# \#fault-indicator **URL:** https://scanalyst.fourmilab.ch/tag/fault-indicator/3881.md [Latest](https://scanalyst.fourmilab.ch/latest.md) · [Categories](https://scanalyst.fourmilab.ch/categories.md) · [Tags](https://scanalyst.fourmilab.ch/tags.md) --- ## [Power Line Fault Indicators](https://scanalyst.fourmilab.ch/t/power-line-fault-indicators/2818)
**Author:** [@johnwalker](https://scanalyst.fourmilab.ch/u/johnwalker)\ **Replies:** 0\ **Last updated:** [28 February 2023 15:44 UTC](https://scanalyst.fourmilab.ch/t/power-line-fault-indicators/2818 "2023-02-28T15:44:43Z")
When electrical power fails due to a substation tripping after detecting an anomalous load, linemen often had to follow overhead lines from pole to pole, sometimes on foot through difficult terrain, to find…