Measures to avoid hidden dangers of lighting electrical ready board in rainstorm days: a comprehensive strategy from protection to emergency

In rainstorm, the lighting electrical ready board is prone to short circuit and electric leakage due to rainwater intrusion, aging of lines or poor contact, which seriously threatens personal safety. The following targeted measures are proposed from three aspects: protection, operation, and emergency response:

1、 Strengthen protection: block the path of rainwater intrusion

Box sealing upgrade

Choose a electrical ready board that meets the protection level of IP65 or above, ensure that the joints of the box are sealed with waterproof rubber strips, and install waterproof cover plates at the access points. For example, in a street lamp renovation project in a certain city, the installation of rain barriers and sealing rubber rings reduced the water leakage rate of the electrical ready board by 80%.

Line insulation strengthening

Regularly inspect the insulation layer of the cable and replace any aging or damaged parts in a timely manner. Connect the circuit using waterproof connectors and apply waterproof adhesive for secondary sealing. In a community, the electrical ready board was short circuited after a rainstorm and caused a fire because the line connector was not waterproof.

Optimization of grounding system

Ensure reliable connection between the metal casing of the electrical ready board and the grounding electrode, with a grounding resistance of ≤ 4 Ω. A certain factory has reduced the action time of the leakage protector from 0.3 seconds to 0.1 seconds by adding grounding electrodes, effectively reducing the risk of electric shock.

2、 Standardized operation: reduce the risk of human error

No entry in areas with stagnant water

In rainstorm, it is far away from the ponding area around the electrical ready board. If it is necessary to pass through, it is necessary to use an insulating rod to detect the water depth, and it can only pass after confirming that there is no broken wire. A resident in a certain city died from electric shock caused by stepping voltage while passing through a flooded area of a electrical ready board.

Equipment status monitoring

Install leakage protectors and temperature sensors to monitor current and temperature anomalies in real-time. A certain commercial complex detected potential overheating hazards in the electrical ready board in advance through an intelligent monitoring system, avoiding fire accidents.

3、 Emergency response: rapid response to reduce harm

Short circuit cutting off power supply

When smoke, odor or abnormal noise is found in the electrical ready board, immediately cut off the higher-level power supply and set up warning signs. A certain power company has shortened the emergency response time to within 2 minutes by training employees to master the three-step method of "power outage isolation alarm".

Leakage isolation and rescue

If someone is electrocuted, do not come into direct contact. Instead, use an insulated object (such as a dry wooden stick) to open the wire and call 120 for emergency assistance. A rescue team once successfully rescued an electrocuted person using insulated gloves, avoiding secondary injuries.

4、 Long term maintenance: building a secure closed loop

Regular inspections

Check the sealing, grounding resistance, and insulation of the electrical ready board every month, and increase the frequency of inspections before the rainy season. A property management company reduced equipment failure rate by 60% by establishing inspection records.

technology upgrade

Promote intelligent electrical ready boards that integrate leakage alarm, remote monitoring, and automatic power-off functions. After piloting an intelligent distribution system in a new district, the incidence of leakage accidents has dropped to zero.