Indian Oil Corporation LTD

5 Different Types of Electrical House Wiring Systems Cleat Wiring This wiring comprises of PVC insulated wires or ordinary VIR that are braided and compounded. Casing and Capping Wiring It was quite popular in the past but it is considered obsolete these days due to the popularity of the conduit and sheathed wiring system. The cables used in this electric wiring were PVC, VIR or any other approved insulated cables.