CapCab India Ltd. Supplies Single Core Twin Insulated House Wires. CapCab India Ltd. Is an ISO 9001:2000 accredited company. Single Core Twin Insulated House Wires ensure safe and long lasting wiring of buildings. Single Core Twin Insulated House Wires are available indifferent voltage grade. This Single Core Twin Insulated House Wires is supplied in 90 meter lengths in attractive cartons. It is available in different standard colors like red, yellow, blue and black and other colors are available in request.