1. The minimum ratio of the diameter of the pipe to the diameter of the bundle of wires or cables is 1.3 (the diameter of the pipe should be 30% more).
2. The minimum allowed distance between electric pipes and other utility pipes (water, gas, etc.) is 15 cm.
3. The minimum distance of the built-in pipe from the finished surface of the wall is 1.5 cm.
4. The minimum distance of the built-in pipe from the finished surface of the floor is 3 cm.
5. The minimum distance of the built-in pipe from the finished surface of the bathroom walls is 6 cm.
6. The minimum distance between two underground cables with different voltages is 30 cm.
7. The minimum allowed distance for telephone cables parallel to water, gas and sewer pipes is 30 cm.
8. The minimum distance between the data cable and the power cable is 13 cm.
9. The minimum distance between water taps and pipes and the gas stove to the electrical panel in the kitchen is 1.5 meters.
10. The minimum height of the outlet installed on the wall from the finished floor is 30 cm.
11. The minimum height of the outlet installed in the kitchen from the finished floor is 70 cm.
12. The maximum distance between outlet and outlet on the border of the walls is 3 meters.
13. The maximum distance of the outlet from the edge of the door or window starting from the finished floor is 1.5 meters.
14. The maximum branching length of the wire under the plaster from the fixed wiring location to the consumer location is 1.5 meters.
15. If the cross-section is changed during a circuit, the maximum length of the circuit or branch with a smaller cross-section should be 3 meters.
16. The minimum burial depth of weak pressure cables is 0.7 m, around which 10 cm of soft sand is poured. Therefore, the depth of the groove should be 0.8 meters.
17. The wiring must be single copper wire up to 10 square millimeters, and for higher sections it can be multiple copper wires.
18. The distance of the gas meter from the electric wires installed on the work should be at least 10 cm and from the electric meter at least 50 cm.
19. Gas pipes should not have any contact with internal and external electrical wires and cables.
20. There should be a minimum distance of 5 cm between the surface wire, switch and electric socket with the gas pipes.
21. If the gas pipes are placed in a horizontal or vertical channel with other utility pipes (water, sewage) and electric cable, the gas pipes must be at least 10 cm away from them.
22. Built-in gas pipes, which are covered by construction materials, must be at least 10 cm away from other installation pipes and electric cables. If it is not possible to maintain a distance at the intersection of gas pipes with other utility pipes or electric cables, the gas pipe should be separated from other pipes by means of thermal insulation and from the electric cable by means of PVC sheath or other types.
23. If the gas valve is placed in the vicinity (sides or above) of the switch, outlet or distribution box, it must be 10 cm away from them. If the gas valve is placed under them, a minimum vertical distance of 50 cm from them is required.
This post is written by aak630