How does double insulation works?

Double insulation is a safety feature used in electrical devices to prevent electric shock. It involves two layers of insulating material that protect the user from live electrical components. The first layer, typically made of plastic or rubber, surrounds the electrical parts, while the second layer provides an additional barrier, ensuring that even if one layer fails, the other remains intact. This design eliminates the need for a ground connection, making the devices safer to use in environments where grounding may not be available.