Re: [TCML] Pole Pig Question

[David Rieben <drieben@xxxxxxx>]

Hi Jeremy,

Actually, you can run a pig "backwards" on either 120 or 240 volts. The three low voltage bushings that you see on the side of the tank are simply a 240 volt output (or input for coilers) with a usually tank-grounded center tap: 120-0-120. However, keep in mind that you will need to remove that center terminal grounding strap to the tank if you run 240 volts in, which is what most pig coilers do. If you decide to run it on 120 volts input, you can leave the grounding strap in place and connect the white return lead to it and the black "hot" lead to either of the other outer terminals. The draw back with the 120 volt input versus the 240 volt input is that it will draw twice the amperage for the same output, so if you're trying to drive say 10 kVA, what would require 50 amp service with a 240 volt input would require 100 amp service with a 120 volt input. 

David

Jeremy Gassmann <jeremyee78@xxxxxxxxx> wrote:

>Hi,
>    Another question related to this post...I am currently in the process
>of building a house and want to prewire an outside outlet for a future pig.
>I was planning on a 50A/120V outlet but this post got me wondering...what
>is more common with pigs, 120V or 240V? Should I run a 240V line instead?
>Thanks a lot!
>
>Jeremy
>On Jul 25, 2013 8:14 AM, "McCauley, Daniel H" <daniel.h.mccauley@xxxxxxxx>
>wrote:
>
>> They should say 14.4kV on the nameplate.
>>
>> If the transformer has 7.2kV on the nameplate, its just that - 7.2kV.
>>  7.2kV is another common primary voltage for these transformers.
>>
>> You would probably want a 14.4kV/240V 5kVA or 10kVA unit.  The 3kVA units
>> are "small and cute" but harder to find.
>>
>> Dan
>>
>> -----Original Message-----
>> From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On
>> Behalf Of Miles Mauldin
>> Sent: Thursday, July 25, 2013 7:03 AM
>> To: Tesla Coil Mailing List
>> Subject: EXTERNAL: [TCML] Pole Pig Question
>>
>> Hi all,
>>
>> I am in the market for a pole pig, and my first choice is a dual horn, HV
>> 14400, LV 120/240. I se several different voltage combinations and am
>> wondering what are the differences.  My biggest question is why some of the
>> 7200 HV units don't list 14400 as the total HV? If this information is in
>> the archives please direct to its location.
>>
>> 7970/13800Y
>> 7200/12470Y
>>
>> Continue to enjoy all the expert posters and information provided.
>>
>> Thanks!
>> Miles Mauldin
>>
>> Sent from a little device with a tiny keyboard.
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