A Client of mine, a nation wide T.V. Cable Company brought me out to a site to check for voltage on the interior RG-6 Coax Cable.
(2)Two apartment complexes have the similar problem out of (10) complexes.
Each complex has a (12) twelve combo meter panel. The sub feeds to each apartment are in romex or service entrance cable, that run down a rafter bay.
We think the RG-6 shares the same rafter bay.
I am reading any where from 18volts to 45 volts to ground with a simpson 260 sieries 8P meter on the shields & cores of the RG-6 when isolated from the incoming service.
The shields are bonded to the main service U-Fer ground during nomal operations.
Apparently it is effecting the High Speed Internet modems. The complex is about 15 years old and the problem had only been revealed with the increased customer High Speed Connections.
Any sugestions appreciated.
Bartlett Electric Inc.