Table 2-6. Current Draw At -48 Vdc For Fully Loaded Sts-1 System; Table 2-7. Wire Gauge And Fuse Size Recommendations; Wire Gauge And Fuse Size - ADTRAN MX2820 System Manual

MX2820 System Manual
Table 2-6 provides the current draw for a fully loaded STS-1 system at –48 VDC for a single
19-inch shelf and a single 23-inch shelf deployment.
Table 2-6. Current Draw at –48 VDC for fully loaded STS-1 system
Part Number Description
19-inch shelf
1186003Lx SCU
1186004L1 Clock Module
1186005L1 STS-1 MUX
Total Draw in amps
23-inch shelf
1186003Lx SCU
1186004L1 Clock Module
1186005L1 STS-1 MUX
Total Draw in amps
Note: x indicates the list version.

Wire Gauge and Fuse Size

Table 2-7 provides data for determining the wire gauge and fuse size for a fuse panel and
MX2820 shelf in the same bay. The recommendations apply to wiring from the shelf to a fuse
panel in the same bay.

Table 2-7. Wire Gauge and Fuse Size Recommendations

System Voltage
–48 VDC System
±24 VDC System
2-6
Quantity Current Draw
1
2
7 redundant pairs
1
2
9 redundant pairs
Recommended Wire Gauge
14 AWG
12 AWG
Quantity
times Draw
1 × 68 mA
68 mA
2 × 52 mA
52 mA
7 × 332 mA
332 mA
1 × 68 mA
68 mA
2 × 52 mA
52 mA
9 × 332 mA
332 mA
Recommended Fuse Size
Total Draw
68 mA
104 mA
2.33 A
2.5
68 mA
104 mA
2.99 A
3.16 A
8 amps
16 amps
61186003L1-1D