Southbend SB1053 owner manual Power Supply Requirements, Availability, Full-Load Current Rating

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

Power Supply

Requirements

Availability

Before installing the machine, consider the availability and proximity of the required power supply circuit. If an existing circuit does not meet the requirements for this machine, a new circuit must be installed.

To minimize the risk of electrocution, fire, or equipment damage, installation work and electrical wiring must be done by a qualified electrician in accordance with all applicable codes and standards.

Serious injury could occur if you connect the machine to power before completing the setup process. DO NOT connect to power until instructed later in this manual.

Full-Load Current Rating

The full-load current rating is the amperage a machine draws at 100% of the rated output power. On machines with multiple motors, this is the amperage drawn by the largest motor or sum of all motors and electrical devices that might operate at one time during normal operations.

SB1053 Full-Load Rating	20.3 Amps
SB1054F Full-Load Rating	10.15 Amps
SB1055F Full-Load Rating	10.23 Amps

The full-load current is not the maximum amount of amps that the machine will draw. If the machine is overloaded, it will draw additional amps beyond the full-load rating.

If the machine is overloaded for a sufficient length of time, damage, overheating, or fire may result—especially if connected to an undersized circuit. To reduce the risk of these hazards, avoid overloading the machine during operation and make sure it is connected to a power supply circuit that meets the requirements in the following section.

Circuit Requirements

Model SB1053

This machine is prewired to operate on a 220V power supply circuit that has a verified ground and meets the following requirements:

Nominal Voltage		220V/230V
Cycle		60 Hz
Phase		3-Phase
Circuit Rating		30 Amps
Plug/Receptacle Type		NEMA L15-30
Cord	"S"-Type, 4-Wire, 10 AWG, 300 VAC

Model SB1054F & SB1055F

These machines are prewired to operate on a 440V power supply circuit that has a verified ground and meets the following requirements:

Nominal Voltage	440V/480V
Cycle	60 Hz
Phase	3-Phase
Circuit Rating	15 Amps

Connection .. Hardwire with Locking Switch

A power supply circuit includes all electrical equipment between the main breaker box or fuse panel in your building and the incoming power connections inside the machine. This circuit must be safely sized to handle the full-load current that may be drawn from the machine for an extended period of time.

For your own safety and protection of property, consult a qualified electrician if you are unsure about wiring practices or electrical codes in your area.

Note: The circuit requirements listed in this manual apply to a dedicated circuit—where only one machine will be running at a time. If this machine will be connected to a shared circuit where multiple machines will be running at the same time, consult a qualified electrician to ensure that the circuit is properly sized for safe operation.

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