The distribution box should be equipped with a residual current circuit breaker (RCCB) and a protective earth (PE) busbar. Its residual current operating current should not exceed 30 mA, and it should have overload protection.
Furthermore, several outgoing lines should be reasonably distributed to control lighting, air conditioning sockets, etc., ensuring that each circuit can operate under normal load.
On the busbar, the neutral wire and protective earth wire should be connected correctly, twisted connections are prohibited, and they must be clearly numbered to ensure safety.
