Installation - Bell System Practices Plant Series Reference

SECTION 502-702-1 00
WIRE OR LEAD
Cord at Conn.
Conn. For Dial
Light Trnsf at
*
Line Switch
D5AK Cord
( ) Current color code
[ ] MD color code
Notes: L
3.

INSTALLATION

Insofar as possible, be guided by the customer's
3.01
wishes in placing apparatus.
following:
eSafety for yourself, customer, and maintenance
personnel.
eAvailability of power outlet for 2012A
transformer.
eLocation of telephone set so ringer volume
is adequate for area.
eGeneral appearance of installation.
Install polarity guard (D-180229 Kit of Parts)
3.02
only when specified by local instructions for
end-to-end signaling.
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Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Jan 30, 2012 23:26:48
SSP S02-702-100 -i01_1970-03 -02.jpg
LINE AND RINGER CONNECTIONS FOR BRIDGED, RING,
AND TIP PARTY SERVICE
COLOR
(R )
(G)
D5AK Mtg.
(Y)
Block (BK)
(W)
Conn. Block
Ringer at (S- R)
Net.
(S)
(BR) [S-BR]
at Net.
(W)[S-W]
(G)
at Net.
Insulated and stored
If (BK) strap is present between network terms.
A; insulate and store.
To silence ringer for all classes of service remove (R) ringer lead from
2.
of network; insulate or store on spare terminal.
Consider the
TABLE A
INDIVIDUAL TIP PARTY
RING
OR NO. IDENT
PARTY
BRIDGED GROUND
G
R R
G G
R
G y y
• * *
*
B * * B B
y
y y
y y y
B B B
F
c c
F F
c
Ll Ll Ll
Select a 105-120 volt ac receptacle that is
3.03
not on a circuit controlled by a switch.
2012A transformer should be used with each
telephone set.
this transformer to the service outlet.
production transformers have folded-blade prongs
for this purpose.
section covering station transformers.
For proper illumination of the dial, the length
3.04
of the wire between the transformer and
the telephone set should not exceed 250 feet of
standard inside wire.
mounting cord because of added resistance.
Portable Installation
Jacks and plugs are available for portable
3.05
installation of these telephone sets.
to Division 461 for selection of appropriate types.
TIP PARTY
IDENT GROUND
1000 2650
OHM OHM
G G
R R
y y
B B *
y
y
y
y
B
B
Ll
Ll
F
B B
c c
and A remove from
H
K
A 2A clamp is available to secure
For multiple installations, see
Do not use a 25-foot
A
Current
Refer