What can poor earthing lead to in an electrical installation?

Poor earthing in an electrical installation can significantly increase the risk of electric shock and fire hazards. Earthing, or grounding, is essential because it provides a safe path for fault currents to flow into the earth, thus preventing the buildup of voltages that can cause electric shock to individuals who may come into contact with faulty equipment. In the event of a short circuit or insulation failure, without a proper earthing system, the electrical current could flow through alternative pathways, which may include human bodies, leading to serious injuries or fatalities.

Furthermore, inadequate earthing can also cause electrical devices and systems to malfunction, which could potentially lead to overheating wires and eventually fire hazards. The lack of a reliable ground can result in electrical noise, compromised safety systems, and other issues that could exacerbate fire risks. Safe earthing practices are hence critical for the overall safety and functionality of electrical systems.