Mineral insulated metal-sheathed cable is a assembly of one or more conductors insulated with a highly compressed refractory mineral insulation and enclosed in a liquidtight and gastight continuous copper sheath. The cable can be cut to length with special fittings applied at the terminations. The advantage of this type of cable is that the cable itself is capable of operating at a much higher temperature. It fulfills the passive fire protection called circuit integrity, which is intended to provide operability of critical electrical circuits during a fire.