Specific steps for troubleshooting rural lighting electrical ready boardss in Africa

1. Safety preparation: Cut off the main switch of the electrical ready board, provide grounding protection, confirm that there is no rain or water accumulation on site, and wear insulated gloves; In rural areas with frequent thunderstorms and outdated power lines, it is strictly prohibited to dismantle machines blindly when they are electrified to prevent secondary accidents such as electric shock and lightning strikes.

2. Visually inspect the appearance of the box for rust, damage, and water ingress; Check whether the insulation layer of the incoming and outgoing lines is aging, peeling, or if the joints are burnt black or loose; Check whether the leakage protector and small circuit breaker have tripped, whether there is a burning smell, and whether the surge protection device (SPD) has penetrated and turned black.

3. End load section by section inspection starts from the end of lighting fixtures, sockets, etc., disconnect the load one by one, connect the power supply for trial operation, determine whether it is a single light fixture damaged, short circuited, or a whole circuit fault, and quickly isolate the faulty load.

4. Check the branch wires for unauthorized connections, moisture, and electrical leakage during the inspection of the circuit and switch; Check for poor contact and tripping failure of small circuit breakers, leakage protectors, and wiring terminals, measure the insulation resistance of the circuit, and identify hidden faults and leakage hazards in the circuit.

5. Check whether the internal neutral and ground wire connections of the components in the box are standardized and firm; Check whether the surge protection device (SPD), circuit breaker, and leakage module are aging and malfunctioning, with a focus on testing whether the grounding resistance meets the standard, and adapt to the thunderstorm prone environment in rural Africa.

6. After closing the circuit and verifying the repair of the fault, organize the wiring and tighten the terminals. First, test the power supply of the branch circuit, and then close the main circuit; Test the normal start and stop of the lighting circuit by circuit, observe for any tripping or heating, confirm that the fault has been completely eliminated, and keep maintenance records.