power pole transformer which doesn't pass the signals very well.
- X-Istence 13y ago
  Sorry? I am talking about three phase power. You get three legs running into your home (at least in The Netherlands, where I am most familiar with the electrical system). This split phase stuff may be right for US based homes... in which case it is the same concept anyhow.

ams6110 13y ago

Technically you mean opposite phase, not three-phase. Three-phase power is rarely (never?) seen in residential settings. It's a commercial/industrial service. Edit: s/opposite polarity/opposite phase/

pedrocr 13y ago
In Europe (Portugal at least) three-phase is the norm in residential installs. I assume it's because that way the power company gets to gouge you on the power fee. You need to sign up for more total power as your consumption is never perfectly balanced between the three phases.
X-Istence 13y ago
In the US maybe, in Europe (The Netherlands at least) three phase power to the home is the norm. Split phase is weird to me...
- ams6110 13y ago
  Yep, I was speaking about the US. Didn't know that about Europe. In the US three-phase power is only seen in commercial or industrial installations. I know a machinist who has a lathe in his home workshop that requires three-phase power. He can't get it from the utility so he makes his own by using a single-phase electric motor to drive a three-phase motor as a generator.

VLM 13y ago

Phrase to google for is residential split phase. http://en.wikipedia.org/wiki/Split_phase http://en.wikipedia.org/wiki/Split_phase you're talking about classic high leg delta aka "why is one of my wires orange?" which is psuedo-obsolete nowadays. Its the same fundamental problem, anyway, in that signals have to go back to the nearest power pole transformer which doesn't pass the signals very well.

X-Istence 13y ago
Sorry? I am talking about three phase power. You get three legs running into your home (at least in The Netherlands, where I am most familiar with the electrical system). This split phase stuff may be right for US based homes... in which case it is the same concept anyhow.