11218156

Paragraph Number

87

Advantageously, in certain embodiments, the graphite 810 is used in place of conventional metallic resistive elements 208 such as copper. In embodiments designed to use as much current available on a single 210 Volt circuit protected by up to a 20 Amp breaker, the graphite 810 may be preferred over conventional metallic resistive elements 208 due to the difference in the value of the temperature coefficient of resistance for these materials. Conventional metallic resistive elements 208 typically have a positive temperature coefficient of resistance, while the graphite 801 has a negative temperature coefficient of resistance. The negative temperature coefficient of resistance of graphite 810 reduces power spikes also referred to as “in rush current” drawn when the resistive elements 208 are initially powered.

Added by DJM 2 2021