Mineral insulated cables are used to provide circuit integrity in areas such as alarm circuits, emergency lighting and sprinkler systems. MICC cables have copper conductors, a solid copper sheath and are usually insulated using magnesium oxide. The features of the cable make them more resistant to fires than plastic insulated cables due to the lack of organic material. It is for this reason that the MICC cables are suitable for using in public areas, high fire risk areas such as power stations and oil refineries.