Heating Cable

A self-regulating electrical heating cable comprising:

• a first power supply conductor extending along the length of the cable;
• a second power supply conductor extending along the length of the cable;
• a third power supply conductor extending along the length of the cable;
• one or more of the first, second and third power supply conductors being encased in material having a positive temperature coefficient of resistance, the first and second power supply conductors being in electrical connection with each other via a first electrically conductive heating element body having a negative temperature coefficient of resistance, and the second and third power supply conductors being in electrical connection with each other via a second electrically conductive heating element body having a negative temperature coefficient of resistance, and wherein, in use,
• the first, second and third power supply conductors are not physically connected to one another.

A self-regulating electrical heating cable comprising:

• a first power supply conductor extending along the length of the cable;
• a second power supply conductor extending along the length of the cable;
• a third power supply conductor extending along the length of the cable;
• one or more of the first, second and third power supply conductors being encased in material having a positive temperature coefficient of resistance, the first and second power supply conductors being in electrical connection with each other via a first electrically conductive heating element body having a negative temperature coefficient of resistance, and the second and third power supply conductors being in electrical connection with each other via a second electrically conductive heating element body having a negative temperature coefficient of resistance, and wherein, in use,
• the first, second and third power supply conductors are physically connected to one another.