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For Machines Mfg. Since 8/09 Model SB1029
-11-
PREPARATION
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.
Grounding Pin
Current Carrying Blades
GROUNDED
15-15 RECEPTACLE
15-15
PLUG
Figure 2. NEMA 15-15 plug and receptacle.
This machine is equipped with a power cord
that has an equipment-grounding wire and a
grounding plug (similar to the figure below).
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.
For 220V Connection (Prewired)
Power Source
LOCKING
DISCONNECT SWITCH
Machine
Conduit
Ground Ground
Conduit
Figure 3. Locking disconnect switch.
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.
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 or
plug 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 tool is properly grounded.
If you ever notice that a cord or plug is
damaged or worn, disconnect it from power, and
immediately replace it with a new one.
Extension Cords
Minimum Gauge Size ............................16 AWG
Maximum Length (Shorter is Better) ....50 ft.
We do not recommend using an extension cord
with this machine. If you must use one, only
use it if absolutely necessary and only on a
temporary basis.
Extension cords cause voltage drop, which may
damage electrical components and shorten motor
life. Voltage drop increases as the extension cord
size gets longer and the gauge size gets smaller
(higher gauge numbers indicate smaller sizes).
A
ny extension cord used with this machine
must contain a ground wire, match the required
plug and receptacle listed in the Circuit
Requirements for the applicable voltage, and
meet the following requirements:
For 440V Connection
Power supply connections that are hardwired
to the power source must be connected to a
grounded metal permanent wiring system, or
to a system having an equipment-grounding
conductor.