How to Prevent Electric Shock in Container Houses

Preventing electric shock in container houses requires comprehensive protection measures, including grounding, insulation, anti-static measures, lightning protection, and standardized electrical usage.

I. Reliable Grounding Electrical equipment in container houses must be reliably grounded to reduce the risk of electric shock. When the insulation of electrical equipment is damaged and the casing becomes live, proper grounding allows the current to flow preferentially through the grounding conductor into the ground, preventing the current from passing through the human body and causing electric shock accidents. According to the layout direction of electrical equipment, a dedicated grounding copper bar can be laid under the anti-static floor, connected end-to-end to form an equipotential grounding network within the container, and led out to the grounding point outside the container. At the same time, ensure that all grounding posts are free from paint, rust, welding beads, etc., and are welded equipotentially with the container body, with all grounding points clearly marked.

II. Proper Insulation Protection Lay high-quality flame-retardant insulation mats with an insulation voltage of not less than 5kV in the corridors of container houses, covering the entire corridor and the gaps between equipment cabinets, and trim them neatly and aesthetically. When installing power lines, install power line isolation equipment and do not place circuit cables directly on the bright surfaces of light steel components.

III. Lay Anti-Static Floors The ground of energy storage system containers can adopt fully steel load-bearing anti-static floors or thick wood-based ceramic anti-static floors, with a system resistance value of 1×10⁶ - 1×10⁹Ω and a surface resistance value of 2.5×10⁴ - 1.0×10⁹Ω. At a temperature of (21±1.5)℃ and a relative humidity of 30%, the static voltage should not exceed 2500V, effectively discharging static charges and preventing static electricity generation.

IV. Configure Lightning Protection Systems Container houses must be equipped with reliable lightning protection systems, which are connected to at least two grounding bars provided by the container user through grounding flat steel or grounding round steel. Strictly calculate whether the container's location is within the coverage of the original lightning protection equipment and whether it meets the requirements for primary lightning protection. If not, a separate lightning protection system must be configured.

V. Standardize Electrical Usage Behavior In the rainy season, when water enters the house, immediately disconnect the main power switch to prevent short circuits and discharge accidents caused by water immersion of the lines. Install leakage switches, keep the metal casings of electrical equipment properly grounded, maintain good insulation of household electrical equipment, and do not touch live lines and equipment casually.