Re: [PSES] Interview Questions

2012-07-04 Thread Cortland Richmond
To keep people from stealing the bulbs? Heh. Wikipedia says 110 or 120 V are used for traction on a couple of lines, most higher, some MUCH higher. Perhaps I'd have learned more if I'd gotten the job at Kawasaki's New York railcar facility. http://en.wikipedia.org/wiki/Railway_electrification

Re: [PSES] Interview Questions

2012-07-04 Thread Ted Eckert
I think Ken is on the right track. Railroad signally and portable equipment both represent areas where there is a higher risk of exposed connections. Receiving a shock from 110V is unpleasant, but it is less likely to lead to significant harm than a 240 V shock. I've contacted 110V a number of t

Re: [PSES] Interview Questions

2012-07-04 Thread IBM Ken
It's safer! :-P :-D On Wed, Jul 4, 2012 at 12:28 PM, Scott Xe wrote: > Hi Andy, > > Is there any particular reasons to have 110 Vac for railway signalling > system in a 230/240 Vac country? > > Scott > > > On 4/7/12 3:10 PM, "Andrew McCallum" > wrote: > > > The UK railway signalling system all

Re: [PSES] Interview Questions

2012-07-04 Thread Scott Xe
Hi Andy, Is there any particular reasons to have 110 Vac for railway signalling system in a 230/240 Vac country? Scott On 4/7/12 3:10 PM, "Andrew McCallum" wrote: > The UK railway signalling system all runs at 110 V AC 50 HZ > Andy > > -Original Message- > From: John Woodgate [mailto

Re: [PSES] Interview Questions

2012-07-04 Thread Andrew McCallum
The UK railway signalling system all runs at 110 V AC 50 HZ Andy -Original Message- From: John Woodgate [mailto:j...@jmwa.demon.co.uk] Sent: 03 July 2012 21:17 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: Interview Questions In message , dated Tue, 3 Jul 2012, IBM Ken writes: >PS: Who o