Brother HL-3260N - Manual (Page 23)

REGULATIONS
xix
Cut each of the three wires to the appropriate length. If the
construction of the plug permits, leave the green and yellow wire
longer than the others so that, in the event that the cord is pulled out of
the plug, the green and yellow wire will be the last to disconnect.
Remove a short section of the colored insulation to expose the wires.
The wire which is colored green and yellow must be connected to the
terminal in the plug which is marked with the letter “E” or by the safety
earth symbol , or colored green or green and yellow.
The wire which is colored blue must be connected to the terminal
which is marked with the letter “N” or colored black or blue.
The wire which is colored brown must be connected to the terminal
which is marked with the letter “L” or colored red or brown.
The outer sheath of the cord must be secured inside the plug. The
colored wires should not hang out of the plug.