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Subject: Re: [Homebrew_PCBs] drill pcb

From: rolohar@...
Date: 2016-02-25

Please remember that most domestic and industrial power outlets, etc., are designed to provide
ISOLATION between the user and the electrical power "within".

Ever hear of Underwriters Laboratory, and the many other private and government organizations
that devote a lot of time and money to assure that the ISOLATION is adequate for all of us,
and who test, inspect, and approve such apparatus for ISOLATION safety.
There will be exceptions........ those moronics among us that stick knives and forks and paper clips into the
power outlets.

Yes Virginia...........ISOLATION is real.

Roland F. Harriston, P.D.
∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗

From: "Jean-Paul Louis louijp@... [Homebrew_PCBs]" <Homebrew_PCBs@yahoogroups.com>
To: "Homebrew PCBs" <Homebrew_PCBs@yahoogroups.com>
Sent: Thursday, February 25, 2016 2:56:31 PM
Subject: Re: [Homebrew_PCBs] drill pcb

 

Additional warning for rolohar@...:

Do not use a candle, you could burn yourself to death. Instead wait for day light, it will be safer.

and as pierreraymondrondelle said
“Please, don't take this as a criticism but as a recommendation instead.

>
Good luck"

Jean-Paul
N1JPL

> On Feb 25, 2016, at 1:43 PM, pierreraymondrondelle pierreraymondrondelle@... [Homebrew_PCBs] <Homebrew_PCBs@yahoogroups.com> wrote:
>
> Keep in bed, both hands flat on the mattress. Should you need light, use a candle, of course matches aren't for you, ask a nurse !
> Wall switches, sockets and usual devices powered by the mains are far too dangerous for you !
> Please, don't take this as a criticism but as a recommendation instead.
>
> Good luck
>
>
>
> On 25.02.16 06:30, rolohar@... [Homebrew_PCBs] wrote:
>>
>> YOU ALWAYS NEED "SAFETY" WHEN WORKING WITH POWER LINE ELECTRICITY!
>>
>> TV "cheater cords" once used in repairing TV sets were known as "Suicide Cords" because the defeated the
>> isolation between the TV set and the power outlet.
>>
>> Autotransformers and Variacs are often referred to as "Widow Makers" because they also do not isolate the
>> user from being exposed to the full potential of the voltage source.......be it 120 or 220 or whatever.
>>
>> Mark My Words!
>>
>> Get a step-up or step-down transformer that has the primary winding completely isolated from the
>> secondary winding and works on the concept of INDUCTION rather that direct hard wired connection
>> to whatever power source you are using.
>>
>> Regards,
>>
>> RFH
>
>