Hach NA5600 sc Na+ Mode D'emploi page 20

Terminal Description
1 Protective Earth (PE) Ground
2 Neutral (N)
3 Hot (L1)
Note: As an alternative, connect the ground (green) wire to the chassis ground. Refer to
20 English
Table 7 AC wiring information
Color—North America
Green
White
Black
Color—EU
Green with yellow stripe
Blue
Brown
Figure 7 on page 18.