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Re: Safety gap issues



Original poster: "David Rieben" <drieben@xxxxxxxxxxxxxxx>

Hi JT,

Although there are many well educated engineer or
scientist types on this list, there are also a number of
high school and college students on this list as well.
Actually, there is probably pretty much the entire
spectrum represented on this list, both educationally
and experiencewise. I think the key is that, regardless
of your education and/or experience level, with an open mind, you can always learn something new. :^)

David Rieben


----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Sunday, November 27, 2005 11:10 AM
Subject: Re: Safety gap issues


Original poster: "JT Bowles" <jasotb@xxxxxxxxxxx>
....right...... I understand a little more now- but im not electrical engineers such as you guys. *I am a senior in highschool, people. So, even though ALL of you have good intentions, keep in mind im not as educated as you all, yet. I am trying to remember what 20+ people are telling me, in just two days' emails. Its hard. This doesnt mean I cant help out new people on this forum. I am still intelligent and experienced.
Thanks Gerry, ill try to understand.

From: "Tesla list" <tesla@xxxxxxxxxx>
To: tesla@xxxxxxxxxx
Subject: Re: Safety gap issues
Date: Sat, 26 Nov 2005 16:59:57 -0700

Original poster: "Gerry  Reynolds" <gerryreynolds@xxxxxxxxxxxxx>

JT, you're not listening. I said you can ONLY use 30KV/cm and a meter stick to calculate breakdown if it is a UNIFORM FIELD. This is rarely the case unless you have two parallel plates where the plate separation is small compared to the size of the plate. The 30KV/cm is a field strength the the air molicule experiences. This field strength may be present only in a very localized volume.

Gerry R.

Original poster: "JT Bowles" <jasotb@xxxxxxxxxxx>

You said:
"The breakdown for air is approximately 30KV per cm. This is a local field strength and if the field is uniform (constant) then you can measure the distance to find the total breakdown. The 25KV per inch you found probably assumes a geometry and applies to a short range of distances. "

Well holy crap, that throws ALL my measurements with high voltage off a lot. My sparkgap for example is set at 7.5 to 8 mm. That means my sparkgap is set at 22.5kV? NO WAY; MY TRANSFORMER OUTPUTS 12KV ONLY. SO, IF IT WERE SET AT 22.5 KV, IT WOULDNT FIRE WORTH CRAP.

THIS MEANS THE FORMULA:  1cm=30KV   cannot be correct

Thanks a ton for the help, but I THINK you're wrong buddy



From: "Tesla list" <tesla@xxxxxxxxxx>
To: tesla@xxxxxxxxxx
Subject: Re: Safety gap issues
Date: Fri, 25 Nov 2005 08:00:02 -0700
msnip...