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TM 11-5895-878-14&P
power sources, A, C, & D. The critical PTC load is 154
d. Red QA Interbay Trunking System.  The red
KVA and the noncritical load is 249 KVA. Source A is
Quality Assurance system is made up of a TRIAX
the main source of power feeding the PTC.  It is
TRUNK panel in bay 2 of the QA test center. There are
commercial power generated at the local power
six TRIAX cables connected from dual banana jacks on
company. Source C consists of two 250 KW diesel and
the QA panel to six TWINAN jacks in bay 2.18 (fig. 1-
two 936 KVA rated gas turbine generators. Source D is
13).  These connections are to the first six bottom
an UPS power source capable of delivering 156 KVA of
connectors on the red QA TNT panel. Above each jack
power to the critical load.  The batteries in the UPS
is an in-use lamp. Lamps are also located on the TRIAX
system consist of 163 lead calcium batteries, that are
TRUNK panel (fig. 1-15). The lamps are powered by a
good for 15 minutes of operation when other power
48 vdc power supply in the bottom of bay 3. The red
systems fail.  Red and black P&T power distribution
QA panel (fig. 1-13) has two vf tie trunks to the first two
from their associated distribution boxes (fig. FO-1) is
lamp jacks in the MISC in bay 2.20 (fig. 1-14) for vf
given in b and c below.
patching.
Trunks are also provided to each odd
numbered digital bay in row two for patching red digital
b. Red AC Power Distribution. All AC power to the
circuits to the QA test center.
red side of the P&T is connected with 14 AWG wire,
except the two 24 vdc and the two 48 vdc power
supplies. Single phase, 120 volts, 50 Hz AC power is
2-18. AC Power System
connected with three wires to all outlets and equipment
a. General. The PTC operates on 208/120 VAC, 3
as listed below.
phase, 60 Hz power. There are four 50,000 circular mil
feeders feeding the PTC from one of three available
Ckt No.
Amperes
Phase
Equipment
1
15
X
Convenience outlets, bays 2.1, 2.3, 2.5 and 2.7.
2
15
Y
Convenience outlets, bays 2.2, 2.4, 2.6, and 2.8.
3
15
Z
Convenience outlets, bays 2.9, 2.11, 2.13 and 2.15.
4
15
X
Convenience outlets, bays 2.10, 2.12, 2.14 and 2.16.
5
15
Y
Convenience outlets, bays 2.17 and 2.19.
6
15
Z
Convenience outlets, bays 2.18 and 2.20.
7
15
X
Plug strip digital test bay 2.2.
8
15
Y
Plug strip digital test bay 2.7.
9
15
Z
Plug strip digital test bay 2.12.
10
15
X
6V power supply, plug strip, bay 2.17.
11
30
Y
48V power supply No. 1, bay 2.17.
12
30
Z
48V power supply No. 2, bay 2.17.
13
15
X
24V power supply No. 1, bay 2.17.
14
15
Y
24V power supply No. 2, bay 2.17.
15
15
Z
Plug strip VF test, bay 2.20.
16
15
X
Plug strip video monitor, bay 2.18.
17
15
Y
Plug strip, bay 2.1, 2.3, 2.5 and 2.9.
18
15
Z
Plug strip, bay 2.4, 2.6 and 2.8.
19
15
X
Plug strip, bay 2.11, 2.13, 2.15 and 2.19.
20
15
Y
Plug strip, bay 2.10, 2.14 and 2.16.
21
15
Z
Duplex receiver,. rack No. 64 and 69.
22
15
X
Wall video circuit.
23
15
Y
Philco test set.
24
15
Z
Left PTC lights.
25
30
X
Philco Receiver.
26
15
Y
Right PTC lights.
27
30
Z
Philco transmitter.
28
15
Spare.
29
20
Y
26C Modem, rack No. 62.
30-40
Spare.
supplies. Single phase, 120 volts, 60 Hz AC power is
c. Black AC Power Distribution. All AC power to
connected with three wires to all outlets and equipment
the black side of the P&T is connected with 14 AWG
listed below.
wire, except the two 24 vdc and the two 48 vdc power
Ckt No.
Amperes
Phase
Equipment
1
15
X
Convenience outlets, bays 1.3, 1.7 and 1.9.
2
15
Y
Convenience outlets, bays 1.2, 1.4, 1.6 and 1.8.
3
15
Z
Convenience outlets, bays 1.11, 1.13, 1.15, 1.17 and 1.19.
4
15
X
Convenience outlets, bays 1.12, 1.14, 1.16, 1.18 and 1.20.
5
15
Spare.
2-57

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