Electrical house canalisation (conduit system) involves installing protective pipes (conduits) within walls or structures to route and shield electrical wires, ensuring safety, organization, and easy future modifications, using materials like PVC or metal for durability, water resistance, and protection from damage, with specific wire types (e.g., THHN/THWN) pulled through them after the pipes are fixed. It’s a superior method for modern wiring, preventing hazards by containing wires and allowing easy replacement without major construction.