The protection of the electric meter box during operation mainly depends on its multiple internal protection mechanisms and external physical protection measures. The following are the main ways to protect the meter box:

Internal protection mechanism:

Overload protection: When the connected current exceeds the rated current, the overload protection device (such as fuse or air switch) in the meter box will automatically cut off the power supply to prevent equipment overload damage or fire.

Leakage protection: The leakage protector monitors the leakage situation in the circuit. Once the current leakage reaches the set value, it will quickly cut off the power supply to protect personnel and equipment safety.

Short circuit protection: The short circuit protection mechanism uses devices such as fuses or air switches to quickly cut off power in the event of a short circuit in the circuit, avoiding serious consequences such as fire.

External protective measures:

Physical Protection: Meter boxes are typically equipped with sturdy enclosures and locks to prevent unauthorized opening and damage. The casing can also resist the erosion of the meter box caused by harsh weather and environmental factors.

Ventilation and drying: The electric meter box should be installed in a ventilated and dry location to avoid moisture and water accumulation, in order to extend the service life of the equipment and prevent electrical failures.

Regular inspection and maintenance: Regularly inspecting and maintaining the meter box, such as cleaning dust, checking for loose wiring, etc., can promptly detect and eliminate potential safety hazards.

In summary, the electric meter box ensures its safety and reliability during operation through multiple internal protection mechanisms and external physical protection measures.