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Electrical Installation Under Polystyrene: Secure Terrace & Entrance Lighting Cables

przemek22t 29652 23
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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
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  • #1 17882212
    przemek22t
    Level 12  
    Outside the new house, I have an outgoing electrical installation to illuminate the terrace (3 points) and under the balcony to illuminate the entrance (3 points). The cables are laid just like under the plaster, so they are placed directly on the ground and fastened with clips.
    Insulation will be done soon and I wonder if I should leave the cables as they are, with nothing, fold the conduit or put them in the tubes?
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  • #2 17882244
    Brivido

    Level 34  
    Leave it, take photos with the measuring cup and look at the driller's hands.
  • #3 17882249
    bumble
    Level 40  
    You can leave it as is. However, if you allow the thought to replace them at any time, put them in tubes or conduit and that's okay anyway. Just to be sure, I will ask if it is a double-insulated wire?
  • #4 17882250
    stanislaw1954
    Level 43  
    Since you have an installation routed in plaster, there is no point in installing a pipe or conduit under the polystyrene. You will not replace these wires anyway, if you would like to change anything in the future.
  • #5 17882254
    przemek22t
    Level 12  
    Brivido wrote:
    Leave it, take photos with the measuring cup and look at the driller's hands.


    The photos have been taken a long time ago, I only have concerns that the team from thermal insulation when pegging will remember about it because people will not be there every day throughout the entire insulation stage ...
    The second fear I do not know is right or wrong - fire considerations - can leaving the installation in such a way lead to a fire?

    Added after 1 [minutes]:

    stanislaw1954 wrote:
    Since you have an installation routed in plaster, there is no point in installing a pipe or conduit under the polystyrene. You will not replace these wires anyway, if you would like to change anything in the future.


    As I wrote above, the only concerns are about drilling through the dowel or possibly starting a fire.
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  • #6 17882260
    stanislaw1954
    Level 43  
    przemek22t wrote:
    I only have concerns that the team from insulation when pegging will remember about it because people will not be there every day throughout the entire insulation stage ...
    And what will a plastic tube give you, it cannot be drilled?
  • #7 17882263
    przemek22t
    Level 12  
    bumble wrote:
    To be sure, I will ask if it is a double insulated wire?


    If I understand correctly what you are asking, then YES, each conductor has insulation plus outer insulation of all conductors.

    Added after 2 [minutes]:

    stanislaw1954 wrote:
    And what will a plastic tube give you, it cannot be drilled?


    Nothing is impossible, they are only unprofitable ;)
    But seriously, I'll make it up now that it's more for mental peace than for real protection.
  • #8 17882273
    wacek.wacek
    Level 29  
    If you want to take care of fire protection, splash the plywood with glue, the glue will dissipate heat like plaster into the wall. And there is no help for drills.
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  • #9 17882292
    przemek22t
    Level 12  
    wacek.wacek wrote:
    plywood glue


    What glue?
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  • #10 17882302
    wacek.wacek
    Level 29  
    Dyt splash Styrofoam adhesive, i.e. flat wire in double insulation.
  • #11 17882306
    Akrzy74
    Rest in Peace  
    stanislaw1954 wrote:
    And what will a plastic tube give you, it cannot be drilled?

    So why use tubes and conduits at all?
    przemek22t wrote:
    can leaving the installation in such a way lead to a fire?

    Yes, it can cause a fire.
    wacek.wacek wrote:
    If you want to take care of fire protection, sprinkle it with plywood

    Did your colleague hear about SWZ, wire Idd or fire protection and all related automation? Probably not, because a colleague from the construction industry, so a hero or Adam S? :D
    przemek22t wrote:
    What glue?

    I am also curious what glue is involved in the process of automatic shutdown and protection against electric shock.
  • #12 17882316
    bumble
    Level 40  
    The cable is on the concrete and covered with polystyrene, which I know is non-flammable. Leave as is take photos. Anyway, those who will put polystyrene will see where the cable is.
  • #13 17882343
    stanislaw1954
    Level 43  
    Akrzy74 wrote:
    So why use tubes and conduits at all?
    Years ago, it was one of the ways to make an electrical installation. with the possibility of replacing or adding a wire. Nowadays, some people use tubes or conduits for cable wires, but what's the point? Like a mechanical cover, but it's probably just an illusion. Sure, the tube can also be drilled deep into the wall, but at least it is possible to replace the damaged cable. And replacing the pill is unrealistic.
  • #14 17882351
    Akrzy74
    Rest in Peace  
    Well, my friend knows little. The term flame-retardant, or actually self-extinguishing (i.e. polystyrene) does not directly describe the actual properties of the materials, but is the result of the adopted classification.
    I wonder why the drain wires * are designed in a sheath, despite being covered with polystyrene ...


    Edit. Dischargeable * - lightning protection, vertical air terminals.
  • #15 17882364
    wacek.wacek
    Level 29  
    And is this topic serious at all? 90 percent of homes are now put under polystyrene cables for wall lamps and switches. And when investors start to think too much for professionals, then nonsense comes out. When the team puts polystyrene, it marks where the installation is.

    Added after 1 [minutes]:

    The cable in the tube has a lower load capacity than in concrete
  • #16 17882366
    Akrzy74
    Rest in Peace  
    my friend Stanisław, the Bergman tube was not used only for the possible replacement of a single-insulated wire. Nobody now puts what you colloquially call "pint" in Bergman tubes, unless they want to get rid of very old stocks. The tube and the replacement only when the correct cross-section is used and ... safety paste or dishwashing liquid ... :D

    wacek.wacek wrote:
    cables for switch wall lamps.
    wacek.wacek wrote:
    The cable in the tube has a lower load capacity than in concrete

    So enlighten me about the current flowing in the circuit with the wall lamp and the switch and how much the cable Idd will decrease x the correction factor, taking into account environmental conditions, short-term load capacity, temperature, circuit length and properly selected overload protection x say 1.13 -1.45. Then What should be the protection if we use a meter or two tubes?
    I ask out of curiosity. :)
  • #17 17882521
    stanislaw1954
    Level 43  
    Kol. Akrzy74, it is not only about Bergman tubes, after all, PVC or other plastic tubes were also used, and even a crimp, in which individual wires are placed. DYt or DYp type cables are used more and more, but installations in pipes also had their advantages.
  • #18 17882564
    Łukasz-O
    Admin of electroenergetics  
    stanislaw1954 wrote:
    DYt or DYp type cables are used more and more, but installations in pipes also had their advantages.

    What?
    I think YDYp.
  • #19 17882773
    przemek22t
    Level 12  
    So from what we agreed. Do not put the cables in any covers, but leave them as they are. And what about this glue, does it make sense to take the whole thing or it doesn't matter?
  • #20 17882799
    wacek.wacek
    Level 29  
    If you put 1.5 mm in the wire and external installations usually have lighting, which is now usually LED, don't worry about anything.
  • #21 17883547
    Brivido

    Level 34  
    Generally, the polystyrene should be pulled with all the glue, and not sticking to the cakes.
  • #22 17883551
    bumble
    Level 40  
    Brivido wrote:
    Generally, the polystyrene should be pulled with all the glue, and not sticking to the cakes.

    Have you heard about ventilation in the gap between polystyrene and the wall so that it sweats and does not get wet. I did installations on many construction sites, but they made pancakes everywhere. Conclusion: None of them knew each other.
  • #23 17883567
    przemek22t
    Level 12  
    The polystyrene should stick around the perimeter, plus 2 or 3 cakes in the middle. So that in the event of a fire, the space under the polystyrene does not become a chimney that sucks the fire up.
  • #24 20198328
    radek132
    Level 1  
    I know that the topic is old but massacre when I read this nonsense. One of the larger ones is the mentioned wall ventilation. Why then spend money on polystyrene if we are to let cold air under it, which will cool the wall? We glue the polystyrene around the edges and 2-3 pieces, as someone mentioned.
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Topic summary

The discussion revolves around the installation of electrical cables for terrace and entrance lighting under polystyrene insulation. The main concern is whether to leave the cables exposed, use conduits, or cover them with tubes. Responses indicate that leaving the cables as they are is generally acceptable, especially since they are double-insulated. Concerns about fire hazards and the potential for drilling through the insulation were raised, but many participants noted that polystyrene is non-flammable and that proper installation practices, such as marking cable locations, mitigate risks. The use of adhesive for securing polystyrene was also discussed, with suggestions for ensuring fire safety. Overall, the consensus leans towards leaving the cables exposed while ensuring proper insulation and safety measures are in place.
Summary generated by the language model.
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