Les Niles <[email protected]> writes: > What about using a fiberglass pole instead? The wires to the > instruments could still potentially attract lightning, but probably > wouldn’t carry enough current to start a fire — might blow out the
This is incorrect thinking about lightning. Lightning is basically a current source and that results in huge voltages and melted wires. > weather station electronics, but not burn down the house. Max-gain > Systems <https://mgs4u.com/> sells fiberglass rods and tubes in > various lengths and diameters. If you are in the US, see the National Electrical Code about requirements for antennas. Yes, I know a weather station is not an antenna, but a thing on a mast with a wire seems functionally equivalent. Memory from last I looked is that the mast has to be grounded, perhaps to a driven ground rod outside, and that ground has to be bonded to the service entrance ground. And a lightning protector is required on the wires entering the house (and the protector also needs to be grounded). If you aren't in the US, you should consult your local codes of course, but the physics aren't any different. Some references: https://www.arrl.org/grounding-and-bonding-for-the-amateur http://www.k9yc.com/GroundingAndAudio.pdf https://www.kf7p.com/KF7P/Tech_Resources.html -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-user/rmi1r15qiox.fsf%40s1.lexort.com.
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