new wrote:
While wiring in a new phone jack I got zapped. I measured 55vots accross
b&y zand R&G pairs.

I eventually went to outside telephone interface and plugged into test jack
and found it coming from phone company.

There is no way this is normal is it?

As others have said, voltage sounds about right. But you shouldn't
feel it under normal circumstances. You will get quite the jolt
sometimes if the phone rings while you are playing witht he wires.

You have voltage on both sets of wires. Do you have 2 lines coming in
to the house?