Basler Electric BE1-700 - Manual (Page 276)

Typical DC and AC Connections
Typical external dc and ac connections for the BE1-700 are shown in Figures 12-5 through 12-7.
NOTE
The relay should be hard-wired to earth ground with no smaller than 12 AWG
copper wire attached to the rear ground terminal of the relay case. When the
relay is configured in a system with other protective devices, a separate ground
bus lead is recommended for each relay.
12-6 BE1-700 Installation 9376700990 Rev M