DC ground

Discussion in 'General Electronics Chat' started by Corky, May 13, 2010.

  1. Corky

    Thread Starter New Member

    May 13, 2010

    Hoping this isn't too stupid.

    I'm running 115Vdc from a Harris turbine (micro-hydro generator similar to a Pelton wheel) 700' to a charge controller. The maximum amperage would be close to 12.

    Instead of running two wires could I run one 'hot' wire to the charge controller and run the other to a ground rod on each end. I've been told I can't by people I like but I'm not sure if that's true or why. I"m using #6 copper stranded wire for one lead, and if I need the other it would be #1/0 Al.

    Thanks for whatever attention you can give this.

  2. dsp_redux

    Active Member

    Apr 11, 2009
    Hydro-Quebec uses something similar to this on it's distribution network and uses earth ground as a ground. It really depend on how you are equipped, and how you can make it safe enough to be conceivable. This can be quite hazardous.
  3. russ_hensel

    Distinguished Member

    Jan 11, 2009
    Find out the resistance of the ground leg.
  4. jad69

    New Member

    Jun 5, 2010
    12 amps ... all the earthworms may get pissed, but likely you can do it. to measure resistance of ground put a 12 volt battery or source at one end with an amp meter in series, measure the voltage across the wires at each end, as precisely as you can ( not at the battery as the amp meter can have significant drop) then post the numbers and wire length and size and someonw will calculate the ground resistance for you.
  5. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
    no gotta run 2 identical wires +vdc and return