[PRCo] Re: Ground currents

[Jim Holland]

Good Morning!


> Boris Cefer wrote:

> Hello!
> Did Pittsburgh trolleys use any network of
> cables to conduit back current from car tracks
> to substations?     Ground currents cause
> electrolysis which might result in severe
> damage to various piping (water and gas) laid
> under ground.    Cincinnati used double
> overhead, which was the same, in fact, but easy
> to maintain. We have been using large network
> of back current cables laid under groung in
> this country, because this arrangement is
> required by our national technical standards.
> Each transit company has to make an adequate
> provision to protect others from ground
> currents from its streetcars. I was told that
> it is "throwing money away" and that in the US
> doesn't exist any such requirement. Is it true?

	Going to hazard a guess.

	Had a discussion some time back, believe
Bob Rathke kicked it off, where out of service
trackage was maintained in  ({[pat]})  era
just for ground purposes.     Believe it was
Second Ave which was kept after 53-line
permanently rerouted thru tunnel  And  Possibly
even after 53-line discontinued.



<><><><><><><><><><><><><><><><><><><><>

JB

<><><><><><><><><><><><><><><><><><><><>