[PRCo] Re: Cin

[Boris Cefer]

In Cincinnati the right hand wire was positive and the left hand wire
negative. The PCCs run the suburban sections with the left hand pole down.
As for the ZOO loop, I assume the left hand or center (negative wire) was
shared by both directions while the positive (outer wires) were for each
direction separate. That's also why the center wire does not have section
insulator while the outer wires do have. No polarity reversing.

----- Original Message -----
From: "Fred Schneider" <fwschneider at comcast.net>
To: <pittsburgh-railways at dementia.org>
Sent: Tuesday, January 16, 2007 4:58 PM
Subject: [PRCo] Re: Cin


> Sorry Boris, but it did work on PCCs.   It worked in Washington and
> it worked in Cincinnati.
>
> On Jan 16, 2007, at 10:54 AM, Boris Cefer wrote:
>
> > That might work on toys and old streetcars but not on a PCC where
> > the high
> > voltage and low voltage meet at some points, e.g. limit relay and
> > overload
> > relay.
> >
> > B
> >
> > ----- Original Message -----
> > From: "Fred Schneider" <fwschneider at comcast.net>
> > To: <pittsburgh-railways at dementia.org>
> > Sent: Tuesday, January 16, 2007 4:49 PM
> > Subject: [PRCo] Re: Cin
> >
> >
> >> No one has questioned it yet but before they do:  I would assume that
> >> the middle wire is the positive wire and the two outside wires are
> >> negative grounds but it doesn't matter.   Unlike model railroad
> >> motors with permanent magnets for a field, the trolley cars and
> >> trolley buses used series wound motors.   If you reversed the
> >> polarity of the field, you also reversed the polarity of the armature
> >> simultaneously and the car continued to run in the same direction.
> >> So reversing which wire was positive and which was negative had
> >> absolutely no affect.
> >>
> >
> >
>
>
>