TRAK Machine Tools
Site Preparation Guide
TRAK VMC7si
F16467-62 | Rev 8/3/2021
Page 6 of 7
Electrical Connections
Main Power to the Machine Connections
The 3 phase 480 volt (432 to 528 V is acceptable) or 208 volt (200
–
240 V is acceptable) is connected to L1, L2 and
L3 at the main power switch inside the electrical box. Connect the ground wire as shown in the figure 10.
Figure 9
–
Connect the Ground Wire
Machine Grounding
It is strongly recommended that the machine be earth grounded. A dedicated copper rod 8 feet or so in length
should be driven into the ground near the VMCsi. A ground wire should then be run from the location shown in
figure 9. The copper wire should exit the electrical cabinet in the mid left hand side as shown in figure 10. Make sure
the foam where the copper wire goes through seals the cabinet from external debris. The wire should be 6 gage in
size.
