Container House Interior Wiring
The interior wiring layout of container houses should adhere to principles of safety, standardization, and rationality, involving key aspects such as cable selection, wiring methods, insulation protection, and grounding.
I. Cable Selection and Identification The power supply system should use outdoor-type cross-linked polyethylene insulated flame-retardant cables, with different colors used to identify functions (such as live wires, neutral wires, and ground wires) to ensure quick identification during maintenance. The cables must have independent insulation and sheath layers, with a long-term operating temperature of no less than 105°C and a rated insulation withstand voltage value one level higher than the actual voltage to accommodate temperature variations and mechanical stresses that container houses may face.
II. Wiring Methods and Paths Wiring should comply with national standards, avoiding crossovers or excessive bending. Strong and weak current lines should be laid separately to reduce electromagnetic interference. Cables can be fixed using cable trays or bridges, avoiding direct exposure to metal surfaces to prevent wear. If an open wiring method is used, fire-resistant and moisture-proof conduits should be selected, ensuring a safe distance from the container structure.
III. Insulation Protection Measures The gaps between channels and equipment cabinets inside the container should be covered with flame-retardant insulation mats with an insulation voltage of no less than 5kV, covering the entire passage area and neatly trimmed to prevent edge curling. All electrical connection points (such as sockets and switches) should use insulating sleeves or protective boxes to prevent electric shock risks.
IV. Grounding and Equipotential Bonding The container body should form a reliable equipotential bond with the grounding copper bar, with all grounding posts prohibited from being painted, rusted, or having welding protrusions to ensure good contact of the grounding cables. Non-functional conductive conductors (such as metal casings) should be connected to the grounding system using copper braided straps to prevent safety hazards caused by potential differences. Grounding points should be clearly marked for regular inspection.
V. Adaptation to Special Scenarios If the container house is used for energy storage or industrial scenarios, reference should be made to the "Electrical Layout Requirements for Container Energy Storage," with the addition of emergency lighting systems (automatically activating after power failure, with a luminous flux of ≥50lm and a duration meeting the GB 17945—2010 standard) and the installation of lightning protection modules to protect key equipment.
