How to Thread Wires in Container Houses

Threading wires in container houses requires a combination of pre-embedded conduits, threading tools, and standardized operations to ensure the safety and aesthetics of the wiring.

I. Preliminary Planning and Material Preparation

1. Determine Wiring Requirements
   Based on the functional division of the container house (such as residential, office, or energy storage), clarify the types of circuits to be installed, including strong current (lighting, sockets, air conditioners, etc.) and weak current (network cables, telephone lines, TV cables, etc.). For example, if used for an energy storage system, it is necessary to select high-temperature-resistant and flame-retardant outdoor cross-linked polyethylene insulated cables according to the 'Electrical Layout Requirements for Container Energy Storage' and distinguish between circuits of different voltage levels.

2. Pre-embedded Conduit Design

   • During the container modification stage, plan the conduit routing in advance, prioritizing the pre-embedding of PVC or steel pipes to avoid structural damage from later slotting.
   • Strong current and weak current conduits should maintain a minimum distance of 30 cm to prevent signal interference; use a pipe bender at corners to ensure smoothness inside the pipe.
   • Reserve outlet and bottom box positions, such as switches, sockets, and network panels, ensuring the bottom boxes are firmly connected to the conduits.

II. Threading Tools and Operating Specifications

1. Use Professional Threading Tools

   • The traditional steel wire traction method is prone to wire jamming and has low efficiency. It is recommended to use a steel wire-coated threading tool, which has high hardness and a pulley design to reduce friction, making it particularly suitable for long-distance or multi-corner circuits.
   • Operating steps: Pass the threading tool's lead through the conduit, fix the wire, and then slowly pull it, avoiding excessive force that could scratch the cable's outer sheath.

2. Special Scenario Handling

   • Long-distance or cornered circuits: Sprinkle talcum powder inside the conduit to reduce friction between the wire and the conduit wall; strip 1-2 cm of the insulation layer at the front end of the wire for easy fixation on the threading tool.
   • Multi-strand wire connections: The wire ends must be crimped firmly to avoid poor contact; leave a 15 cm margin when connecting the wire to the bottom box for easy future maintenance.

III. Safety and Acceptance Points

1. Circuit Differentiation and Protection

   • Wires of different voltages or circuits are strictly prohibited from being threaded into the same conduit (except for lighting circuits, provided there is no interference).
   • Outdoor circuits must use waterproof connectors, and the seams of the container should be properly sealed to prevent moisture intrusion.

2. Power-on Testing and Repair

   • After threading is complete, use a multimeter to test the circuit's continuity, ensuring there are no short circuits or open circuits.
   • After the concealed work is accepted as qualified, fill the slots with cement or sealant to ensure a flat surface.

Notes: If additional wiring is required after the container has been put into use, it is recommended to use surface-mounted wire trays or local hole-cutting modifications to avoid damaging the original structure; for special scenarios such as energy storage systems, strictly follow electrical safety regulations and consult a professional engineer if necessary.