Cisco WS-C1912-A Hardware Installation Guide - Page 70

Connecting to DC Power, DC Wiring Requirements for Cisco 1900 Series Routers

Page 70 highlights

Connecting Power Chapter 4 Installing and Connecting the Router Warning This product relies on the building's installation for short-circuit (over current) protection. Ensure that the protective device is rated not greater than: 15A, 120VAC (10A, 240VAC). Statement 1005 Connecting to DC Power If your router has a DC-input power supply, follow the directions in this section for proper wiring. A router with a DC-input power supply has a terminal block for the DC power connections. • DC Wiring Requirements for Cisco 1900 Series Routers, page 4-22 • Cisco 1900 Series Router Wiring Procedure for DC Input, page 4-23 Caution DC return is isolated from the frame. (NEBS DC-1) Warning This product requires short-circuit (overcurrent) protection, to be provided as part of the building installation. Install only in accordance with national and local wiring regulations. Statement 1045 Warning This product relies on the building's installation for short-circuit (over current) protection. Ensure that the protective device is rated not greater than: 60VDC, 20A. Statement 1005 Warning Only trained and qualified personnel should be allowed to install, replace, or service this equipment. Statement 1030 Warning Use copper conductors only. Statement 1025 DC Wiring Requirements for Cisco 1900 Series Routers A Cisco 1921 router with a DC-input power supply requires copper wire and crimp-type terminals for the power connections. Table 4-2 summarizes the wiring requirements. You can connect a single DC power source to either the A input or the B input. If there are dual power sources, connect one source to the A input and one source to the B input; both sources must be the same polarity and voltage. Table 4-2 DC Wiring Requirements for Cisco 1900 Routers DC Power Input 32-60 VDC, 4A, positive or negative, single source DC Input Wire Size AWG 14 (2.0 mm2) Safety Ground Wire Size Wire Terminal (Lug) AWG 14 (2.0 Amp/Tyco No. 32957 mm2), minimum Overcurrent Protection 20 A maximum 4-22 Cisco 1900 Series Hardware Installation OL-19084-02

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102

4-22
Cisco 1900 Series Hardware Installation
OL-19084-02
Chapter 4
Installing and Connecting the Router
Connecting Power
Warning
This product relies on the building’s installation for short-circuit (over current) protection. Ensure that
the protective device is rated not greater than: 15A, 120VAC (10A, 240VAC).
Statement 1005
Connecting to DC Power
If your router has a DC-input power supply, follow the directions in this section for proper wiring. A
router with a DC-input power supply has a terminal block for the DC power connections.
DC Wiring Requirements for Cisco 1900 Series Routers, page 4-22
Cisco 1900 Series Router Wiring Procedure for DC Input, page 4-23
Caution
DC return is isolated from the frame. (NEBS DC-1)
Warning
This product requires short-circuit (overcurrent) protection, to be provided as part of the building
installation. Install only in accordance with national and local wiring regulations.
Statement 1045
Warning
This product relies on the building’s installation for short-circuit (over current) protection. Ensure that
the protective device is rated not greater than: 60VDC, 20A.
Statement 1005
Warning
Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Statement 1030
Warning
Use copper conductors only.
Statement 1025
DC Wiring Requirements for Cisco 1900 Series Routers
A Cisco 1921 router with a DC-input power supply requires copper wire and crimp-type terminals for
the power connections.
Table 4-2
summarizes the wiring requirements.
You can connect a single DC power source to either the A input or the B input. If there are dual power
sources, connect one source to the A input and one source to the B input; both sources must be the same
polarity and voltage.
Table 4-2
DC Wiring Requirements for Cisco 1900 Routers
DC Power Input
DC Input
Wire Size
Safety Ground
Wire Size
Wire Terminal (Lug)
Overcurrent
Protection
32-60 VDC, 4A,
positive or negative,
single source
AWG 14
(2.0 mm2)
AWG 14 (2.0
mm2),
minimum
Amp/Tyco No. 32957
20 A maximum