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-6-G1004/1008 Vertical Milling Machine
110V Operation
The motor supplied with the G1004/G1008 is a
dual-voltage 110/120V or 220/240V motor. (For
information on operating at 220V, see the section
following entitled 220V Operation.) Under normal
use, the motor draws approximately 16 amps @
110V, therefore it should be connected to a circuit
that is protected by a 20 amp fuse or circuit
breaker. This should be satisfactory for normal
use, while providing enough protection against
motor damage caused by power surges. Grizzly
recommends that the circuit you use should be
dedicated, (i.e., the G1004 or G1008 should pro-
vide the only draw from that circuit). If frequent
circuit failures occur when using the milling
machine, contact our service department or your
local electrical contractor. You are cautioned that
equipment returned to us for service that shows
evidence of being over-fused will be repaired or
replaced totally at the customer’s expense,
regardless of the present warranty status.
It is also necessary to connect a cord and plug to
the machine. Be sure that both the plug and cord
are rated at 20 amps and must include a ground-
ing wire. See Figure 1.
SECTION 2: CIRCUIT REQUIREMENTS
Grounding
In the event of a malfunction or breakdown,
grounding provides a path of least resistance for
electric current to reduce the risk of electric
shock. This tool must be equipped with an elec-
tric cord having an equipment-grounding conduc-
tor which must be properly connected to a
grounding plug. The plug must be plugged into a
matching outlet that is properly installed and
grounded in accordance with all local codes and
ordinances.
Figure 1. Grounded plug configuration.
If you find it necessary to use an extension cord
with the Model G1004/G1008, make sure the -
cord is rated Hard Service (grade S) or better.
Refer to the chart in the standard safety instruc-
tions to determine the minimum gauge for the
extension cord.
The extension cord must also contain a ground
wire and plug pin. Always repair or replace exten-
sion cords when they become worn.
Extension Cords
Potential for electrical shock hazard, this
equipment must be grounded. Verify that
any existing electrical outlet and circuit you
intend to plug into is actually grounded. If it is
not, it will be necessary to run a separate 12
A.W.G. copper grounding wire from the outlet
to a known ground. Under no circumstances
should the grounding pin from any three-
pronged plug be removed. Serious personal
injury may occur.