Constant Wattage Heating Cable is divided into parallel type and series type, Parallel constant wattage heating cable is connected by multiple heating nodes in parallel across the entire length. It can be shared to use according to actual length, but at least reserve one heating node. Series type is suitable for the case where the circuit length exceeds the upper limit of the parallel constant wattage cable.

Two paralleled stranded copper wire as the bus wires with insulation layer FEP, then wrap the nickel-chromium alloy as the heating wire connect with bus wires at regular intervals, form the parallel resistance. Finally covered with insulation jacket FEP. When the bus wires power on, each parallel resistance begin to heat, thus form a continuous heating cable.