5-5
Cisco 1120 Connected Grid Router Hardware Installation Guide
OL-26438-02
Chapter 5 Connecting the Router to Power
AC Power Connection Information
Electrical Wire Color Codes
This section provides general information about the standard wire coloring used for AC and DC power
connections. Use these colors as a guide when wiring the terminal block as part of the AC power and DC
power connection procedure.
Caution
You should verify power wire color information for your installation site with a qualified electrician
before making any power connections to the router.
Table 5-1
Power Input Terminals
Item
Terminal Type
Description
1
AC-Input Power Source Terminals
Ground terminal
To provide a protected earth
ground, terminate either a
green/yellow or green wire
(region-specific) from the AC
power cable on the external screw
on the left side of the router.
See
Table 5-2
for details on wiring
colors by region
N
Neutral wire terminal
L3
Line terminal
L2
Line terminal
L1
Line terminal
2
DC-Input Power Source Terminals
–
Negative
+
Positive
Table 5-2
AC Power Electrical Wiring Colors by Region
Region or Country
Standard
Ground
(Protective Earth)
Neutral Line (Phases)
European Union
IEC 60446
Green-and-yellow
Blue
Black, brown, gray
United States
–
Green
White
120/208/240V:
Black, red, blue
277/480V:
Brown, orange, yellow
Canada
–
Green
White
120/208/240V:
Red, black
Single-phase isolated systems:
orange, brown
Three-phase isolated systems:
orange, brown, yellow