Twin and earth cable, one of the most common types of cable used in domestic wiring is also called just T&E cable. For a range of uses but more often as a lighting cable the twin and earth cable range comprises of a wide selection of lengths and conductor areas. Twin and earth flat sheathed cable for fixed mains electricity use contains 2 insulated current carrying conductors and an earth conductor. Predominantly it is used for fixed wiring in domestic and commercial premises for power and lighting circuits.