The document provides specifications for proper earthing, including that the earthing electrode must be at least 1.5 meters from the building, be made of the same material as the earth wire with a cross-sectional area between 0.02 and 0.1 square inches, and be a galvanized iron pipe of at least 12mm diameter and 32cm length buried in a mixture of coal and salt. It also specifies that all earth wires must terminate securely at the main circuit board and ensure low enough resistance for protective relays and fuses to operate.