Option	Description
-CB	A tinned copper braid for use in dry, non-corrosive, hazardous areas. It is also used to provide a conductive ground path when the cable is installed on electrically non-conductive surfaces. This option is required by the NEC for installations on plastic pipe or without ground fault circuit breakers.
-JT	A tinned copper metal braid with a modified polyolefin overjacket for use when the heater cable is exposed to aqueous solutions of inorganic chemicals (phosphate, dilute acids, chlorides, bases and carbonites). It is also recommended where mechanical abuse is a problem.
-J	A tinned copper metal braid with a fluoropolymer overjacket is available for use when the heater cable is exposed to excessive moisture, organic chemicals, solvents or other highly corrosive fluids. Suitable for use in ordinary and hazardous (classified) locations.