What is the long-term allowable ampacity of the cable?
The long-term allowable current carrying capacity of the cable refers to the current value when the cable conductor reaches the long-term allowable working temperature after the specified current is passed thorough the cable.
What are the factors that determine the long-term allowable current carrying capacity of cables?
The long-term allowable working temperature of the cable.
The heat dissipation performance of the cable itself.
The conditions of the cable installation and the heat dissipation conditions of the surrounding environment.
What are the common ways of laying cables?
Buried directly in the ground.
Installed in the cable trench.
Installed in underground tunnels.
Installed on the interior wall or ceiling of the building.
Installed on the cable tray.
Installed in the cable duct.
