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Grounding Instructions
This machine MUST be grounded. In the event
of certain malfunctions or breakdowns, grounding
reduces the risk of electric shock by providing a
path of least resistance for electric current.
For 220V operation: The power cord and plug
specified under "Circuit Requirements for 220V"
on the previous page have an equipment-ground-
ing 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 below).
GROUNDED
L15-30 RECEPTACLE
Grounding Prong
is Hooked
L15-30
PLUG
Current Carrying Prongs
Figure 2. Typical L15-30 plug and receptacle.
For 440V operation: As specified in "Circuit
Requirements for 440V" on the previous page, the
machine must be hardwired to the power source,
using a locking switch as a disconnecting means
(see below). The machine must also be connect-
ed to a grounded metal permanent wiring system;
or to a system having an equipment-grounding
conductor. Due to the complexity and high voltage
involved, this type of installation MUST be done
by a qualified electrician.
Locking
Disconnect Switch
Power
Source
Conduit
Ground
Figure 3. Typical hardwire setup with a locking
disconnect switch.
Model G0699 (Mfd. Since 5/15)
Machine
Conduit
Ground
Serious injury could occur if you connect
machine to power before completing 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 nec-
essary, do not connect the equipment-grounding
wire to a live (current carrying) terminal.
Check with a qualified electrician or service per-
sonnel 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, discon-
nect it from power, and immediately replace it with
a new one.
Extension Cords (220V Only)
We do not recommend using an extension cord
with this machine. If you must use an extension
cord, only use it if absolutely necessary and only
on a temporary basis.
Extension cords cause voltage drop, which can
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).
Any extension cord used with this machine must
be in good condition and contain a ground wire
and matching plug/receptacle. Additionally, it must
meet the following size requirements:
Minimum Gauge Size .............................8 AWG
Maximum Length (Shorter is Better).......50 ft.
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