Re: Tesla Coil Firehazards (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Fri, 31 Aug 2007 08:15:17 -0800
From: Jonathan Peakall <jpeakall@xxxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: Tesla Coil Firehazards (fwd)

Most C class FE's are no longer co2, they are ususally a dry chemical. Co2 
is being slowy phased out for general C class use, although they are still 
around in significant numbers.

Jonathan (ALRVFD)
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Some people are like a Slinky .. not really good for anything,
but you still can't help but smile when you shove them down the stairs.
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----- Original Message ----- 
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Thursday, August 30, 2007 7:46 PM
Subject: Re: Tesla Coil Firehazards (fwd)


> ---------- Forwarded message ----------
> Date: Thu, 30 Aug 2007 20:49:25 -0700
> From: Frank <fxrays@xxxxxxxxxx>
> To: Tesla list <tesla@xxxxxxxxxx>
> Subject: Re: Tesla Coil Firehazards (fwd)
>
> Usually a C class extinguisher is CO2 which is only effective in an
> enclosed space where there is no air supply so it can smother a fire.
> The space has to be small or the gas is disbursed and it is not
> effective. If you are in the space, you get smothered too! A hand
> held extinguisher for C fires will not be too effective in a garage or 
> outside.
> CO2 is typically used for confined spaces that the ventilation can be
> shut down and there is a bank of large cylinders that is discharged.
> The number of cylinders is calculated for the space volume. Common on
> ships for the switchgear and engine rooms.
>
> Class B extinguishers are usually dry chemical and can be used on C
> or electrical fires, it just makes a huge mess! They are also used on
> small class A  fires. Look for ABC on the label.
> This is the best all around extinguisher to have in your home,
> garage, shop and etc. A mess is a lot better to clean up than burning 
> down!
>
> Water can and is used on hydrocarbon fires a lot. It takes training
> and LOTS of water and is the prime fire fighting agent on ships.
>
> There is a system designed that uses water for electrical fires too
> and it is used on high tension switch gear.
>
> Make sure your coil has a remote safety cut out for the power. This
> can be as simple as an extension cord or two where the plug is in a
> "safe" area.
>
> Have a couple 5 pound dry chem extinguishers around at all times and
> keep them near the exits of the space, preferably one on each side of
> the exit. Cheap insurance, not only for running coils, but protecting
> your home as well. They are not expensive.
>
> Frank
> At 08:31 PM 8/30/2007 -0600, you wrote:
>
>>---------- Forwarded message ----------
>>Date: Fri, 31 Aug 2007 07:35:39 +1000
>>From: T476202 A. Wang 2007 <tangara_02@xxxxxxxxxxx>
>>To: tesla@xxxxxxxxxx
>>Subject: Re: Tesla Coil Firehazards (fwd)
>>
>>In Australia its type E for electrical fires. C is flammable gases...
>>
>>
>> >From: "Tesla list" <tesla@xxxxxxxxxx>
>> >To: tesla@xxxxxxxxxx
>> >Subject: Re: Tesla Coil Firehazards (fwd)
>> >Date: Thu, 30 Aug 2007 07:53:31 -0600 (MDT)
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>> >
>> >---------- Forwarded message ----------
>> >Date: Wed, 29 Aug 2007 19:25:55 +0000
>> >From: David Rieben <drieben@xxxxxxxxxxx>
>> >To: Tesla list <tesla@xxxxxxxxxx>
>> >Cc: drieben@xxxxxxxxxxx
>> >Subject: Re: Tesla Coil Firehazards (fwd)
>> >
>> >Hi Dave, all,
>> >
>> >As a professional firefighter for nearly 19 years now (and it's been 
>> >just
>> >about that long since I've had any schooling on fire extenguishers ;^),
>> >it's
>> >my understanding that the classes of fire extinguisher go like this:
>> >
>> >Class A - wood, paper, and textile products fires
>> >Class B - petroleum product fires
>> >Class C - electrical fires
>> >Class D - combustible metal fires
>> >
>> >The type of fires that a commercial fire extinguisher is designed
>> >to put out is labeled on the the side of the fire extinguisher. Since
>> >most A class only fire extinguishers are charged with water, it's ob-
>> >vious that you would not want to squirt it on a fire with liquid 
>> >petroleum
>> >products or certainly not live eletrical equipment involved! Also, many
>> >combustible metals (sodum, potassium, magnesium, ect.) are water
>> >reactive and the introduction of water to a fire involving these could
>> >actually worsen the situation (anyone who's ever dropped a lump of pure
>> >sodium metal into a beaker of water can attest to this!).
>> >
>> >Bottom line, the proper fire extenguisher for your high voltage
>> >projects shop should be suitable for class C electrical fires, since
>> >you may not have time to "throw the switch" before attempting 
>> >extingusih-
>> >ment. Most dry powder and CO2 fire extinguishers are suitable for Class
>> >A, B, and C type fires. Due to its physical properties such as high
>> >specific heat, surface tension, and low viscocity, water is by far
>> >the universal fire fighting agent, but there are definitely some
>> >situtations
>> >in which water is NOT the suitable extinguishment agent!
>> >
>> >
>> >--
>> >David Rieben
>> >
>> >-------------- Original message --------------
>> >From: "Tesla list" <tesla@xxxxxxxxxx>
>> >
>> > >
>> > > ---------- Forwarded message ----------
>> > > Date: Tue, 28 Aug 2007 11:08:59 -0400
>> > > From: Dave Pierson
>> > > To: Tesla list
>> > > Subject: Re: Tesla Coil Firehazards (fwd)
>> > >
>> > >
>> > > >>Tesla's lab burned down and he had a huge spiderweb coil running 24
>> > > >>hrs/ day. Perhaps his coil was the reason.hrs/ day. Perhaps his 
>> > > >>coil
>> >was the
>> > > reason."
>> > >
>> > > > What's the source for that information, in particular the 24 hours 
>> > > > a
>> >day
>> > > bit?
>> > > > Can't imagine any reason to do that.
>> > >
>> > > One might also ask which lab, where, when?
>> > >
>> > > Back to the (valid) reccomen=mendation to have a fire extinguisher
>> >handy:
>> > > Be familiar with the TYPES of extinsuishers, some are rated for
>> >electrical
>> > > fires, some not. (I think its 'Type C' for 'all fires', but may be
>> >rong.)
>> > >
>> > > Ideally, kill power before using, however there may not be time, the
>> > > 'right'
>> > > extinguisher may be important.
>> > >
>> > > best
>> > > dwp
>> > >
>> > >
>> > >
>> >
>> >
>>
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