Browse Publications Technical Papers 2020-01-0926

Evaluation of High Resistance Connection in Automotive Application 2020-01-0926

A high resistance / poor connection in an electric circuit has been reported to cause a temperature increase exceeding normal operational range at the connection. Some studies have reported glowing condition at the poor connection. The 2017 edition of NFPA 921 states that the wattage of well-developed heating connections in wiring can be up to 30-40 W with currents of 15-20 A. Heating connections of lower wattage have also been noted at currents as low as about 1 A. The NFPA 921 data appears to be referenced from studies on residential electrical systems. This study is to determine the temperature and power loss in a typical automotive electrical connection with a simulated high resistance under different load conditions


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