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HC-450/HC-300 Hole Cutting Tools
5. When operating a power tool outside, use an
outdoor extension cord marked “W-A” or “W”.
These cords are rated for outdoor use and reduce
the risk of electrical shock.
6. Use only three-wire extension cords which
have three-prong grounding plugs and three-
pole receptacles which accept the machines
plug. Use of other extension cords will not ground
the tool and increase the risk of electrical shock.
7. Use proper extension cords. (See chart.) Insuf-
ficient conductor size will cause excessive voltage
drop, loss of power and overheating.
8. Before using, test the Ground Fault Circuit
Interrupter (GFCI) provided with the power cord
to insure it is operating correctly. GFCI reduces
the risk of electrical shock.
9. Extension cords are not recommended unless
they are plugged into a Ground Fault Circuit
Interrupter (GFCI) found in circuit boxes or out-
let receptacles. The GFCI on the machine power
cord will not prevent electrical shock from the
extension cords.
10. Keep all electric connections dry and off the
ground. Do not touch plug with wet hands.
Reduces the risk of electric shock.
Personal Safety
1. Stay alert, watch what you are doing and use
common sense when operating a power tool.
Do not use tool while tired or under the influ-
ence of drugs, alcohol, or medications. A
moment of inattention while operating power tools
may result in serious personal injury.
2. Dress properly. Do not wear loose clothing or
jewelry. Contain long hair. Keep your hair,
clothing, and gloves away from moving parts.
Loose clothes, jewelry, or long hair can be caught
in moving parts.
3. Avoid accidental starting. Be sure switch is
OFF before plugging in. Carrying tools with your
finger on the switch or plugging in tools that have
the switch ON invites accidents.
Ridge Tool Company • Elyria, Ohio • U.S.A.
2
General Safety Information
WARNING! Read and understand all instructions.
Failure to follow all instructions listed
below may result in electric shock, fire,
and/or serious personal injury.
SAVE THESE INSTRUCTIONS!
Work Area Safety
1. Keep your work area clean and well lit. Cluttered
benches and dark areas invite accidents.
2. Do not operate power tools in explosive atmos-
pheres, such as in the presence of flammable
liquids, gases, or dust. Power tools create sparks
which may ignite the dust or fumes.
3. Keep bystanders, children, and visitors away
while operating a power tool. Distractions can
cause you to lose control.
Electrical Safety
1. Grounded tools must be plugged into an outlet,
properly installed and grounded in accordance
with all codes and ordinances. Never remove
the grounding prong or modify the plug in any
way. Do not use any adapter plugs. Check with
a qualified electrician if you are in doubt as to
whether the outlet is properly grounded. If the
tools should electrically malfunction or break down,
grounding provides a low resistance path to carry
electricity away from the user.
2. Avoid body contact with grounded surfaces
such as pipes, radiators, ranges and refrigera-
tors. There is an increased risk of electrical shock
if your body is grounded.
3. Don’t expose power tools to rain or wet condi-
tions. Water entering a power tool will increase the
risk of electrical shock.
4. Do not abuse cord. Never use the cord to carry
the tools or pull the plug from an outlet. Keep
cord away from heat, oil, sharp edges or moving
parts. Replace damaged cords immediately.
Damaged cords increase the risk of electrical shock.
Minimum Wire Gauge for Cord Set
Nameplate
Amps
Total Length (in feet)
0 – 25 26 – 50 51 – 100
0 – 6 18 AWG 16 AWG 16 AWG
6 – 10 18 AWG 16 AWG 14 AWG
10 – 12 16 AWG 16 AWG 14 AWG
12 – 16 14 AWG 12 AWG
NOT RECOMMENDED
Grounding prong
Cover of
grounded
outlet box
Grounding prong