Frequently Asked Questions from TANO CABLE

For larger cable penetration holes, such as the cable penetration floor, etc., when using fireproof blocking materials to block, according to the actual situation, first coat four to six layers of fireproof paint on the cable surface, the length is about 1.5m below the hole, and then use fire-resistant The material is processed into a board-supporting fire-proof blocking material with a certain strength to ensure that it is firm after being blocked and is easy to disassemble and assemble when the cable is replaced. The plugging is dense and non-porous to effectively block smoke and fire.

There are insulating glue, insulating tape, insulating tube, insulating gloves, insulating resin, etc.

There are two twisting methods for the conductive cores of power cables: twist-free twisting and twist twisting. The core twisted by the back-twisting method has no internal torsion stress, so it is mostly used for twisted wires that are not tightly compressed to avoid dispersing when the single wire is broken due to internal stress. Twisting without back-twisting is mostly used for compacted cores, because the residual stress generated by self-twisting is elastic deformation, and the compaction is plastic deformation, so the internal stress can disappear after compacting.

Copper core cables with different cross-sections can be connected by open-back weak copper pipes and connected by soldering, or pure copper rods can be connected into copper pipes according to different cross-sectional requirements and connected by crimping.

At five evenly distributed points on the circumference of the sheath, measure the outer diameter of the sheath and its average value. The average outer diameter is the outer diameter of the sheath.

(1) When the cable needs to be laid through a protective pipe, the inner diameter of the pipe should not be less than 1.5 times the outer diameter of the cable, and the inner diameter of the concrete pipe, clay pipe, asbestos, and cement pipe should not be less than 100mm; (2) The bending radius of the cable tube should meet the requirements of the bending radius of the cable inserted; (3) Each pipe should not exceed three elbows at most, and there should be no more than two right-angle bends.