Junction Boxes in Prefabricated Assembled Houses

Junction boxes in prefabricated assembled houses are mainly divided into two types: those in factory-prefabricated modular buildings and those in the reserved and embedded electrical conduits of prefabricated buildings. Here is a detailed introduction:

Junction boxes in factory-prefabricated modular buildings: These junction boxes include waterproof junction boxes and terminal blocks. They are typically installed beneath factory-prefabricated modular buildings and are waterproof junction boxes with built-in terminal blocks. These waterproof junction boxes are connected to the internal distribution box via power cables and are primarily used for connecting the main incoming power supply from outside the modular building. Terminal blocks offer numerous advantages. Their wire connections are safe and reliable, effectively preventing electrical failures caused by loose connections and ensuring electrical safety. They are easy to install and operate, allowing for quick installation according to standard procedures during factory prefabrication, thereby improving production efficiency. They are also easy to inspect and maintain; when electrical issues arise, inspectors can conveniently check and repair the terminal blocks, reducing maintenance time and costs. They are particularly suitable for connecting high-power and high-current circuits, capable of withstanding significant currents and power to meet the electrical demands of large electrical equipment in modular buildings.

Junction boxes in the reserved and embedded electrical conduits of prefabricated buildings: In prefabricated shear wall residences, the reserved and embedded electrical conduits are crucial. Designers need to accurately locate equipment conduits during the design phase and generate BIM models together with civil engineering components to provide to prefabricated component factories. For sockets, switches, weak current equipment, fire protection equipment, etc., installed on prefabricated walls, junction boxes need to be reserved in advance during the design phase, and it is advisable to use standard 86-type junction boxes. These standard-sized junction boxes facilitate the installation and replacement of equipment and are compatible with most equipment accessories on the market. For lighting fixtures, fire detectors, and other equipment within composite floor slabs, deep junction boxes need to be reserved to connect with the conduits in the cast-in-place layer of the composite floor slabs, ensuring the integrity and continuity of the electrical circuits and enabling the equipment to function properly.