Re: electrical deaths

On Tue, 3 Dec 2024 19:23:41 -0800, Joerg <news@analogconsultants.com>
wrote:

On 12/3/24 9:16 AM, Joe Gwinn wrote:

On Tue, 3 Dec 2024 12:10:54 +0100, Arie de Muijnck <noreply@ademu.nl>
wrote:
 

On 2024-12-03 00:20, Joe Gwinn wrote:
>
.....

>
I don't either, because the approved euro terminal strips don't
provide plates for the smaller wire sizes.  I also use the euro
terminal strips inside appliances, and if I'm connecting finely
stranded wire, I tin the wire with 63-37 solder to consolidate it, and
clamp that.
>
Joe Gwinn

>
>
DON'T! The tin will flow slowly under pressure, and loose the connection.
It was a common habit in the Netherlands until forbidden. With a reason.

 
Yes, I know.  Only done for small wires at low power.
 

>
If it's mains stuff the arcing can still spark a fire. I've had numerous
cases where I found signal or control wires were tinned and then
clamped, and the connections failed or became erratic. Usually after
many years.
>
[...]

I once rode a big LASH ship from San Francisco to San Pedro to find
one loose screw on a terminal strip. It was the tach feedback on a
32,000 horespower steam turbine.

I had designed the control system about a decade before that trip,
when I was still a Tulane student.

I used a nonlinear function function generator from the throttle lever
to the main steam valve, with a limited range of PID RPM feedback.
That limited range prevented what could have been serious if the tach
failed.

The trip was fun, tugboat rides both ends, my own cabin, good food,
treated by the crew as an honored guest, performing a miracle with a
small screwdriver.