Why does the telephone pole outside my work have an air tank attached to it?

Question

Not shure if its an air tank it looks like a welding gas tank. It has a line running up the pole like its attached to something.

Answer 1

those are thermal boxes

use for testing telephone lines as needed

Disclosed is a thermal environment enclosure for a semiconductor test system, said enclosure comprising a housing having an exterior surface, an interior chamber and a window therethrough. The housing further comprised of a substantially rectangular top, a pair of substantially rectangular side walls, a front wall, a back wall, a top perimeter edge, and a bottom perimeter edge with an attached sealing gasket. The bottom perimeter edge defines an opening into the interior chamber which is configured for sealed mating with the recessed test area to define a imposed thermal environment test area. The top of the housing comprises a hingeably attached lid with a closing latch, the lid including an attached interior surface sealing gasket defining the interior chamber in combination with other walls when the lid is closed. The housing also includes a flange circumscribing the bottom perimeter edge of the housing, with attachment mounts for removeably attaching the enclosure to the front surface of the semiconductor test system and a seal attached to the flange bottom surface for mating with the front surface of the test system to define a sealed interface between the flange and test system front surface. The enclosure further includes a supply line conduit passing through a side wall into the interior chamber, said conduit including a diffuser outlet located in the interior chamber.

Answer 2

If you believe that, I got a bridge to sell ya. You think that answer was just off the top of his head.?? It could be a 'dry nitrogen' tank, sometimes used to pressurize a group of phone lines in a 'tube' to help keep things dry, after a moisture problem..