Southbend SB1059F owner manual Grounding Requirements, 440V Operation

For Machines Mfg. Since 3/11 P R E P A R A T I O N EVS Toolroom Lathe w/DRO

Grounding Requirements

This machine must be grounded! In the event of certain types of malfunctions or breakdowns, grounding provides a path of least resistance for electric current in order to reduce the risk of electric shock.

Improper connection of the equipment-grounding wire can result in a risk of electric shock. The wire with green insulation (with or without yellow stripes) is the equipment-grounding wire. If repair or replacement of the power cord is necessary, do not connect the equipment- grounding wire to a live (current carrying) terminal.

Check with a qualified electrician or service personnel if you do not understand these grounding requirements, or if you are in doubt about whether the machine is properly grounded. If you ever notice that a cord is damaged or worn, disconnect it from power, and immediately replace it with a new one.

Electrocution or fire may occur if machine is not correctly grounded and attached to the power supply. Use an electrician or qualified service personnel to ensure a safe power connection.

440V Operation

As specified in the Circuit Requirements section on the previous page, these machines must be hardwired to the power source, using a locking switch (see Figure 10).

These machines must also be connected to a grounded metal permanent wiring system; or to a system with an equipment-grounding conductor. Due to the complexity and high voltage involved, this type of installation MUST be done by an electrician or qualified service personnel.

	LOCKING
DISCONNECT SWITCH
Power Source	Machine
Conduit	Conduit
Ground	Ground

Figure 10. Typical hardwire setup with a locking

disconnect switch.

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