Electrical grid USA/UK +World

Discussion in 'Technology / Science' started by fridayfishfry, May 15, 2018.

?

USA uses dirt as return to power station

Poll closed Nov 11, 2018.
  1. Yes

    1 vote(s)
    50.0%
  2. No

    1 vote(s)
    50.0%
  1.  
    fridayfishfry

    fridayfishfry Well-Known Member

    From USA,
    I read some UK threads about how their timers break.
    UK Digital timers don't break
    UK Mechanical break quick

    USA Digital timers break (in like weeks)
    USA Mechanical timers last years
    From my experience

    UK uses 240v or 220v 50hz and maybe dipole?
    USA uses 120v 60hz single pole for most things.

    As far as I know USA uses ground (yes the actual dirt in the soil outside) as a return to power station (not by wire).

    Please help understanding of this if you know about power return.

    Power grids are different all over the word. Gadgets like timers might work/break different.
     
  2.  
    ttystikk

    ttystikk Well-Known Member

    The ground is... ground. Positive and negative go to the power station.

    Single phase or three phase makes no difference.

    America has 240V, single phase. 120V is either zero above or below the line.

    Time for you to crack an electronics text, brother.
     
    Lordhooha and Roger A. Shrubber like this.
  3.  
    fridayfishfry

    fridayfishfry Well-Known Member

    This is what I mean
    https://en.m.wikipedia.org/wiki/Single-wire_earth_return

    When I drive down the street there are 3 wires in 3 phases. No neutral.

    What I think I was missing is that at the house transformer at the street, 1 phase is turned into x2 120 hots and a neutral (?)

    I need power systems for dummies
     
    Last edited: May 18, 2018
  4.  
    fridayfishfry

    fridayfishfry Well-Known Member

  5.  
    redi jedi

    redi jedi Well-Known Member

    The grid is 500-250kv, at the pole outside your house is 25kv. Yes Im pretty sure its ground to earth but im not a lineman.
     
    fridayfishfry likes this.
  6.  
    Roger A. Shrubber

    Roger A. Shrubber Well-Known Member

    Lordhooha and Cx2H like this.

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