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Re: [TCML] Greenhorn Coiler
I don't think anyone here is suggesting that one should not be
extremely careful when working with any kind of high voltage
equipment. I definitely agree with what you say about the buddy
system.
On Wed, Jun 11, 2008 at 5:36 PM, <Mddeming@xxxxxxx> wrote:
>
>
> Hi Greg, All,
> I have to agree with the statistics, but cannot endorse the cavalier
> attitude behind them. For example, statistically, in playing Russian roulette,
> you are playing "with the odds tipped strongly in favor of survival" as you
> say, but IMO, it should be argued against with utmost vehemence, because of
> the consequences of that one chance in six. This is especially true when
> putting out information to extremely inexperienced people who will most likely be
> working without supervision or assistance of any kind. Many new coilers do not
> use the "buddy system".
> One has to be mindful of both the audience and the intent when defining
> dangers. As a pharmacological example. I took a course back in the 60's where
> a lethal dose was considered that level where mortality reached 50%, i.e.
> where one half of the people taking that dose would not die. One could argue,
> quite logically, that ingesting less than the lethal dose of arsenic or
> strychnine would be acting "with the odds tipped in favor of survival", but
> telling kids in high school chemistry that "small doses probably OK" is not my
> concept of responsible behavior.
>
> YOMV,
>
> Matt D.
>
> In a message dated 6/11/08 11:21:14 A.M. Eastern Daylight Time,
> dogbrain_39560@xxxxxxxxx writes:
>
>> a 12-15Kv 30 mA unit would be a standard choice. ( if you
>> get shocked by
>> this transformer there is a chance you will live, anything
>> larger and
>> the chance drops to 0).
>> Scot D
>
> I strongly disagree. It's inaccurate to declare that any shock over 30 mA
> gives zero chance of survival. Were that true, I probably would have died two
> or three times by now. I'm sure several of my fellow list members can
> recall painful, but non-lethal incidents in their professional and/or hobby
> endeavors.
>
> I'm not a physician, but I do teach basic electronics using professionally
> prepared materials. According to USAF doctrine, the lethality of an electric
> shock is determined by numerous variables including the part of the body that
> receives the shock, the age and physical condition of the victim, the
> duration of the shock, the amount of current, and the promptness of emergency
> medical treatment.
>
> Under tragically ideal conditions, 120 vac might kill an unfortunate
> homeowner, while a power line worker who gets his hands blown off by contact with a
> 66kv line survives. I have survived very uncomfortable shocks from 115
> vac/400 Hz aircraft current, as well as fierce "bites" from NST's, while the
> national news outlets report several Taser (only 2-7 mA) fatalities every year.
> Likewise, how often have we read about a lucky golfer who survives a lightning
> strike with nothing worse than a painful flash burn!
>
> Except under carefully staged conditions, (like an electric chair!), a HV
> electric shock is a crap shoot, with the odds tipped strongly in favor of
> survival. I know many people who have been shocked, but I don't know anyone who
> has died of electrocution in my professional, social, or family circles.
>
> I'm all for preaching safety, but the dangers shouldn't be overstated any
> more than they should be understated.
>
> Cheers,
>
> Greg
>
>
>
>
>
>
>
>
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