Re: Telephone socket: dangerous?
- From: Don Bowey <dbowey@xxxxxxxxxxx>
- Date: Sun, 19 Mar 2006 17:04:31 -0800
On 3/18/06 9:45 PM, in article
Md6Tf.57671$Jd.17095@xxxxxxxxxxxxxxxxxxxxxxxxxx, "DecaturTxCowboy"
<forgetit@xxxxxxxxxx> wrote:
Seeker wrote:
Was I too careless? Was I close to the other side? What would happen if I
touched both electrodes with my finger?
Ever watch an outside plant lineman repair a buried splice in the rain
standing or sitting on damp earth? You'll notice we don't take any
special precautions. At most, the 48 volt line current will tickle, but
the reflex action when you get across the 90 VAC ring current could
cause you to fall off a ladder.
Replace the word current with voltage. For some weird reason, the telco
industry calls voltage "current" and alternating current power as "battery".
A or signal battery = 24 VDC un-filtered (has hum) for relays and buzzers
B or talk battery = 24 VDC filtered (has no hum)for intercom
Ring current = 90 VAC or 105 VAC ringing voltage
Lamp battery = 16 VAC
Foreign battery = any outside power leaking into the circuit, like an AC
line.
Only a complete novice in the telco world (or maybe a lineman) would call
"AC " a battery. I spent a few years in the industry and NOBODY ever said
such a stupid thing.
On a wet day we NEVER worked on a line without rubber gloves.
Don
.
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