What is the effective distance of the network cable?

In fact, the effective distance of the network cable is not fixed, because the quality of the network cable is different. Netizens "invalid user name" said: with the national standard 8-core copper, I pull 130 meters have no problem. It's not a good idea to watch a movie. Netizen Subote said: I have pulled more than 80 meters, or the kind of 85 yuan/box. One person said that it helped customers to hold the network cable, the length of more than 120 meters is also super normal use, and netizens said that they pulled 90 meters, three people use as usual, no impact on the network speed. At present, the domestic network cable has all copper foot diameter, all copper fine diameter, four copper four iron, all aluminum, etc., if the long-distance wiring, it is best to use all copper foot diameter, otherwise, after a period of time, the network will be unstable. In addition, the use of the network cable environment will also affect the effective transmission distance, accessories have strong electromagnetic interference