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141 Rodeo Drive TII 126 & 127 Series
Edgewood, NY 11717 Station Protector Modules
Customer Service/Sales 888-844-4720 Rev D 12/07
INSTALLATION NOTE
TII 127M
Tip
Conductor
Ring
Conductor
Line 1
Protector
Line 2
Protector
Ground
Stud
Typical Installation
Station Protector Housing
(Cover Removed)
Telco Side Cable
Terminate Between
Washers
Figure 2
Ground Clip
Customer Side
Cable
Terminate Between
washers
TII 127H
1. GENERAL
The TII 126 and 127 Series Station Protectors
modules may be installed in a wide variety of station
protector and network interface housings. They may
also be used as indoor station protectors when
attached to a TII B1 Mounting Adapter.
The modules are self clearing and generally require no
maintenance. Because the wiring terminals are an
integral part of the protector module, the entire selfcontained unit must be removed and replaced when it
reaches its “end of life” condition
It is possible that successive operations or the
cumulative effect of heat may cause failure of the gas
tube. In case of trouble, the entire protector module
should be replaced with a new module.
National Electric Code Requirement. The protector
shall be installed per National Electric Code
ANSI/NFPA 70, Article 800, Section C, and shall meet
all applicable local safety codes.
These modules shall be installed in NID
enclosures evaluated to the requirement of UL497.
2. INSTALLATION – Station Protector or NID
Loosen the nut on the appropriate ground stud.
Slide the surge protector ground clip of under the nut
and washer. Tighten down the nut (Figure 1).
Ground the module using a No. 6 AWG solid copper
insulated ground wire. Connect one end of the ground
conductor to the appropriate ground stud and the other
end to an appropriate ground source (Figure 1).
Terminate the Telco Side cable (i.e., aerial or buried
drop) in between the bottom set of washers and
bottom nut of the appropriate stud (one conductor to
Tip and one to Ring). Tighten down the nut (Figure 2).
Terminate the Customer Side cable under the top set
of washers and the top nut of the appropriate stud
(one conductor to Tip and one to Ring). Tighten down
the nut (Figure 2).
Loop back unused station wire conductors and coil
around the station wire jacket or store in such a
manner as to prevent them from coming in contact
with protector terminals or bare wires.
When more than one cable is placed under a nut, use
washers between the wires.
Use caution when terminating small gauge Customer
Side cable on the protector module terminals, as the
wires may catch in the threads of the terminal and be
cut or broken when nuts are tightened.
Check all nuts to make sure they are tight.
3. PRECAUTIONS
When clearing trouble on a line that contains gas tube
protector modules, and when the test board has
indicated that there may still be a power contact,
inspect the non-cable portion of the line from the
ground for any power contacts or evidence of damage
from power contacts.
Special care should be taken in making the
inspections where the line runs through trees or where
visibility is limited.
If a power contact is found, notify the proper authority
so it may be corrected.
Do not work on the line until the power contact has
been cleared.
If no contact is found but the test board still have
indications of a power contact, wear insulating gloves
while working with the test board to clear the line.
TII P/N 92203501
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