Should Weather Vanes Be Grounded?
The Primary Reason for “Grounding” a Weathervane Is for Lightning Protection Purposes. .. . the Second Way to Go Is to Consider the Weathervane to Be a...
The primary reason for “grounding” a weathervane is for lightning protection purposes. ... The second way to go is to consider the weathervane to be a lightning rod, and incorporate it as part of a lightning protection system.
Does a weather vane need to be grounded?
If there is a fully bonded system installed on the building, you should add the weathervane to that system. (A fully bonded system is not considered grounding your fuse box.) If there is no bonded system, DO NOT ground your weathervane which will actually attract lightning.
Do roof finials need to be grounded?
A lone piece of metal sitting on your roof is not grounded, so it obviously will not "tend" to attract lightning, and therefore there is no worry. The vast majority of weather vanes, finials, metal roofs, church steeples, barns, etc. are not lightning protected, and it has not mattered whether they were or were not.
Marcus Vance is a cybersecurity auditor and technology writer dedicated to educating the public about online safety, data privacy regulations, enterprise security, and emerging cyber threats.
