Re: Tesla Coil Firehazards (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- 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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