Triplett Fox 2 – PN: 3382 - Manual (Page 6)

6
10) Use caution when working with telephone lines. They
can support dangerous voltages. 50VDC is often present,
and 100VAC may be present during ringing. Additionally,
telephone lines may support dangerous levels of
common mode voltages. In some circumstances, user
injury may result.
11) Use caution when working with any long unconnected
wire or cable. Under some conditions, unconnected wires
may “float up” to dangerous potentials, and touching
them may result in user injury.
Specifications:
Telephone Line Polarity Test:
Indication: Green or Red LED lights for Normal or
Reversed polarity
Load: Approx. 13mA at 50VDC (usually less than
off-hook recognition current)
Protection: Tolerates momentary 120VAC Line Cross
without damage.
Telephone Line Ringer and Visual Ring Indication:
Indication: Red and Green LEDs light simultaneously,
Beeper sounds
Protection: Tolerates momentary 120VAC Line Cross
without damage.