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Telephone Power
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Why are there gas cylinders chained to some telephone poles?
Some telephone/power poles have compressed gas cylinders chained to them, as if they will be used at that location, but I can't figure out why an electrician would need compressed gas. Any ideas?
That is zero-moisture nitrogen used to purge sealed cable conduits. Mositure eventually increases crosstalk among otherwise insulated wires.
phone lines used for power
or