TRAK Machine Tools
Site Preparation Guide
TRAK VMC12si
F16467-64 | Rev 9/10/2021
Page 6 of 7
Electrical Connections
Main Power to the Machine Connections
The 3 phase 480 volt (432 to 528 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
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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.
