Electrical
Grounding Instructions
This tool must be grounded while in use to protect
the operator from electric shock.
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 is equipped with
an electric cord having an equipment-grounding conductor
and 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.
Do not modify the plug provided. If it will not fit the outlet,
have the proper outlet installed by a qualified electrician.
Improper
connection
conductor can result in a risk of electric shock.
conductor, with insulation having an outer surface that is
green with or without yellow stripes, is the equipment-
grounding conductor. If repair or replacement of the
electric cord or plug is necessary, do not connect the
equipment-grounding conductor to a live terminal.
Check with a qualified electrician or service personnel if
the
grounding
instructions
understood, or if in doubt as to whether the tool is
properly grounded. Use only three wire extension cords
that have three-prong grounding plugs and three-pole
receptacles that accept the tool's plug.
Repair or replace a damaged or worn cord immediately.
115 Volt Operation
Referring to Figure 16:
As received from the factory, your drill press is ready to
run at 115-volt operation. This drill press, when wired for
115 volt, is intended for use on a circuit that has an
outlet and a plug that looks like the one illustrated in (A).
A temporary adapter, which looks like the adapter shown
in (B), may be used to connect this plug to a two-pole
receptacle if a properly grounded outlet is not available.
The temporary adapter should only be used until a
properly grounded outlet can be installed by a qualified
electrician. This adapter is not applicable in Canada. The
green colored rigid ear, lug, or tab, extending from the
adapter, must be connected to a permanent ground such
as a properly grounded outlet box.
Figure 16
of
the
equipment-grounding
are
not
completely
230 Volt Operation
Referring to Figure 17:
If 230V, single-phase operation is desired, the following
instructions must be followed:
Disconnect the machine from the power source.
The JET drill press motor has four numbered leads that
are factory connected for 115V operation, as shown in (A).
For 230V operation reconnect the leads as shown in (B).
The 115V attachment plug (C), supplied with the drill
press, must be replaced with a UL/CSA listed plug
suitable for 230V operation (D). Contact your local
Authorized JET Service Center or qualified electrician
for proper procedures to install the plug. The drill press
must comply with all local and national codes after the
230-volt plug is installed.
The drill press with a 230-volt plug should only be
The
connected to an outlet having the same configuration as
shown in (D). No adapter is available nor should be used
with the 230-volt plug.
Extension Cords
Make sure your extension cord is in good condition.
When using an extension cord, be sure to use one
heavy enough to carry the current your machine will
draw. An undersized cord will cause a drop in the line
voltage resulting in power loss and overheating. The
table following shows the correct size to use depending
on the cord length and nameplate ampere rating. If in
doubt, use the next heavier gauge. Remember, the
smaller the gauge number, the heavier the cord.
The drill press with a 230-volt plug should only be
connected to an outlet having the same configuration
(D, Fig. 17). No adapter is available or should be used
with the 230-volt plug.
Important: In all cases (115 or 230 volts), make certain the
receptacle in question is properly grounded. If you are not
sure, have a registered electrician check the receptacle.
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Figure 17
Length of Cord
AWG
000 – 25 Feet
16
025 – 50 Feet
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