| 摘要 |
<p>System design and construction of electrical installations in large buildings. The wiring and wall fittings such as junction boxes, power sockets and switch boxes are all built into the precast walls. The cables are run through flexible tubes buried in the walls and connected to the terminals in the fittings. The manufacture of the modules can occur on site or in factories where standardised systems are involved. During the manufacture, the junction boxes, sockets and switch boxes are placed in the positions designated by the drawings. The flexible tubes are then connected to these fittings and the cables fed through the channels followed by the inspection.</p> |
