Cable testing (electricity)
Applegate, Charles E. Formerly, Consulting Engineer, Weston, Massachusetts.
Last reviewed:January 2020
- Murray loop test
- Varley loop test
- Open circuit
- Related Primary Literature
- Additional Reading
The testing of electric circuits to determine and locate any of the following circuit conditions: (1) an open circuit, (2) a short circuit with another conductor in the same circuit, (3) a ground, which is a short circuit between a conductor and ground or a shield, (4) leakage (a high-resistance path across a portion of the circuit, to another circuit, or to ground or a shield), and (5) a cross (a short circuit or leakage between conductors of different circuits). Circuit testing for complex systems often requires extensive automatic checkout gear to determine the faults defined above as well as many quantities other than resistance. The following discussion illustrates some of the principles involved. See also: Open circuit; Short circuit
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