The Cellpack SJK1 is universally suitable to connect Low Voltage (1.2 kV) PVC/Plastic or Rubber (EPR) Insulated Cables with either Copper or Aluminium Conductors. Typical Applications are for the repair or extension of Steel Wired Cable and seeing as they reach IP68 they can be used indoor, outdoor, underground or in water (e.g Submersable Pumps). Complete with 15 Amp Strip Connectors.