I was thinking of bonding at the other end, that was one of my next steps, but I don't think it would make much difference in this case. It is in an office and the only bond point I have is wall recepticles.
I metered each wire at 17 ohms per by linking them all at one end and getting 34 across each pair. There are actually 2 used out of 4, but it doesn't help if I double up to parallel runs, or go single. I wan't to put the megger to them at 500v, the lowest setting on ours. (What the heck is the 200 ohm setting for, anyway?) My boss doesn't like that idea.
It's a Belden comm cable and I think it should handle it.
The run is tie-wrapped 'outside' existing pipe on a 30 foot ceiling. As far as I can tell from the floor (I should buy some new binoculars), it is one continuous run. We have a manlift, but if I go that route I will pull new, heavier, cable; plus other spares. It is a diagonal route across a good piece of the plant and wire is cheap where I work.
I am not sure what you mean by a handheld calibrator. If we don't have one, we can buy it.
The interface can be hooked up to read in mV or mA, but its 'jumpers' are set to recieve 3 volts max. (that's one chapter I glanced at in the manual). Some of the other inputs are set to mV. Would the input type (V or A) make a difference? I assume I would have to wire a mV configuration to parallel, the same as a voltmeter.
[This message has been edited by Pinemarten (edited 08-25-2003).]
