[PRCo] Re: 1700-series PCC Interurban TrolleyCars

[Boris Cefer]

It was strictly prohibited on some properties to set the switch by power 
application because it causes burning to the overhead contactor and may 
cause also further damage to the track setting circuits. Pushing the track 
switch button limits the setting current to +/- 70 amperes while power 
application is always higher than 220 amperes.

B

----- Original Message ----- 
From: "Mark McGuire" <macmarka at netzero.net>
To: <pittsburgh-railways at dementia.org>
Sent: Sunday, September 30, 2007 6:30 PM
Subject: [PRCo] Re: 1700-series PCC Interurban TrolleyCars


> Now please explain to a rookie what the track switch is for. I thought the 
> switches were controled by either coasting through or applying power. Was 
> this button mainly used in the older days?