LT and HT Cables come with a Construction code which denotes the various types of materials used in it. This coding is according to Indian standards. With the help of H.T and L.T Cables construction coding we can identify the materials used in it. LT cables have insulation of materials like polyvinyl chloride (PVC) or cross-linked polyethylene (XLPE). They are underground cables used for transmission of power from transformers to distribution Switchgear. LT and HT Cables are very useful and easy to install.