| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for laying line main power cable by which power cables can be used as power supply cables for construction work during the construction work of a building and as the power cable main lines of the building, after the building has been constructed. SOLUTION: In a method for laying power cable main line for building, a temporary power source 21 is provided on the first floor of a building to be constructed. Wherever the main line laying work becomes possible at every two stories as the construction work progresses, a work for connecting unit-length cable units 33B to the upper ends of cable units 31A and 33A which are wired from the power source 21, a work for connecting connection units 34 to the upper ends of the cable units 33B, and a work for connecting cable units 32B, 33C, and 33D for lower floor to the connection units 34 are conducted. During the construction work of the building, the cables are used as power supply cables for construction work. When a power-receiving equipment and substation 22 are provided on the rooftop of the building after repeating such works, the lower end of the cable unit 31A is cut off from the power source 21, and power cable main line of the building is laid by disconnecting the upper ends of the cable units 33E-33H and 32C from the connection units 34, so that the units 33E-33H and 32C are connected to the substation 22. |
