Signal transmission itself is a state of the level of transmission. Although the load current is not high, the resistance of the conductor on its own can result in consumption of electricity that will also produce heat; causing heat nearby the conductor range thus forming tiny "thermal effects".

Larger currents traveling through the power cord will produce larger amounts of heat. The longer the power runs, the more significant the "thermal effect". Long-term use would also make the insulator age easily causing conductor tissue deformation and affecting the accuracy and integrity of the transmitted current.

BTL deploys military MIL standards for production in which their wires can be utilized for long-term use and still maintain tall straight conductors; not affected by thermal effects.