Wires and cables refer to materials used for power, electrical and related transmission purposes. There is no strict boundary between "wire" and "cable". Generally, products with few cores, small product diameter and simple structure are called wires, those without insulation are called bare wires, and others are called cables. Then, in this way, wires and cables are very easy to heat and overload. When selecting wires and cables, power cable manufacturers should try to choose cables. The full performance of wires and cables must be better, and they can also have a longer service life. How to prevent wires and cables from catching fire due to overload?
1. Take fire and flame retardant measures.
2. Enhance cable operation monitoring to avoid cable overload operation.
3. Carry out cable test regularly, and deal with any problems found immediately.
4. Install a fire alarm device to immediately detect the fire and avoid cable fire.
5. Occasionally clean the dust accumulated on the cable to prevent the self ignition of the accumulated dust from causing the cable to catch fire.
6. The cable trench shall be kept dry to prevent the cable from being affected with moisture, which may cause insulation degradation and short circuit.
7. Ensure the construction quality, especially the production quality of cable head, in strict accordance with the specified requirements.
8. Strengthen the regular calibration and maintenance of cable circuit switch and protection to ensure reliable action.
9. When laying the cable, keep enough distance from the hot pipe, and the control cable shall be ≥ 0.5m; Power cable ≥ 1m.
The control cable and power cable shall be arranged in separate trenches, layers and separately. It is impossible to place them in overlapping layers.
Flame retardant and thermal insulation measures shall be taken for cables that do not conform to the specified position.
10. Fire fighting equipment and facilities provided. The fire of overhead cable can be put out by common fire extinguishers, but automatic or remote control fire extinguishing devices, such as 1301 fire extinguishing device, water spray fire extinguishing device, should be installed at cable interlayer, shaft, channel and tunnel.
