High resistance connection

A high resistance connection is a type of electrical fault where the electrical resistance of a wire or electrical contact is higher than the circuit was designed for. High resistance connections can be caused by damage to a connection from corrosion or mechanical stress, or from cables not being connected properly.

A high resistance connection makes anything after it in a series circuit have less voltage. In power electronics, a high resistance connection can have a high electric current, making it lose a lot of energy as heat. This can cause electrical fires.

References

  1. ↑ Hu, Rongguang; Wang, Jiabin; Mills, Andrew R.; Chong, Ellis; Sun, Zhigang (2020). "Detection and Classification of Turn Fault and High Resistance Connection Fault in Permanent Magnet Machines Based on Zero Sequence Voltage". IEEE Transactions on Power Electronics. 35 (2): 1922–1933. Bibcode:2020ITPE...35.1922H. doi:10.1109/TPEL.2019.2922114.
  2. ↑ Tom Kelly (2025-09-10). "Hidden Heat: The Unseen Hazard of a High Resistance Connection". Warren Forensics. Retrieved 2026-04-09.