Southbend SB1053F Turn-X owner manual Grounding Requirements, 220V Operation, 440V Operation

For Machines Mfg. Since 3/11 P R E P A R A T I O N 16-Speed Gearhead Lathe

Grounding Requirements

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.

220V Operation

The power cord and plug specified under Circuit Requirements section for the Model SB1053 on the previous page has an equipment-grounding wire and a grounding prong. The plug must only be inserted into a matching receptacle (outlet) that is properly installed and grounded in accordance with all local codes and ordinances (see Figure 11).

GROUNDED

L15-30 RECEPTACLE

Grounding Prong

is Hooked

L15-30

PLUG

Current Carrying Prongs

Figure 11. Typical NEMA L15-30 plug and receptacle.

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

440V Operation

As specified in the Circuit Requirements section for the Models SB1054F and SB1055F on the previous page, these machines must be hardwired to the power source, using a locking switch (see Figure 12). 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 a qualified electrician or service personnel.

	LOCKING
DISCONNECT SWITCH
Power Source	Machine
Conduit	Conduit
Ground	Ground

Figure 12. Typical hardwire setup with a locking

disconnect switch.

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