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Re: [TCML] NIST High Voltage Laboratory Testing / Safety Reference



Can we please get a title on this thread that relates even in some small way to the topic being discussed? I think the original topic (electrical safety standards & equipment) got lost days ago.

Matt D


-----Original Message-----
From: Miles Mauldin <TeslaMiles@xxxxxxx>
To: Yurtle Turtle <yurtle_t@xxxxxxxxx>; Tesla Coil Mailing List <tesla@xxxxxxxxxx>
Sent: Tue, Sep 2, 2014 9:21 am
Subject: Re: [TCML] NIST High Voltage Laboratory Testing / Safety Reference


Do you have any photos/videos of your coil in operation?

Best Regards,
Miles

Sent from a mobile device with a tiny keyboard. 

> On Sep 2, 2014, at 5:21 AM, Yurtle Turtle via Tesla <tesla@xxxxxxxxxx> wrote:
> 
> I push 280 volts at 100 amps into my 25 kVA 14.4 kV piggy all the time. The 
ground hog that feeds me and several neighbors is 25 kVA, and that's assuming 
Arizona heat. For limited duty cycles, it can easily handle my load. I use two 
1256s with three fans for cooling.
> 
> I easily move mine around the garage. I cut down the pole it was mounted on, 
and landed it with not even a scratch. Used 2"x12" ramps and a hand truck to 
take it home, and to move it to our current home.
> 
> 
> 
> ________________________________
> From: David Speck <Dave@xxxxxxxxxxxxxxxx>
> To: Tesla Coil Mailing List <tesla@xxxxxxxxxx> 
> Sent: Monday, September 1, 2014 10:47 AM
> Subject: Re: [TCML] NIST High Voltage Laboratory Testing / Safety Reference
> 
> 
> Bob,
> 
> Glad to help.  Feel free to ask any more questions you might have.
> 
> There are several photos of a semi trailer full of pole pigs in Yurtle's 
> photo set, but it was not clear to me that he was actually going to use 
> one of those in his setup.
> 
> Upon closer inspection, I see a label of "25" on one of them at the 
> lower left side of the trailer, indicating a probable 25 KVA rating.  A 
> 200 amp household utility service at 240 VAC could theoretically provide 
> 24 KVA at the maximum rating, but you would need a really big Variac, 
> power control system, and inductive ballast to use one of those at its 
> full power rating.
> 
> You can certainly use a pole transformer at less than its max ratings, 
> and can actually push them to 50% or even 100% over their nameplate 
> ratings for a short time.  Only problem is that a transformer of this 
> size probably weighs 500# - 700#, so wrangling it becomes a problem.  
> You wouldn't want to drop one of those on your foot.
> 
> Dave


 
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