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General Single Line Circuit Diagram For Three Phase Consumer Units (DB) (Insulated or Metalclad Type)

Basic TPN Distribution Board (DB)

TPN Distribution Board Incorporated With Surge Protective Device (SPD) For Protection Against Over Voltage Caused By Indirect Lightning Strike

TPN Distribution Board For Computer Circuits Incorporated With Surge Protective Device (SPD) For Lightning Protection

General Recomendations

  • Usage of 10mA RCCB or RCBO in wet areas gives added protection.
  • Type A RCCB or RCBO for general appliances using inverter technology to ensure safe protection.

Notes

  • All the above Single Line Diagrams are examples intended for reference to a comprehensive design configuration.
  • Final circuitry diagrams designs are subjected to Consultants recomendations. It may vary or extended to include any additional circuitry.
  • Rated currents are not indicated in the drawings. It is subjected to power demands as required in each circuitry.