Re: Pickup trucks for city boys

From	"Carlos E.R." <robin_listas@es.invalid>
Newsgroups	comp.os.linux.misc, alt.comp.os.windows-11
Subject	Re: Pickup trucks for city boys
Date	2025-08-28 21:27 +0200
Message-ID	<d6n6olx08p.ln2@Telcontar.valinor> (permalink)
References	(22 earlier) <108moro$ktk8$1@dont-email.me> <108muat$m6bo$1@dont-email.me> <f5icnUXbt_1ufTL1nZ2dnZfqn_qdnZ2d@giganews.com> <f6r5olx0lg.ln2@Telcontar.valinor> <6P6cndY_yqfjxS31nZ2dnZfqn_SdnZ2d@giganews.com>

Cross-posted to 2 groups.

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On 2025-08-28 15:24, c186282 wrote:
> On 8/28/25 7:29 AM, Carlos E.R. wrote:
>> On 2025-08-28 06:53, c186282 wrote:
>>> On 8/27/25 8:40 AM, Daniel70 wrote:
>>>> On 27/08/2025 9:06 pm, Graham J wrote:
>>>>> Paul wrote:
>>>>>
>>>>> [snip useful figures]

...

>>>    120v requires slightly larger wires. You WANT 12ga but
>>>    beware cheap-ass contractors who try to sneak in 14ga
>>>    to save a few bucks. On the plus, 120v is less dangerous
>>>    than 240v.
>>
>> Except fire-wise :-)
> 
> 
>    Only if you let the contractor fudge it :-)
> 
>    If building a brand new house now I'd insist
>    on 10ga for 20a breakers - a fair safety margin.
>    Very worth the slight extra expense.
> 
>    A guy I know CAUGHT the contractor putting 14ga
>    on 20a circuits - made him tear it all out and
>    do-over. NEVER count on 'inspectors' - they
>    don't WANT to see anything and some get brown
>    envelopes full of cash too.

Good.

On most places, I guess the connections are not soldered, and rust is a 
possibility. Then there are sockets and switches. They can heat up after 
some years.


> 
>    My existing house is OLD - early '50s. Most of
>    the original wiring was twist+SOLDER splices
>    and industrial Romex and most is also in metal
>    conduit. Don't know HOW they did solder in the
>    old days - giant iron, pot ? DOES bar oxygen and
>    corrosion though. The builder built it for HIMSELF
>    and did live there for a few years.

I re-wired part of my house, cables are soldered except at some points 
when they go into some device.


...

>>>    Oh, for DATA wiring - like RS-485 and friends - you
>>>    only connect the ground on ONE end because over some
>>>    hundreds or thousands of feet the value of 'ground'
>>>    is DIFFERENT. Large, albeit low voltage, currents
>>>    can be obtained from separated grounds. Always
>>>    thought that might be exploited somehow.
>>
>> Oh, I know that one, learned early. I did that trick on the loud- 
>> speaker system of a student venue. I managed long microphone cables 
>> without hum.
>>
>>
>> On my first job, I experienced a related one. Me or my boss connected 
>> a printer (parallel cable) to a computer, saw a tiny spark. Sure 
>> enough, the printer port on the computer was fried. I measured the 
>> voltage at the computer chasis: 110ac, half the mains voltage. A 
>> subproduct of the PSU filtering.
>>
>> The computer was not grounded. Taught my boss the importance of 
>> grounding the computers from then on.
> 
>    Differing ground potential IS an issue - esp with
>    communication circuits. Can burn those tiny wires.
> 
>>>    Anyway, that's my 45+ years of paycheck experience.
>>>
>>>    Suggest "Ugly's" handbook for the short and sweet.
>>
>> :-)
> 
>    Got a copy of "Ugly's" ?  :-)

Oops, I was smiling at the previous sentence actually :-)

> 
>    There are a few other good field guides, but
>    DO love the name "Ugly's".


-- 
Cheers, Carlos.

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