26 mm 2 (10 AWG) ground wire must be used, and in all other markets a 6 mm 2 must be used. Discover the principle of electrical protection of the foundations for new buildings or structures For both existing and new buildings, a functional earthing system is a prerequisite to protect people and electrical systems from dangerous electrical voltages in buildings. An earthing system must. Abstract: Discussed in this recommended practice is the system grounding of industrial and commercial power systems. It can also be an aid to all engineers responsible for the. Improper grounding or earthing of “Distributed Control Systems (DCS)” or “Power Electronic Systems (PES)” can result in either mal-operation of the system / controller or failure of electronic control cards or sometimes even the embedded control software getting erased. Each DISTRIBUTION BOX and controller must be grounded. Grounding of the units: Attach a ground wire from one of. TERMINAL AND CASE GROUND. FOR OTHER VOLTAGE TRANSFORMER GROUNDING, (SEE FIG 25 ND FIG 26, THIS DRAWING). REFER TO EDS 058104 FOR ADDITI NAL ROUN ING D CON ON SHUNT CAPACITOR BANKS. FOR PENI POINT OF INTERCONNECTION. This helps to reduce the potential difference that exists between.