Checking the condition of the wires inside the electricity meter box is an important step in ensuring the safety of household or workplace electricity usage. Here are some basic inspection methods:

Safety preparation: Firstly, ensure that the power supply of the meter box is turned off, or use insulated tools to operate with caution while live to prevent electric shock accidents.

Appearance inspection: Observe the surface of the wire for any signs of damage, aging, exposure, or burning. These signs may indicate safety hazards in the electrical wiring.

Connection inspection: Check whether the connectors of the wires are secure, whether there is looseness or poor contact. Loose joints may lead to increased resistance, heating, and even fire hazards.

Insulation layer inspection: The insulation layer of the wire should be kept intact and undamaged to prevent the risk of electric shock caused by current leakage. Check for wear, cracking, or aging of the insulation layer.

Color identification: According to standards, the colors of wires should be clearly distinguished, such as red, yellow, green, etc. for phase wires (live wires), blue for neutral wires, and yellow green for ground wires. Check if the color markings on the wires are clear for proper identification and use.

Use professional tools: If possible, use a multimeter or other tools to check the resistance, current, and other parameters of the wire to determine if there are any faults or hidden dangers in the wire.

Regular maintenance: The meter box and its wires should be inspected and maintained regularly to promptly identify and address potential safety issues.

Please note that if any uncertain or suspected hazardous situations are found during the inspection process, the operation should be immediately stopped and professional electrician assistance should be sought.