This system shall supply all consumers connected to he 24V C service and emergency switchboard.
Suppliers shall be from either (i) battery charger No. 1 and the battery, or (ii) battery charger No. 2 and the battery, or (iii) both battery chargers.
The supply arrangement shall be chosen by means of manually operated changeover switches and supplies for both battery chargers will be taken from the 230 V service section.