Comprehensive inspection and maintenance of lighting electrical ready boards before the rainy season arrives

Before the rainy season, a systematic inspection and maintenance of the lighting electrical ready board box should be carried out, with a focus on sealing reinforcement, drainage dredging, and lightning protection testing to prevent faults such as rainwater infiltration, short circuit leakage, and lightning damage.

Firstly, reinforce and seal the box body, check whether the sealing strip of the box door is aging, cracking, deformed, or detached, and replace it in a timely manner if it is damaged; Tighten the fixing screws of the box body, door frame hinges, and inlet and outlet pipe openings, seal the gaps where cables pass through walls and damaged holes in the box body, and use waterproof glue to seal the interfaces to prevent rainwater and moisture from entering the box.

Next, clean and clear the drainage holes, check the reserved drainage holes at the bottom and sides of the box one by one, remove blockages such as mud, fallen leaves, spider webs, etc., to ensure that the drainage holes are unobstructed and free of sedimentation; At the same time, clean the dust and condensation stains inside the box, keep the inside of the box dry and ventilated, and avoid water accumulation that can breed corrosion of components.

Finally, conduct a comprehensive inspection of surge protection device (SPD)s, check whether the appearance of the lightning protection SPD surge protector is eroded, whether the indicator light is normal, and replace it in a timely manner if it has aged or failed; Check whether the grounding circuit connection is firm, whether the grounding resistance meets the standard, tighten the grounding terminal, and check whether the insulation layer of the circuit is damaged or aged; At the same time, check whether the circuit breaker and leakage protector are sensitive in action, whether the wiring terminals are loose and heating up, promptly tighten the pressure wires, replace aging accessories, and ensure the safe and stable operation of lighting distribution during the rainy season.