Grounding Instructions; Extension Cords - Master-force 240-0066 Owner's Manual

• Power supply to the motor is controlled by a locking
rocker switch. Remove the key to prevent unauthorized
use.

GROUNDING INSTRUCTIONS

WARNING
Improper connection of equipment grounding conductor
can result in the risk of electrical shock.
• The machine should be grounded while in use to protect
operator from electrical shock.
• In the event of an electrical short circuit, grounding
reduces the risk of electrical shock by providing an
escape wire for the electric current.
• This machine is equipped with an approved
3-conductor cord rated at 150V and a 3-prong
grounding type plug (Figure 9) for your protection
against shock hazards.
• Grounding plug should be plugged directly into a
properly installed and grounded 3-prong grounding-type
receptacle, as shown (Figure 9)
• The plug must be plugged into an outlet that is properly
installed and grounded in accordance with all local
codes and ordinances.
• Check with a qualified electrician or service personnel if
these instructions are not completely understood or if in
doubt as to whether the tool is properly grounded.
• Do not modify plug provided. If it will not fit in outlet,
have proper outlet installed by a qualified electrician.
Use only 3-wire extension cords that have 3-prong
grounding type plugs and matching 3-conductor
receptacles that accept the machine's plug, as show in
Figure 9
Figure 9 - 3-Prong Receptacle
Grounded outlet Box
3 - Prong Plug
WARNING
Do not permit fingers to touch the terminals of plug when
installing or removing from outlet.
• Inspect tool cords periodically, and if damaged, have
repaired by an authorized service facility.
• The 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 green (or green and yellow) wire to a live terminal.
A temporary 3-prong to 2-prong grounding adapter (see
Figure 10) may be used to connect this plug to a matching
2-conductor receptacle as shown in figure 10. The
temporary adapter should be used only until a properly
grounded outlet can be installed by a qualified electrician.
Figure 10 - 2-Prong Receptacle
Grounded outlet Box
In Canada, the use of temporary adapter is not permitted
by the Canadian Electric Code. Where permitted, the rigid
green tab or terminal on the side of the adapter must be
securely connected to a permanent electrical ground such
as a properly grounded water pipe, a properly grounded
outlet box or a properly grounded wire system.
• Many cover plate screws, water pipes and outlet boxes
are not properly grounded. To ensure proper ground,
grounding means must be tested by a qualified
electrician.

EXTENSION CORDS

Use proper extension cords. Make sure the extension
cord is in good condition. Use only 3-wire extension cords
have 3-prong grounding type plugs and 3-pole
receptacles which accept the tool plug. When using an
extension cord, make sure to use one heavy enough to
carry the current of the machine. An undersized cord will
cause a drop in the voltage, resulting in loss of power and
overheating. Use the table to determine the minimum wire
size (A.W.G.) extension cord.
Extension Cord Length
Grounding Prong
Wire Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A.W.G.
Up to 25 ft. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
25 to 50 ft. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
NOTE: Using extension cords over 50 ft. long is not
recommended.
Adapter
5
Grounding
Means