The distribution box, as the "control core" of the electric heating cable system, enables zoned temperature control and data recording, providing early warning of freezing and blockage risks, and ensuring stable heating of long-distance pipelines. Electric heat trace, or surface heating, is the application of heat to an external surface that compensates for heat lost due to changes in temperature in ambient surroundings. In cold or freezing conditions, heat tracing systems help stabilize surface temperatures of pipes or vessels via electric. tracing system is much more than just the heating cable. Versatile equipment manufactured by TEP Ex may be used fo power connection, in-line and. Type 1058 For Heat Trace Pipe Mounted Zone 1, Zone 2 & Safe Area Type 1058 For Heat Trace Wall Mounted Zone 1, Zone 2 & Safe Area Type 1058 End Seal, Heat Trace w/ Indicator Lamp Zone 1, Zone 2 & Safe Area Type 1058 End Seal, Heat Trace w/ Indicator Lamp Zone 1, Zone 2 & Safe Area Type 1058 For. This box is used to connect a power supply cable to 3 self-regulating cable. It is designed to snap onto the pipe mounting brackets. There are various air circuit breakers inside and a leakage.