Connect the PE wire to the secondary distribution box
The PE conductor must have a cross-section of at least 10 mm 2 or must have a second PE connection with a cross-section at least equal to the mains feeder (cf. Live (L) Wire Connection: In a distribution box setup, the incoming live wire (also known as phase or hot wire, denoted as L or Line) connects to the line terminal of the circuit breaker. Primary distribution systems consist of feeders that deliver power from distribution substations to distribution transformers.
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