On 11-02-08 05:37 PM, m II wrote:


"Jim Thompson" wrote in message
...

On Tue, 08 Feb 2011 18:26:04 -0600, flipper wrote:

On Tue, 08 Feb 2011 12:43:25 -0700, Jim Thompson
wrote:

Two lines coming in...

How much risk is it to assume that both "Tips" are essentially earth
ground potential?

...Jim Thompson

Probably about that same as assuming chandeliers, wall outlets, and
thermostats are wired properly.

Get a meter and check it.

I wasn't clear...

What I'm driving at, can I run a ringer from Ring to Earth ground?

(I don't have enough pairs :-)

...Jim Thompson


No!

The lines are supposed to be floating equally above ground for full
differential pair noise reduction.

You may get line voltage spikes from either line to ground on lightning
induced faults etc.



mike


Nice going, you mental deficient. Drug your children yet again?