Edit 20200713: The original wiring in this article was wrong, thanks Jules Vape for pointing this out in the comments.
This is the correct wiring according to IEC 60320 – Wikipedia: C13/C14_coupler: File:IEC60320 C13.jpg – Wikipedia 
- Facing the female connector:
- Left: Neutral
- Middle: Protective Earth
- Right: Live
- Facing the male jack:
- Left: Live
- Middle: Protective Earth
- Right: Neutral
The same information from [WayBack] IEC 60320 (IEC 320) Reference Chart – IEC 60320 Connectors & Plugs | StayOnline:
IEC-60320 Plugs and Connectors |
Rating |
Configuration
Female/Male |
International |
North America |
Wires |
Poles |

C13/C14 |
250 Volts
10 Amps |
125/250 Volts
15 Amps |
3 Wires |
2 Poles |
Wiring colours
If you wire it, the colours depend on where you live. I live in the Netherlands so this shortened table does apply:
IEC (most of Europe) AC power circuit wiring color codes.
Function |
label |
Color, IEC |
Color, old IEC |
Protective earth |
PE |
green-yellow |
green-yellow |
Neutral |
N |
blue |
blue |
Line, single phase |
L |
brown |
brown or black |
Longer tables and infographics are here:
–jeroen
Original wrong wiring:
So thanks but no thanks Simon Carter for this wrong info (live and neutral are reversed in his image):

C14 (male; left) and C13 (female; right)
Viewing a socket (line or chassis) from the front, i.e. the side that the plug fits into, the connections are:
Left Pin: Neutral
Centre Pin: Earth
Right Pin: Live
|
Source: Electronics 2000 | Pin-outs | IEC Connectors
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