Re: [TCML] live pigs on the ground

["Dr.Hankenstein" <dr.hankenstein@xxxxxxxxxxxxx>]

That's an old 3phase 480Volt 3-wire Delta service. Very rare these days as
most services are 4-wire wye 277/480 volts with the neutral grounded for
safety. I have seen services like this before....very scary indeed. Also;
240/480 volt secondaries are becoming obsolete for services because it is
much cheaper for a utility to buy only 120/240 or 277 volt xfmrs. A 240/480
volt xfmr cannot be used on a 277/480 wye service; but...a 277 volt xfmr
can provide both 277/480 wye or straight 480 volt, 3 phase delta service if
required, so you only need to buy two kinds of xfmrs: 

120/240 volts can provide the following depending on connection: 120/240
volts for lights and appliances, 120/208 volt wye or 120/240 volt 4 wire
delta (used for three phase and lights)

277 volts can provide the following depending on connection: 277/480 volt
wye or 480 volt delta.

240/480 volt transformers are generally connected only 480 volt delta. They
can be configured to provide other voltages not generally used in this
country.

Hope this provides some understanding.

Spark on!
Woo

dr.hankenstein@xxxxxxxxxxxxx
"We put the fire in the wire."


> [Original Message]
> From: David Rieben <drieben@xxxxxxxxxxx>
> To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
> Date: 1/2/2008 9:39:43 PM
> Subject: Re: [TCML] live pigs on the ground
>
> Marko,
>
> Yes, I've seen 3-phase service provided by live pigs
> in a setup like this before, although I think the ones
> that I've seen were generally older looking and I don't
> think that they were sitting on the bare ground but in-
> stead set on a concrete pad or a steel frame work
> support.
>
> David Rieben
>
> ----- Original Message ----- 
> From: "mark olson" <kc5gym@xxxxxxx>
> To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
> Sent: Wednesday, January 02, 2008 9:08 PM
> Subject: [TCML] live pigs on the ground
>
>
> > Hello all,
> >
> > I found these pigs in service at a building where I was doing chiller 
> > repairs.
> > Has anyone ever seen anything like this before?  It is a first for me.
> >
> >
> > http://members.cox.net/kc5gym
> >
> >
> >
> > Marko
> >
> > _______________________________________________
> > Tesla mailing list
> > Tesla@xxxxxxxxxxxxxx
> > http://www.pupman.com/mailman/listinfo/tesla
> > 
>
>
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxxxxxx
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