Projects with Heating Cables

Guidelines for designing with KME Mineral Insulated Heating Cables

To determine the correct heating cable:

  • Calculate the required thermal power P0
  • Evaluate cable resistance by formula (1)
  • By the length L of the cable, it’s easy to select (2) the cable specific resistance
  • Choose the heating cable with specific resistance just lower than selected one
  • Calculate thermal stress of cable outer sheath by formula (3)
  • If the sheath temperature exceeds maximum permissible temperature (see chart below), re-calculate specific resistance modifying cable length L (longer), cable diameter (larger) or supply voltage (lower)