RE: Three Phase Generation and transformer

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: <davep@xxxxxxxx>


> That seems reasonable. I am thinking a counterpoise for RF since this is
> mobile 12" and a required ground rod to power sources. You are
> suggesting that if I clamp a current probe I should have no measureable
> current flowing to the ground rod?
   Or in the neutral tie anywhere.
   I may be being overfancy.  If I understand the arrangment
   any current in the neutral would inidcate a fault of
   some kind.

   Interesting thought, tho:
    The 'tesla HV' retunr 'should' run to the counterpoise,
    but 'some' may find its way onto the 'PS Neutral bus'.
    comments?

   I though this involved a balanced, three phase
   input to the HVDC supply?

> Odd, the neutral on the HV transformer input is combined with what
> appears to be the center tap of the 208v primary. What do you make of
> that? The transformer core is grounded.
    I thought this was a three phase HV transformer?
    Do we need a schematic??
    (or am i confused?)

> Neutral on the genhead is grounded.

> I guess it is reasonable to put my 3 phase fused disconnect at the
> generator, yes?
    I would.  Comments?

> Is it normal code to ground the neutral on the step down
> transformer to the case and earth? I believe I read somewhere that is
> code on the generator.

> The HV transformer may need further investigation.
     I see much wisdom in the comments, including:
      Check the NEC and see.

   best
    dwp