Guardian Cables & Conductors [P] Ltd offers Submersible Cables. Guardian Cables & Conductors [P] Ltd is an ISO 9001 certified company. Submersible Cables are flat PVC insulated and PVC sheathed cables that are used with submersible pumps and have conductors of high conductivity cores - one red, one blue, one yellow laid flat, filled and sheathed with PVC compound. The Submersible Cables are used in engineering applications.