ADS 3120 Plus Operation Manual page 6

If a 13-amp (BS1363) plug or other type of plug is used, a 5-amp fuse must be fitted either
in the plug or at the distribution board.
IEC Mains Inlet Socket
For mains connection other than in the UK, refer to your local requirements for connection
to the mains supply.
Green/Yellow Earth
Blue Neutral
Fuse Holder
Page 6 of 16
13A Mains Plug Wiring (UK)
Brown Live
Fuse (max 5A)