Do you know what is the control standard for building cable laying in electrical engineering? Posted by : admin / Posted on : Mar 18， 2021

When laying through pipes, the total cross-sectional area of insulated wires should not exceed 40% of the cross-sectional area of the pipe; different circuits, different voltage levels, and AC and DC wires should not be passed through the same conduit, and the wires of the same AC circuit should be passed through the same metal In the conduit, the three-phase or single-phase AC cable shall be passed through the steel conduit separately without dividing the phase; the wires shall not have joints and kinks in the pipe, and the joints shall be located in the junction box (box).

In the case of multi-phase power supply, the color of the insulation layer of the wires of the same building and structure should be the same, that is, the protective ground wire (PE wire)-yellow and green color, neutral wire-light blue, A phase-yellow, B phase- Green, C phase-red.

Universal Steel Pile to Anchor Temporarily

Single strands of 10mm2, multiple strands of 2.5mm2 and below can be directly connected to the equipment. The above are connected through wiring terminals, and there are no more than 2 wires in each place; when the actual connection is more than 2, small busbars should be used for tapping.