laguna Plasma Level 2 CNC Owner's Manual page 56

19.) Grounding Connections (Cont'd.)-
Note: Keep ground wires as short as possible. Remove any paint, rust, or oxide from the
connection point. Always use star washers and electrical anti corrosion paste on all connections.
Connect a minimum 1/0 AWG cable (4/0 is best) from the star to the earth ground rod. Do not
connect any other grounds directly to the ground rod.
• Create an auxiliary star ground point as needed to connect ground leads from moving points
of the table to the main ground. The point should have good metal to metal contact.
• Connect this star to the main star using #4 AWG minimum.
• Connect the power supply safety ground directly to the main star ground with a minimum
1/0 cable.
• Connect the remote arc starter directly to the main star ground with a minimum 1/0 cable.
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