Install the distribution box in a dry, ventilated, and low-risk area, away from heat sources, collision hazards, and corrosive or moisture-prone environments to extend service life . If used outdoors, fit a rain cover to prevent water ingress and rust . Ensure the installation surface is level, with an inclination not exceeding 5 degrees, and maintain a standard height of approximately 1.8 meters for convenient operation . Avoid obstructed areas to allow easy access for maintenance.
Before installation, turn off the main power supply to prevent electrocution or sparks . Use certified explosion-proof cables rated for hazardous areas (EX or ATEX marked) that are resistant to flame, impact, and mechanical damage . Connect the incoming power supply to the terminal block, ensuring live, neutral, and earth wires are correctly attached. Proper grounding is essential to prevent electrical hazards . Maintain orderly wiring inside the box, with terminal screws tightly secured and each circuit labeled for identification .
Select a distribution box with an explosion-proof rating appropriate for the hazardous area (e.g., Zone 1, Zone 2, Zone 21, Zone 22) to prevent catastrophic failure . Only use certified components and avoid unauthorized modifications, as these can invalidate the explosion-proof certification . Ensure the installation meets ATEX, IECEx, or NEC Class I/II Division standards .
Regularly inspect the box for damage, corrosion, or dust accumulation, especially in combustible environments . Clean residual materials inside the box and verify that all connections remain secure . Avoid overloading the system, and ensure all cables and components remain certified and intact . Proper maintenance ensures the box continues to contain sparks and withstand potential internal explosions.
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