Electric cable next to the central heating pipes, about 3 cm apart

Hello

I am laying electrical installation in a newly purchased apartment, old building 1930. Walls made of suprema + boards. In one room, it suits me to lay the electric wires in a conduit, and the central heating pipes go next to it in the same groove and I want to insulate them with red foam and then pour the entire set with assembly foam. I don't know the temperature in the pipes, but something around 50 or 70 degrees, gas heating system. My question is will these pipes with such water not harm these electrical wires? The second question is whether to put wires in conduits in suprem or can you do without?

The minimum distances between cables and pipelines are included in the N-SEP-E-004 standard
Below is the table

Yes, but the standard won't tell me if it will have any effect on the cable. I found information that:

"The cable can operate in the temperature range from -30°C to +70°C with a maximum short-circuit temperature of 160°C."

That is, if I do not exceed water temperatures above 70 ° C and the cables and pipes will still be isolated from each other, so nothing should happen. I understand it right?

Urbas wrote:

I understand it well

You don't understand.
You've been given a standard where distances are specified.
And that is the answer to your question.
The provisions of this standard are not some "whim" of an official.
And you continue yours.
So why did you start this topic?

You can do whatever you want, because standards are optional.

If you think that you will not exceed 70 degrees, which the cable can withstand, now add the temperature coefficient to the cable load capacity. And it turns out that you will have to lay a damn thick cable so that it does not overheat, and each cable heats up under load ... 70 degrees of the environment is zero reserve for heating the cable under load.

Urbas wrote:

My question is will these pipes with such water not harm these electrical wires?

Of course they will, what a question. No sane person would lay a wire like that.

Urbas wrote:

Yes, but the standard won't tell me if it will have any effect on the cable.

But the standard tells you how far from the pipes you have to lay it.

Urbas wrote:

Yes, but the standard won't tell me if it will have any effect on the cable

I'm sorry, how can he not say that? You think someone who was making the rules went to a fortune teller for advice. All regulations and standards are established on the basis of, among other things, accidents that have occurred and are intended to prevent them from happening again. By respecting the rules, you respect those who have suffered harm in the past, and based on this experience, you no longer have to be harmed.
And of course you can do as you please.

Nemonek wrote:

And of course you can do as you please.

I will only add that if the Author knows better anyway, I have a request not to bother people anymore.

Like old babies under the block you wind up. I'm asking because I'm not sure what that means. I find some additional information and try to confront it with someone who knows about it. I ask and new questions arise, that's how it works, right? The subject is difficult because I need a socket there, and to get there from the other side I have to forge twice as many furrows and I have a chimney in the middle of the road. I have to bypass the chimney by going under the floor, which I would have to tear off. That is a lot of work for one socket. As I mentioned before, I have furrows about 15 cm by 15 cm from central heating pipes, the idea is that the pipes will be insulated with central heating, cables in conduits and everything covered with mounting foam. And that's where my questions arise. More than once, cables located on a block, which are affected by high temperatures in the summer, do nothing to them.

Urbas wrote:

Like old babies under the block you wind up. I'm asking because I'm not sure what that means. I find some additional information and try to confront it with someone who knows about it. I ask and new questions arise, that's how it works, right? The subject is difficult because I need a socket there, and to get there from the other side I have to forge twice as many furrows and I have a chimney in the middle of the road. I have to bypass the chimney by going under the floor, which I would have to tear off. That is a lot of work for one socket. As I mentioned before, I have furrows about 15 cm by 15 cm from central heating pipes, the idea is that the pipes will be insulated with central heating, cables in conduits and everything covered with mounting foam. And that's where my questions arise. More than once, cables located on a block, which are exposed to high temperatures in the summer, do nothing to them.

And so, where it is more difficult, the rules are broken, the regulations are stretched like old rubber in underpants, because it is far away, difficult and you have to forge ... And you don't want to do it ...

And so it goes, not only in electrical installations. Anyway, the earth is flat.

You have a problem with reading and comprehension. If I wanted to go the easy way, I wouldn't have made the topic.

Shadowix wrote:

If you think that you will not exceed 70 degrees, which the cable can withstand, now add the temperature coefficient to the cable load capacity. And it turns out that you will have to lay a damn thick cable so that it does not overheat, and each cable heats up under load ... 70 degrees of the environment is zero reserve for heating the cable under load.

The rule of thumb is that you make a thread because you have doubts. And as you described above, these are arguments, and your "retrofood" only clutter the forum, because you do not bring anything specific or substantive. You're trying to be smart, but you have no knowledge and nothing concrete to say. I would ask you to give up on this subject and write about rubber and panties elsewhere.

Moderated By Krzysztof Reszka:

3.1.9. Don't be ironic or mean to the other side of the discussion. Please respect dissent and other opinions on the forum. You receive a warning. The answer was, you can't do as the author wants. We close the topic.

Urbas wrote:

The rule of thumb is that you make a thread because you have doubts.

These doubts have been dispelled, and the topic is still dragging.
Probably just to have someone confirm your sick idea.
And took away from you the responsibility for its consequences.
And colleagues whose answers do not suit you, you define:

Urbas wrote:

Like old babies under the block

You should get a ban for that.

I'm trying to get information about what happens to a cable that exceeds or continues to operate at its operating temperature limit. I will make decisions and the manner of execution on my own, I am not looking for support. But before I make a decision I want to know the pros and cons.

Urbas wrote:

I'm trying to get information about what happens to a cable that exceeds or continues to operate at its operating temperature limit.

Well, its insulation softens to such an extent that the wires can come closer together, and as a consequence, a short circuit, fire, etc.
PVC cables up to 70 degrees C are not the only ones used in electricity, there are also silicone ones, e.g. sihf 3x2.5 up to 180 degrees C, or even polyethylene cable ykxs 3x2.5 up to 90 degrees C.
This will not change the fact that the standard distance from the pipe will not be maintained, so such things are only at home and at your own risk.
In addition, the reduction of the heat generated by the cable itself is influenced by the increase in its cross-section, i.e. the use of 4mm2 instead of 2.5 on the 'sensitive' section.