Electrical Wiring Best Practices: Can Wires Cross Under Plaster Safely?

Question

Hello Dear Colleagues, I am an amateur in electrical matters, so I hope that someone will help me at this point. Probably for many it will be a trivial question, but I have a dilemma: I am to have the electrical installation replaced in a single-family house. The electrician says that the wires...

czesiu · Answer

A few crosswords in the installation will not change anything, except that more plaster will have to be applied.

Akrzy74 · Answer

Cables can cross each other and this is not a criminal mistake. Sometimes it cannot be otherwise. And how does an electrician count you - from a point, whole, or maybe the amount of wire laid? As a result of the crossing of the wires, there is no need to thicken the plaster on the wall - you should shoe under the wire.

grzeko1 · Answer

Hello.
Nothing will happen if the cables cross, sometimes there is no other way to distribute the installation.
You need to carve a furrow at the intersection so that you do not have to put too much plaster and it will be ok.

It was.

jarek_elektron · Answer

Thank you very much for the answers, you really helped me because I had the impression that my electrician wanted to cut me a little. Thanks.

Anonymous · Answer

The cables can cross, as long as they do not go diagonally along the wall, to save some cable.

fala591 · Answer

Hello.
If the contractor buys the materials, they want you to pay for the commission on purchases. If you are buying materials tailored to its specification, seriously consider changing the contractor (if the work progress allows it).
He's such a professional.

cuma67 · Answer

By the way, I will ask about a few similar topics in order not to duplicate the threads:
1. Is it possible to lay the 230V power supply cables under the window in a single-family house, under which window there will also be a central heating heater and the electric cable will cross the heater's supply / return? (as of 09.2016)
2. Is it possible to lay electric cables on the internal boundary wall with a neighbor in a semi-detached, terraced house, etc.
3. And intersections with other installations, eg LAN, alarm, antenna, water, sewage, gas?
4. I also found on the net that it is not forbidden to cross a three-phase installation with another three-phase one.

CYRUS2 · Answer

Should I carry cables for free and waste man-hours outside the facility? Transport for free - the transport itself costs too. Buddy wave591! It is you who are trying to cut the performer. A stick has two ends. There is no commission, it is not a guarantee for defects caused by material defects. The investor has to pay for diagnostics and repair.

TWK · Answer

Ad 1. It shouldn't be. Thus, the cooling conditions for the conduit deteriorate.
Ad 2. I don't see any contraindications.
Ad 3. Intersections and approaches to gas installations in accordance with the provisions of the ordinance on the conditions to be met by buildings and their location. In the case of the water supply, I would also give a greater distance so that the replacement of pipes does not damage the pipes.
Ad 4. There are no contraindications to crossing five-core cables. But you will probably need appropriate shoring to the wall so that it can be covered with plaster.

mawerix123 · Answer

But the old chop :D It does not matter, the end result is that the cable will most likely be damaged by the radiator installers, if not with a plug, then when grooving for the radiator supply pipes, I avoid such places with a wide arc. Why not. It's hard to run all the installations so that they don't cross each other.

cuma67 · Answer

Next question:
no 5
Can the wires cross in the groove like this? Supply of the storey - attic in the cottage. Additionally, there will be one or two single-phase cables, plus one three-phase one. Of course, all this fits in the groove before the mortar is laid, but it can also be corrected - swap places so that the wires do not cross, for example, by the person who did it.

Łukasz-O · Answer

You have the answer in post # 3.

cuma67 · Answer

Indeed - I forgot to reread the thread from the beginning before writing another post. They can cross, so there are only aesthetic considerations, because in the situation shown in my photo, the wires can be arranged so that they do not cross, and in other cases, to avoid also forging furrows too deep to hide these crossings under the plaster.

Electrical Wiring Best Practices: Can Wires Cross Under Plaster Safely?

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