[Blueflag]

OK, ~64- 100+ volts depending on switch manufacturer and set up. Also DC experienced V drop over distance, splices, etc

IIRC, 40 volts was the minimum. IIRC. That was a while ago. RBOC career slot. Southern Bell.

Two 48V in series, tip and ring. Again IIRC.

Thanks for the clarity.

[null and void]

My Explorer post was sponsored by Pacific Bell.

It also had the distinction of being the first coed post in the BSA.

I learned a lot...