Re: AC Split phase motor????

["BunnyKiller" <bigfoo39-at-xxxxxxxxxxxx> (by way of Terry Fritz <twftesla-at-xxxxxxxxxx>)]

Tesla list wrote:

> Original poster: FutureT-at-aol-dot-com
>
> In a message dated 11/11/00 6:13:21 PM Eastern Standard Time,
> tesla-at-pupman-dot-com writes:
>
> > Thanks Bert,
> >
> >  It sounds like you nailed it.  The instantaneous HV on the motor case
> >  probably found the nearby mains windings very tempting !
> >
> >  This is one reason why I connect my motor chassis to the utility ground
> >  instead of the RF ground.  The RF ground is very noisy when the coil is
> >  running,  and this must put considerable stress on the insulation between
> >  the case and the windings.
> >
> >  I opened up the damaged motor,  but unfortunately the run winding of
> >  my motor had opened deep inside the stator,  and I didn't have the
> >  patience to rewind it.  I agree about the follow-through current.
> >
> >                       Cheers,
> >
> >                       -Richie,
> >
>
> Richie, Bert, David,
>
> I too, ground my motors to the utility ground, and I've had no
> failures dispite a number of hits to the motor.  I wonder if David
> and/or the other fellow (Scot?) used the RF ground to ground
> their motor?
>
> John Freau

Hi John ...

I had the case and mounting structure grounded to the 3rd wire (ground) of the
wall supply ( 120V) the items attached to the RF ground include the strike
ring,
bottom of the secondary, and the center ball of the safety gap.


Scot D