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Groups > comp.os.linux.misc > #72880

Soldered connections.

From "Carlos E.R." <robin_listas@es.invalid>
Newsgroups comp.os.linux.misc, alt.comp.os.windows-11
Subject Soldered connections.
Date 2025-09-01 11:58 +0200
Message-ID <ca7golx666.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 21:27, Carlos E.R. wrote:
> 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.

And now I have learned that soldered connections are prohibited by the 
code in most of the EU. It is considered dangerous.

For an explanation, I had to ask chatgpt. I asked again (the original 
answer is gone from my browser), the answer is slightly different:


Q: Could you explain why the electric code in the EU prohibits soldered 
connections? English, please.

Yes, absolutely. In the **EU**, soldered connections are **not 
completely prohibited**, but their use is **restricted or discouraged** 
in **certain permanent wiring installations**, especially in fixed 
electrical systems like household or commercial building wiring.

Here’s **why**:

---

### 🔧 **Soldered Connections Can Be Mechanically Weak**

* **Solder alone doesn't provide strong mechanical strength.**
   If a wire is only soldered (without a mechanical connector like a 
terminal block or screw clamp), the connection can **break or loosen** 
under stress, vibration, or heat cycles.

* **Solder can deform over time.**
   It softens at relatively low temperatures. If the connection heats up 
(even slightly under normal use), the solder may **creep** or **change 
shape**, causing a loose or unreliable connection.

---

### 🔥 **Fire Safety & Overheating Risks**

* A **loose connection** increases electrical resistance, which can 
generate heat.
* Over time, this can cause **overheating**, **insulation damage**, or 
even **fire**.
* Because soldered joints are more likely to loosen, they are 
**considered less safe** in fixed installations where ongoing 
maintenance isn’t practical.

---

### 📘 **EU Wiring Standards – Specifically EN 60364 / IEC 60364**

* These are the European and international standards for electrical 
installations.
* They require that connections be **"durable, mechanically secure, and 
protected against stress."**
* **Screw terminals, spring clamps, crimp connectors,** and other 
mechanical fasteners are **approved methods** because they ensure 
strong, reliable connections.

---

### ✔️ OK in Electronics, Not in Fixed Wiring

* **Soldering is perfectly fine** and standard in **circuit boards**, 
electronics, and small appliances.
* But in **fixed electrical wiring** (e.g. behind your walls), 
**soldering is discouraged or banned** as the sole method of connection.

---

### ✅ Bottom Line:

 > The EU restricts soldered connections in permanent wiring **because 
they are not mechanically reliable on their own**. Safe connections must 
be both **electrically sound** and **mechanically strong**, which solder 
alone doesn’t guarantee.

Let me know if you'd like references from the standards or help with 
specific national codes like the UK’s BS 7671 (IET Wiring Regulations).





-- 
Cheers, Carlos.

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Thread

Re: Pickup trucks for city boys Paul <nospam@needed.invalid> - 2025-08-27 06:10 -0400
  Re: Pickup trucks for city boys Graham J <nobody@nowhere.co.uk> - 2025-08-27 12:06 +0100
    Re: Pickup trucks for city boys Daniel70 <daniel47@somewhere.someplaceelse> - 2025-08-27 22:40 +1000
      Re: Pickup trucks for city boys "Carlos E.R." <robin_listas@es.invalid> - 2025-08-27 16:20 +0200
        Re: Pickup trucks for city boys Char Jackson <none@none.invalid> - 2025-08-27 13:18 -0500
          Re: Pickup trucks for city boys "Carlos E.R." <robin_listas@es.invalid> - 2025-08-27 20:42 +0200
            Re: Pickup trucks for city boys The Natural Philosopher <tnp@invalid.invalid> - 2025-08-27 19:49 +0100
              Re: Pickup trucks for city boys "Carlos E.R." <robin_listas@es.invalid> - 2025-08-27 21:57 +0200
            Re: Pickup trucks for city boys rbowman <bowman@montana.com> - 2025-08-27 21:43 +0000
              Re: Pickup trucks for city boys "Carlos E.R." <robin_listas@es.invalid> - 2025-08-28 00:38 +0200
        Re: Pickup trucks for city boys Daniel70 <daniel47@somewhere.someplaceelse> - 2025-08-28 21:28 +1000
          Re: Pickup trucks for city boys The Natural Philosopher <tnp@invalid.invalid> - 2025-08-28 12:35 +0100
            Re: Pickup trucks for city boys Daniel70 <daniel47@somewhere.someplaceelse> - 2025-08-28 22:15 +1000
              Re: Pickup trucks for city boys c186282 <c186282@nnada.net> - 2025-08-28 10:18 -0400
              Re: Pickup trucks for city boys The Natural Philosopher <tnp@invalid.invalid> - 2025-08-28 17:34 +0100
            Re: Pickup trucks for city boys c186282 <c186282@nnada.net> - 2025-08-28 09:57 -0400
          Re: Pickup trucks for city boys not@telling.you.invalid (Computer Nerd Kev) - 2025-08-29 08:52 +1000
            Re: Pickup trucks for city boys rbowman <bowman@montana.com> - 2025-08-28 23:56 +0000
              Re: Pickup trucks for city boys The Natural Philosopher <tnp@invalid.invalid> - 2025-08-29 11:16 +0100
                Re: Pickup trucks for city boys not@telling.you.invalid (Computer Nerd Kev) - 2025-08-30 09:58 +1000
                Re: Pickup trucks for city boys The Natural Philosopher <tnp@invalid.invalid> - 2025-08-30 08:08 +0100
                Re: Pickup trucks for city boys "Carlos E.R." <robin_listas@es.invalid> - 2025-08-31 14:26 +0200
            Re: Pickup trucks for city boys The Natural Philosopher <tnp@invalid.invalid> - 2025-08-29 11:14 +0100
              Re: Pickup trucks for city boys Daniel70 <daniel47@somewhere.someplaceelse> - 2025-08-29 21:27 +1000
                Re: Pickup trucks for city boys The Natural Philosopher <tnp@invalid.invalid> - 2025-08-29 13:21 +0100
                Re: Pickup trucks for city boys doctor@doctor.nl2k.ab.ca (The Doctor) - 2025-08-29 14:04 +0000
              Re: Pickup trucks for city boys not@telling.you.invalid (Computer Nerd Kev) - 2025-08-30 10:18 +1000
                Re: Pickup trucks for city boys Daniel70 <daniel47@somewhere.someplaceelse> - 2025-08-30 22:47 +1000
            Re: Pickup trucks for city boys Daniel70 <daniel47@somewhere.someplaceelse> - 2025-08-29 20:26 +1000
              Re: Pickup trucks for city boys not@telling.you.invalid (Computer Nerd Kev) - 2025-08-30 10:28 +1000
                Re: Pickup trucks for city boys rbowman <bowman@montana.com> - 2025-08-30 05:15 +0000
                Re: Pickup trucks for city boys c186282 <c186282@nnada.net> - 2025-08-30 02:02 -0400
                Re: Pickup trucks for city boys rbowman <bowman@montana.com> - 2025-08-30 20:14 +0000
                Re: Pickup trucks for city boys The Natural Philosopher <tnp@invalid.invalid> - 2025-08-30 08:10 +0100
                Re: Pickup trucks for city boys Computer Nerd Kev <not@telling.you.invalid> - 2025-08-30 18:37 +1000
                Re: Pickup trucks for city boys Daniel70 <daniel47@somewhere.someplaceelse> - 2025-08-30 23:03 +1000
                Re: Pickup trucks for city boys rbowman <bowman@montana.com> - 2025-08-30 19:05 +0000
                Re: Pickup trucks for city boys not@telling.you.invalid (Computer Nerd Kev) - 2025-08-31 09:07 +1000
                Re: Pickup trucks for city boys rbowman <bowman@montana.com> - 2025-08-31 03:41 +0000
                Re: Pickup trucks for city boys rbowman <bowman@montana.com> - 2025-08-30 18:55 +0000
                Re: Pickup trucks for city boys Daniel70 <daniel47@somewhere.someplaceelse> - 2025-08-30 22:54 +1000
      Re: Pickup trucks for city boys The Natural Philosopher <tnp@invalid.invalid> - 2025-08-27 16:37 +0100
        Re: Pickup trucks for city boys "Carlos E.R." <robin_listas@es.invalid> - 2025-08-27 20:40 +0200
          Re: Pickup trucks for city boys The Natural Philosopher <tnp@invalid.invalid> - 2025-08-27 19:47 +0100
        Re: Pickup trucks for city boys rbowman <bowman@montana.com> - 2025-08-27 21:45 +0000
        Re: Pickup trucks for city boys c186282 <c186282@nnada.net> - 2025-08-28 03:27 -0400
      Re: Pickup trucks for city boys Bobbie Sellers <bliss-sf4ever@dslextreme.com> - 2025-08-27 13:17 -0700
        Re: Pickup trucks for city boys rbowman <bowman@montana.com> - 2025-08-28 03:31 +0000
      Re: Pickup trucks for city boys rbowman <bowman@montana.com> - 2025-08-27 21:26 +0000
      Re: Pickup trucks for city boys c186282 <c186282@nnada.net> - 2025-08-28 00:53 -0400
        Re: Pickup trucks for city boys "Carlos E.R." <robin_listas@es.invalid> - 2025-08-28 13:29 +0200
          Re: Pickup trucks for city boys c186282 <c186282@nnada.net> - 2025-08-28 09:24 -0400
            Re: Pickup trucks for city boys rbowman <bowman@montana.com> - 2025-08-28 18:30 +0000
            Re: Pickup trucks for city boys "Carlos E.R." <robin_listas@es.invalid> - 2025-08-28 21:27 +0200
              Re: Pickup trucks for city boys rbowman <bowman@montana.com> - 2025-08-28 23:13 +0000
                Re: Pickup trucks for city boys "Carlos E.R." <robin_listas@es.invalid> - 2025-08-29 15:06 +0200
                Re: Pickup trucks for city boys The Natural Philosopher <tnp@invalid.invalid> - 2025-08-29 19:01 +0100
                Re: Pickup trucks for city boys rbowman <bowman@montana.com> - 2025-08-29 18:09 +0000
                Re: Pickup trucks for city boys The Natural Philosopher <tnp@invalid.invalid> - 2025-08-29 19:51 +0100
                Re: Pickup trucks for city boys "Carlos E.R." <robin_listas@es.invalid> - 2025-08-29 22:08 +0200
                Re: Pickup trucks for city boys c186282 <c186282@nnada.net> - 2025-08-29 10:16 -0400
              Re: Pickup trucks for city boys c186282 <c186282@nnada.net> - 2025-08-29 03:13 -0400
                Re: Pickup trucks for city boys "Carlos E.R." <robin_listas@es.invalid> - 2025-08-29 15:16 +0200
                Re: Pickup trucks for city boys c186282 <c186282@nnada.net> - 2025-08-29 10:46 -0400
                Re: Pickup trucks for city boys The Natural Philosopher <tnp@invalid.invalid> - 2025-08-29 19:14 +0100
                Re: Pickup trucks for city boys "Carlos E.R." <robin_listas@es.invalid> - 2025-08-29 22:15 +0200
                Re: Pickup trucks for city boys The Natural Philosopher <tnp@invalid.invalid> - 2025-08-29 19:04 +0100
            Soldered connections. "Carlos E.R." <robin_listas@es.invalid> - 2025-09-01 11:58 +0200
              Re: Soldered connections. c186282 <c186282@nnada.net> - 2025-09-01 06:30 -0400
                Re: Soldered connections. The Natural Philosopher <tnp@invalid.invalid> - 2025-09-01 12:18 +0100
                Re: Soldered connections. rbowman <bowman@montana.com> - 2025-09-01 19:43 +0000
                Re: Soldered connections. "Carlos E.R." <robin_listas@es.invalid> - 2025-09-01 13:34 +0200
                Re: Soldered connections. The Natural Philosopher <tnp@invalid.invalid> - 2025-09-01 12:43 +0100
                Re: Soldered connections. "Carlos E.R." <robin_listas@es.invalid> - 2025-09-01 14:13 +0200
                Re: Soldered connections. Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2025-09-02 21:22 +0000
                Halogen lamps. [Was: Soldered connections.] "Carlos E.R." <robin_listas@es.invalid> - 2025-09-03 00:36 +0200
                Re: Halogen lamps. [Was: Soldered connections.] Peter Johnson <peter@parksidewood.nospam> - 2025-09-03 15:03 +0100
                Re: Soldered connections. c186282 <c186282@nnada.net> - 2025-09-03 02:03 -0400
                Re: Soldered connections. rbowman <bowman@montana.com> - 2025-09-03 08:19 +0000
                Re: Soldered connections. "Carlos E.R." <robin_listas@es.invalid> - 2025-09-03 13:45 +0200
                Re: Soldered connections. Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2025-09-04 03:28 +0000
                Re: Soldered connections. c186282 <c186282@nnada.net> - 2025-09-01 08:00 -0400
                Re: Soldered connections. "Carlos E.R." <robin_listas@es.invalid> - 2025-09-01 14:16 +0200
                Re: Soldered connections. Lars Poulsen <lars@cleo.beagle-ears.com> - 2025-09-01 19:28 +0000
                Re: Soldered connections. "Carlos E.R." <robin_listas@es.invalid> - 2025-09-01 21:49 +0200
              Re: Soldered connections. The Natural Philosopher <tnp@invalid.invalid> - 2025-09-01 11:38 +0100
                Re: Soldered connections. "Carlos E.R." <robin_listas@es.invalid> - 2025-09-01 13:41 +0200
                Re: Soldered connections. The Natural Philosopher <tnp@invalid.invalid> - 2025-09-01 13:32 +0100
                Re: Soldered connections. Nuno Silva <nunojsilva@invalid.invalid> - 2025-09-02 11:15 +0100
                Storey "Carlos E.R." <robin_listas@es.invalid> - 2025-09-02 12:28 +0200
                Re: Soldered connections. Daniel70 <daniel47@somewhere.someplaceelse> - 2025-09-02 21:59 +1000
                Re: Soldered connections. The Natural Philosopher <tnp@invalid.invalid> - 2025-09-02 14:52 +0100
                Re: Soldered connections. c186282 <c186282@nnada.net> - 2025-09-03 00:45 -0400
                Re: Soldered connections. Daniel70 <daniel47@somewhere.someplaceelse> - 2025-09-03 21:17 +1000
                Re: Soldered connections. The Natural Philosopher <tnp@invalid.invalid> - 2025-09-03 12:31 +0100
                Re: Soldered connections. "Carlos E.R." <robin_listas@es.invalid> - 2025-09-03 13:46 +0200
                Re: Soldered connections. Daniel70 <daniel47@somewhere.someplaceelse> - 2025-09-03 22:03 +1000
                Re: Soldered connections. "Carlos E.R." <robin_listas@es.invalid> - 2025-09-03 14:27 +0200
                Re: Soldered connections. Bobbie Sellers <bliss-sf4ever@dslextreme.com> - 2025-09-03 08:19 -0700
                Re: Soldered connections. c186282 <c186282@nnada.net> - 2025-09-03 07:58 -0400
                Re: Soldered connections. Bobbie Sellers <bliss-sf4ever@dslextreme.com> - 2025-09-03 08:03 -0700
                Re: Soldered connections. Graham J <nobody@nowhere.co.uk> - 2025-09-02 15:24 +0100
                Re: Soldered connections. Nuno Silva <nunojsilva@invalid.invalid> - 2025-09-02 17:30 +0100
                Re: Soldered connections. Don_from_AZ <djatechNOSPAM@comcast.net.invalid> - 2025-09-02 09:39 -0700
                Re: Soldered connections. "Carlos E.R." <robin_listas@es.invalid> - 2025-09-02 20:03 +0200
                Re: Soldered connections. Bobbie Sellers <bliss-sf4ever@dslextreme.com> - 2025-09-02 11:50 -0700
                Re: Soldered connections. Daniel70 <daniel47@somewhere.someplaceelse> - 2025-09-03 21:27 +1000
                Re: Soldered connections. rbowman <bowman@montana.com> - 2025-09-02 19:27 +0000
                Re: Soldered connections. Daniel70 <daniel47@somewhere.someplaceelse> - 2025-09-03 21:28 +1000
                Re: Soldered connections. Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2025-09-02 21:22 +0000
                Re: Soldered connections. Daniel70 <daniel47@somewhere.someplaceelse> - 2025-09-03 21:34 +1000
                Re: Soldered connections. c186282 <c186282@nnada.net> - 2025-09-03 07:49 -0400
                Re: Soldered connections. "Carlos E.R." <robin_listas@es.invalid> - 2025-09-03 14:29 +0200
                Re: Soldered connections. "Carlos E.R." <robin_listas@es.invalid> - 2025-09-03 13:51 +0200
                Re: Soldered connections. "Carlos E.R." <robin_listas@es.invalid> - 2025-09-02 20:01 +0200
                Re: Soldered connections. c186282 <c186282@nnada.net> - 2025-09-03 01:30 -0400
                Re: Soldered connections. Daniel70 <daniel47@somewhere.someplaceelse> - 2025-09-03 21:36 +1000
                Re: Soldered connections. c186282 <c186282@nnada.net> - 2025-09-03 01:07 -0400
                Re: Soldered connections. Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2025-09-04 03:28 +0000
                Re: Soldered connections. "Carlos E.R." <robin_listas@es.invalid> - 2025-09-04 12:00 +0200
                Re: Soldered connections. The Natural Philosopher <tnp@invalid.invalid> - 2025-09-04 11:28 +0100
                Re: Soldered connections. Daniel70 <daniel47@somewhere.someplaceelse> - 2025-09-04 22:36 +1000
                Re: Soldered connections. The Natural Philosopher <tnp@invalid.invalid> - 2025-09-04 13:52 +0100
                Re: Soldered connections. Daniel70 <daniel47@somewhere.someplaceelse> - 2025-09-03 21:20 +1000
                Re: Soldered connections. rbowman <bowman@montana.com> - 2025-09-02 19:24 +0000
                Re: Soldered connections. The Natural Philosopher <tnp@invalid.invalid> - 2025-09-02 20:36 +0100
                Floors [Was: Soldered connections.] "Carlos E.R." <robin_listas@es.invalid> - 2025-09-02 22:03 +0200
                Re: Floors [Was: Soldered connections.] Daniel70 <daniel47@somewhere.someplaceelse> - 2025-09-03 22:12 +1000
                Re: Soldered connections. c186282 <c186282@nnada.net> - 2025-09-03 01:57 -0400
                Re: Soldered connections. The Natural Philosopher <tnp@invalid.invalid> - 2025-09-03 10:14 +0100
                Re: Soldered connections. Daniel70 <daniel47@somewhere.someplaceelse> - 2025-09-03 22:08 +1000
                Re: Soldered connections. Daniel70 <daniel47@somewhere.someplaceelse> - 2025-09-03 22:10 +1000
                Re: Soldered connections. rbowman <bowman@montana.com> - 2025-09-02 19:19 +0000
                Re: Soldered connections. Nuno Silva <nunojsilva@invalid.invalid> - 2025-09-02 22:57 +0100
                Re: Soldered connections. Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2025-09-02 23:55 +0000
              Re: Soldered connections. rbowman <bowman@montana.com> - 2025-09-01 19:39 +0000
        Re: Pickup trucks for city boys Daniel70 <daniel47@somewhere.someplaceelse> - 2025-08-28 23:07 +1000
          Re: Pickup trucks for city boys rbowman <bowman@montana.com> - 2025-08-28 18:31 +0000
            Re: Pickup trucks for city boys Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2025-08-29 06:50 +0000
              Re: Pickup trucks for city boys c186282 <c186282@nnada.net> - 2025-08-29 04:07 -0400
                Re: Pickup trucks for city boys rbowman <bowman@montana.com> - 2025-08-29 18:54 +0000
              Re: Pickup trucks for city boys rbowman <bowman@montana.com> - 2025-08-29 18:47 +0000
            Re: Pickup trucks for city boys Daniel70 <daniel47@somewhere.someplaceelse> - 2025-08-29 20:49 +1000
              Re: Pickup trucks for city boys rbowman <bowman@montana.com> - 2025-08-29 18:28 +0000
                Re: Pickup trucks for city boys "Carlos E.R." <robin_listas@es.invalid> - 2025-08-29 22:26 +0200
                Re: Pickup trucks for city boys rbowman <bowman@montana.com> - 2025-08-30 04:10 +0000
                Re: Pickup trucks for city boys c186282 <c186282@nnada.net> - 2025-08-30 01:09 -0400
                Re: Pickup trucks for city boys "Carlos E.R." <robin_listas@es.invalid> - 2025-08-31 14:29 +0200
                Re: Pickup trucks for city boys rbowman <bowman@montana.com> - 2025-08-31 18:03 +0000
                Re: Pickup trucks for city boys "Carlos E.R." <robin_listas@es.invalid> - 2025-08-31 21:46 +0200
                Re: Pickup trucks for city boys "Carlos E.R." <robin_listas@es.invalid> - 2025-08-31 14:24 +0200
                Re: Pickup trucks for city boys rbowman <bowman@montana.com> - 2025-08-31 18:58 +0000
                Re: Pickup trucks for city boys "Carlos E.R." <robin_listas@es.invalid> - 2025-08-31 21:46 +0200
                Re: Pickup trucks for city boys rbowman <bowman@montana.com> - 2025-09-01 01:02 +0000
                Non glamorous military things "Carlos E.R." <robin_listas@es.invalid> - 2025-09-01 11:38 +0200
              Re: Pickup trucks for city boys Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2025-08-29 23:51 +0000
    Re: Pickup trucks for city boys rbowman <bowman@montana.com> - 2025-08-27 21:25 +0000
  Re: Pickup trucks for city boys rbowman <bowman@montana.com> - 2025-08-27 21:05 +0000

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