The installation height of the meter box and small power distribution unit usually needs to be determined according to local electrical codes and standards to ensure safety and easy reading. Under normal circumstances, the installation height of the meter box and small power distribution unit is generally between 1.4 meters and 1.7 meters. Here are some possible considerations:

Readability: The installation height should be convenient for power company staff or owners to read meter readings to ensure accurate recording of the meter.

Moisture-proof: The installation height should avoid heavy rain or other situations that may cause water immersion, and ensure that the inside of the meter box and small power distribution unit is not affected by moisture.

Convenience: The installation height should make operations such as maintenance, inspection and replacement of meters more convenient.

Safety: Considering the safety of the meter box and small power distribution unit, avoid installing it in a location susceptible to external damage or destruction to protect the safety of the meter and users.

In actual operation, it is best to consult the local power company or relevant departments to obtain accurate installation height requirements to ensure compliance with local specific codes and standards.