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Re: Tesla Coil Firehazards (Exploding paint cans) (fwd)
---------- Forwarded message ----------
Date: Sun, 12 Aug 2007 08:57:31 +0800
From: Peter Terren <pterren@xxxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: Tesla Coil Firehazards (Exploding paint cans)
I still don't believe you.
Your power of 125VA won't put a hole in aluminum foil let alone a steel or
aluminum high pressure can. Try it and see. Certainly didn't put a hole in
my tin foil helmet in my pool shots at 10 times the power and I was happy to
have my head underneath that without fear of injury.
I find it a little interesting that you were close enough to see that the
"streamer" made contact with the seam of the can "and then the paint (which
burns hot) flies everywhere and can catch your garage on fire". Did you
have any personal injury? Was your TC covered with burning paint. After all
it was only 26 inches away. When I make statements, I back them up with
photographic evidence. Do you still have your paint splashed TC? What
colour were the 2 paints. It must be starting to look quite technicolour by
now with the 2 colours plus black from the burning.
Having a "friend" who has had this happen "more often" is an untestable
statement. If he caught his garage on fire 3 or more times then he either
is unable to learn from experience or is a liar.
When I get my big TC back I will run 20 times your power onto some cans.
This will be sure to cause an explosion, wouldn't you agree. However, I am
quite sure I have no chance of breaking a weld.
BTW congratulations on the coil that way out-performs all others. Freau's
formula predicts 19 inches spark length and you got 26 inches. I don't
believe that either.
> ---------- Forwarded message ----------
> Date: Sat, 11 Aug 2007 08:58:42 -0700
> From: Nathan Stokely <50kva.54uf.750a@xxxxxxxxx>
> To: Tesla list <tesla@xxxxxxxxxx>
> Subject: Re: Tesla Coil Firehazards (fwd)
> The input power level of my coil was 125VA.
> The streamer length was approximately 26 inches.
> The streamer made contact on the seam of the can where the aluminum is
> connect when it is rolled into a can. The strike appeared to break the
> which holds the can together.
> I used to always keep my spray paint on the concrete floor. Now I keep it
> a wood cabinet.
> I have witnessed this twice in my garage, but I have a friend who has had
> this happen more often.
> On 8/11/07, Tesla list <tesla@xxxxxxxxxx> wrote:
>> ---------- Forwarded message ----------
>> Date: Fri, 10 Aug 2007 17:30:27 -0700
>> From: huil888 <huil888@xxxxxxxxxxxx>
>> To: Tesla list <tesla@xxxxxxxxxx>
>> Subject: Re: Tesla Coil Firehazards (fwd)
>> Nathan -
>> You wrote about the danger of aerosol containers "bursting" due to
>> from Tesla coil streamers. Further, you noted that you have encountered
>> "most often" with spray maint, implying that you have experienced burst
>> containers multiple times.
>> Can you provide more details on your experiences?
>> 1. What was the input power level of the coil, in VA?
>> 2. What was the streamer length that contacted the cans?
>> 3. Where on the can did the streamer make contact (and I assume melt a
>> through the steel shell)?
>> 4. Were the cans sitting on a grounded metal shelf, wooden shelf, cement
>> floor, etc.
>> 5. How many times have you personally witnessed bursting/flaming cans?
>> If pressurized spray pain cans can indeed explode when contacted by Tesla
>> coil streamers, then all coilers who run their coils in their garages or
>> workshops should be made aware of this danger.
>> Scott Hanson
>> I'm very interested in understanding the specific conditions that
>> > Also, strikes to aerosol containers (such as bug spray, spray paint, or
>> > anything else you have where you operate your coil) can cause the
>> > hydrocarbon fuel in the aerosol to rapidly expand bursting the can and
>> > causing a flash fire. I have encountered this with spray paint the most
>> > often. The can will explode and then the paint (which burns hot) flies
>> > everywhere and can catch your garage on fire. Always stay away from
>> > aerosols
>> and fuels while operating a coil.