PowerShip MIG-160MI User manual

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Operating Manual
INVERTER MIG/MMA WELDER
MIG-160MI MIG-250MI

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Table of Contents
SECTION 1: SAFETY INSTRUCTIONS AND WARNINGS…………………..3
1.1 Symbol Usage…………………………………………………………….…...3
1.2 Arc Welding Hazards…………………………………………………….…....4
1.3 Additional Symbols for Installation, operation, and Maintenance…….…........8
1.4 California Prop 65………………………………………………………….…10
1.5 Principal Safety Standards………………………………………………...….10
1.6 Eye Protection…………………………………………………………..…….11
1.7 Protective Clothing…………………………………………………..….....…13
1.8 EMF Information…………………….…………………………………...…..15
1.9 General Precautionary Label……………………………………..…….….….16
SECTION 2: INTRODUCTION AND SPECIFICATIONS…………………………….17
2.1 Equipment Identification…………………………………………….……….17
2.2 Description…………………………………………………………….……...18
2.3 Specifications…………………………………………………………….…...18
2.4 Duty Cycle…………………………………………………………….……...19
2.5 Transportation Methods………………………………………...…….………19
SECTION 3: INSTALLATION..............................................................................19
3.1 Selecting a Location…………………………………………………….…….19
3.2 Environment…………………………………………………………………..20
3.3 Electrical Input Power………………………………………………….……..20
3.4 Electromagnetic Compatibility………………………………………….…….21
3.5 Setup for Welding……………………………………………………….…….23
3.6 MIG (GMAW) Setup…………………………………………………….……23
3.7 Flux Core (FCAW) Setup………………………………………………..…….24
3.8 Changing Between Processes…………………………………………..……...24
3.9 Installing Wire Rolls …………………………………………………..………25
SECTION 4: OPERATION………………………………………………….….…27
4.1 General Operation………………………………………………………..…….27
4.2 Front Panel/ Controls……………………………………………………..……27
4.3 Selecting Wire Types……………………………………………………..…….28
4.4 Back Panel/ Gas Connector………………………………………………..…..29
4.5 Holding &Positioning Welding Gun……………………………………..…….31
SECTION 5: MAINTENANCE AND TROUBLESHOOTING………………...32
5.1 Maintenance……………………………………………………………………32
5.2 Trouble shooting………………………………………………………....…….33
5.3 System Schematic………………………………………………………..…….33
5.4 Parts List……………………………………………………………….....……35

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SECTION 1:
SAFETY INSTRUCTIONS AND WARNINGS
1.1 Symbol Usage
This manual contains important information that you need to know and understand in
order to assure YOUR SAFETY and PROPER OPERATION of EQUIPMENT. The
following symbols help you recognize this information. Please read the manual and
pay attention to these sections.
Save These Important Safety Instructions!
Read and understand all of these safety instructions. Be sure to retain them
for future use.
WARNING!
WARNINGS INDICATE A CERTAINTY OR STRONG POSSIBILITY OF
PERSONAL INJURY OR DEATH IF INSTRUCTIONS ARE NOT
FOLLOWED.
CAUTION:
CAUTIONS INDICATE A POSSIBILITY OF EQUIPMENT DEMAGE IF
INSTRUCTIONS ARE NOT FOLLOWED PROPERLY.
Note:
Note give helpful information
Welding products and welding processes can cause serious injury or death, or damage
to other equipment or property, if the operator does not strictly observe all safety rules
and take precautionary actions.
Safe practices are outlined in the American National Standard Z49.1
entitled:SAFETY IN WELDING AND CUTTING. This publication and other
guides to what you should learn before operating this equipment are listed at the end
of these safety precautions. HAVE ALL INSTALLATION, OPERATION, REPAIR
WORK, AND MAINTENANCE PERFORMED BY QULIFIED PROFESSIONALS.

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1.2 Arc Welding Hazards
The symbols shown below are used throughout this manual to call attention to and
identify possible hazards. When you see the symbol, watch out, and follow the related
instructions to avoid the hazard. The safety information given below is only a
summary of the more complete safety information found in the Safety Standards listed
in Section 1-4. Read and follow all Safety Standards.
Electric Shock can kill.
Touching live electrical parts can cause fatal shocks or severe burns.
The electrode and work circuit is electrically live whenever the
output is on. The input power circuit and machine internal circuits
are also live when power is on. In semiautomatic or automatic wire
welding, the wire, wire reel, drive roll housing, and all metal parts
touching the welding wire are electrically live. Incorrectly installed
or improperly grounded equipment is a hazard.
 Do not touch live electrical parts.
 Wear dry, hole-free insulating gloves and body protection.
 Insulate yourself from work and ground using dry insulating mats or covers big
enough to prevent any physical contact with the work or ground.
 Do not use AC output in damp areas, if movement is confined, or if there is a
danger of falling.
 Use AC output ONLY if required for the welding process.
 If AC output is required; use remote output control if present on unit.
 Disconnect input power or stop engine before installing or servicing this
equipment. Lockout/tagout input power according to OSHA 29 CFR
1910.147(see Safety Standards).
 Properly install and ground this equipment according to its Owner’s Manual and
national, state, and local codes.
 Always verify the supply ground-check and be sure that input power cord ground
wire is properly connected to ground terminal in disconnect box or that cord plug
is connected to a properly grounded receptacle outlet.
 When making input connections attach proper grounding conductor
first-double-check connections.
 Frequently inspect input power cord for damage or bare wiring-replace cord
immediately if damaged-bare wiring can kill.
 Turn off all equipment when not in use.
 Do not use worn, damaged, undersized, or poorly spliced cables.
 Do not drape cables over your body.
 If earth grounding of the work-piece is required, ground it directly with a separate
cable.
 Do not touch electrode if you are in contact with the work, ground, or another
electrode from a different machine.

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 Use only well-maintained equipment. Repair or replace damaged parts at once.
Maintain unit according to manual.
 Wear a safety harness if working above floor level.
 Keep all panels and covers securely in place.
 Clamp work cable with good metal-to-metal contact to work-piece or worktable
as near the weld as practical.
 Insulate work clamp when not connected to work-piece to prevent contact with
any metal object.
 Do not contact more than one electrode or work cable to any single weld output
terminal.
SIGNIFICANT DC VOLTAGE exists after removal of input power
 Turn Off inverter, disconnect input power, and discharge input capacitors
according to instructions in Maintenance Section before touching any parts.
FUMES AND GASES can be hazardous.
Welding produces fumes and gases. Breathing these fumes and gases
can be hazardous to your health.
 Keep your head out of the fumes. Do not breathe the fumes.
 If inside, ventilate the area and /or use exhaust at the arc to remove welding
fumes and gases.
 If ventilation is poor, use an approved air-supplied respirator.
 Read the Material Safety Data Sheets (MSDSs) and the manufacturer’s
instructions for metals. Consumables. Coatings, cleaners, and degreasers.
 Work in a confined space only if it is well ventilated, or while wearing an
air-supplied respirator. Always have a trained watchperson nearby. Welding
fumes and gases can displace air and lower the oxygen level causing injury or
death. Be sure the breathing air is safe.
 Do not weld in locations near degreasing, or spraying operations. The heat and
rays of the arc can react with vapors to form highly toxic and irritating gases.
 Do not weld on coated metals, such as galvanized, lead, or cadmium plated steel,
unless the coating is removed from the weld area, the area is well ventilated, and
if necessary, while wearing an air-supplied respirator. The coatings and any
metals containing these elements can give off toxic fumes if welded.
 Shut off shielding gas supply when not in use.

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ARC RAYS can burn eyes and skin.
Arc rays from the welding process produce intense visible and invisible (ultraviolet
and infrared) rays that can burn eyes and skin. Sparks fly off from the weld.
 Wear a welding helmet fitted with a proper shade of filter to protect your face and
eyes when welding or watching (see ANSI Z49.1 and Z87.1 listed in Safety
Standards1.4).
 Wear approved safety glasses with side shields under your helmet.
 Use protective screens or barriers to protect others from flash and
glare; warn others not to watch the arc.
 Wear protective clothing made from durable, flame-resistant
material(leather and wool) and foot protection.
Welding can cause fire or explosion.
Welding on closed containers, such as tanks, drums, or pipes, can cause them to blow
up. Sparks can fly off from the welding arc. The flying sparks, hot work-piece, and
hot equipment can cause fires and burns. Accidental contact of electrode to mental
objects can cause sparks, explosion, overheating, or fire. Check and be sure the area is
safe before doing any welding.
 Protect yourself and others from flying sparks and hot metal.
 Do not weld where flying sparks can strike flammable material.
 Removal all flammables within 35ft. (10.7m) of the welding arc. If this is not
possible, tightly cover them with approved covers.
 Be alert that welding sparks and hot materials from welding can easily go through
small cracks and openings to adjacent areas.
 Watch for fire, and keep a fire extinguisher nearby.
 Be aware that welding on a ceiling, floor, bulkhead, or partition
can cause fire on the hidden side.
 Do not weld on closed containers such as tanks, drums, or pipes,
unless they are properly prepared according to AWS F4.1(see
Safety Standards).
 Connect work cable to the work as close to the welding area as practical to
prevent welding current from traveling long, possibly unknown paths and causing
electric shock and hazards.
 Do not use welder to thaw frozen pipes.
 Remove stick electrode from holder or cut off welding wire at contact tip when
not in use.
 Wear oil-free protective garments such as leather gloves, heavy shirt, cuff less
trousers, high shoes, and a cap.
 Remove any combustibles, such as butane lighters or matches, from your person

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before doing any welding
FLYING MENTAL can injure eyes.
 Welding, chipping, wire brushing, and grinding cause
sparks and flying metal. As welds cool, they can throw off
slag.
 Wear approved safety glasses with side shields even under
your welding helmet.
HOT PARTS can cause severe burns.
 Do not touch hot bare handed.
 Allow cooling period before working on gun or torch.
MAGNETIC FIELDS can affect pacemakers.
 Pacemaker wearers keep away.
 Wearers should consult their doctor before going near arc welding, gouging, or
spot welding operations.
NOISE can damage hearing.
 Excessive noise from some processes or equipment can damage
hearing.
 Wear approved ear protection if noise level is high.
CYLINDERS can explode if damaged.
Shielding gas cylinders contain gas under high pressure. If
damaged, a cylinder can explode. Since gas cylinders are
normally part of the welding process, be sure to treat them
carefully.

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 Protect compressed gas cylinders from excessive heat,
mechanical shocks, slag, open flames, sparks, and arcs.
 Install cylinders in an upright position by securing to a stationary
support or cylinder rack to prevent falling or tipping.
 Keep cylinders away from any welding or other electrical circuits.
 Never drape a welding torch over a gas cylinder.
 Never allow a welding electrode to torch any cylinder.
 Never weld on a pressurized cylinder-explosion will result.
 Use only correct shielding gas cylinders, regulators, hoses, and
fittings designed for the specific application; maintain them and
associated parts in good condition.
 Turn face away from valve outlet when opening cylinder
valve.
 Keep protective cap in place over valve except when cylinder
is use or connected for use.
 Read and follow instruction on compressed gas cylinders,
associated equipment , and CGA publication P-1listed in
Safety Standards.
1.3 Additional Symbols for Installation, Operation, and Maintenance.
FIRE OR EXPLOSION hazard.
 Do not install or place unit on, over, or near combustible surface.
 Do not install unit near flammables.
 Do not overload building wiring-be sure power supply system is properly sized,
rated, and protected to handle this unit.
FALLING UNIT can cause injury.
 Use lifting eye to lift unit only, NOT running gear, gas cylinders, or any other
accessories.
 Use equipment of adequate capacity to lift and support unit.
 If using lift forks to move unit, be sure forks are long enough to extend beyond
opposite side of unit.
OVERUSE can cause OVERHEARTING
 Allow cooling period ; follow rated duty cycle.
 Reduce current or duty cycle before starting to weld again.
 Do not block or filter airflow to unit.

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STATIC (ESD) candamage PC boards.
 Put on grounded wrist strap BEFORE handling boards or parts.
 Use proper static-proof bags and boxes to store, move, or ship
PC boards.
MOVING PARTS can cause injury.
 Keep away from moving parts.
 Keep away from pinch points such as drive rolls.
WELDING WIRE can cause injury.
 Do not press gun trigger until instructed to do so.
 Do not point gun toward any parts of the body, other people,
or any metal when threading welding wire.
MOVING PARTS can cause injury.
 Keep away from moving parts such as fans.
 Keep all doors, panels, covers, and guards closed and securely in place.
H.F RADIATION can cause interference.
 High-frequency (H.F) can interfere with radio navigation, safety services,
computers, and communications equipment.
 Have only qualified persons familiar with electronic equipment perform this
installation.

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 The user is responsible for having a qualified electrician promptly correct any
interference problem resulting from the installation.
 If notified by the FCC about interference, stop using the equipment at once.
 Have the installation regularly checked and maintained.
 Keep high-frequency source doors and panels tightly shut, keep spark gaps at
correct setting, and use grounding and shielding to minimize the possibility of
interference.
ARC WELDING can cause interference.
 Electromagnetic energy can interfere with sensitive electronic equipment such as
computers and computer-driven equipment such as robot.
 Be sure all equipment in the welding area is electromagnetically compatible.
 To reduce possible interference. Keep weld cables as short as possible, close
together, and down low. such as on the floor.
 Locate welding operation 100 meters from any sensitive electronic equipment.
 Be sure this welding machine is installed and grounded according to this manual.
 If interference still occurs, the user must take extra measures such as moving the
welding machine, using shielded cables. Using line filters. or shielding the work
area.
1.4 California Proposition 65 Warning
 Welding or cutting equipment produces fumes or gases which contain chemicals
known to the state of California to cause birth defects and, in some cases,
cancer.(California Health & Safety Code Section 25249.5 et. seq.)
1.5 Principal Safety Standards
Safety in Welding and Cutting, ANSI Standard Z49.1, from
American Welding Society, 550 N.W LeJeune Rd., Miami,
FL33126 .
Safety and Health Standards.OSHA 29 CFR 1910 ,from
Superintendent of Documents, U.S Government Printing Office, Washington, D.C
20402.
Recommended Safe Practices for the Preparation for Welding and Cutting of
Containers That Have Held Hazardous Substances. American Welding Society
Standard AWS F4.1, from American Welding Society, 550 N.W Lejeune rd. Miami,
FL33126.
National Electrical Code, NFPA Standard 70,from National Fire protection
Association, Battery march Park, Quincy, MA02269.
Safe Handling of Compressed Gases in Cylinders, CGA Pamphlet P-1, from
Compressed Gas Association, 1235 Jefferson Davis Highway, Suite 501, Arlington,
VA 22202.
Code for Safety in Welding and Cutting.CSA Standard W117.2 , from Canadian
Standards Association, Standards Sales,178 Rexdale Blvd, Rexdale Ontario,

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Canada M9W 1R3.
Safe Practices for Occupation and Education Eye and Face Protection, ANSI Standard
Z87.1 from American National Standards institute, 1430 Broadway New York,
NY10018.
Cutting and Welding Processes, NFPA standard 51B ,FROM National Fire Protection
Association, Battery march Park, Quincy, MA02269
1.6 Eye protection
Eye and face protectors for welding and related tasks, such as grinding and chipping,
should comply with the requirements of ANSI Z87.1. Look for labels for markings
indicating compliance. Depending on the specific work task, appropriate eye/face
protection may include safety glasses with side protection (side shields or
wrap-around frames), goggles, face shields, welding helmets, curtains, or
combinations of the above.
 Choose a tight fitting helmet to help reduce light reflection into the helmet
through the space between the shell and the head.
 Wear the helmet correctly. Do not use it as a hand shield.
 Protect the shade lens from impact and sudden temperature changes that could
cause it to crack.
 Use a cover lens to protect the filter shade lens. Replace the cover lens if it gets
scratched or hazy.
 Make sure to replace the gasket periodically if your helmet used one.
 Replace the clear retaining lens to protect your eyes from broken pieces.
 Clean lenses periodically.
 Discard pitted or damaged lenses.

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The correct filter shade is selected according to the welding process. Wire
diameter, and operating current. The table below gives the correct shade numbers
for different situation.
 ALWAYS use suggested shade numbers instead of minimum shades.
 Provide additional task lighting that suits welders’ needs.
 ALWAYS use the same shade as the welders’ if you are directly observing the
welding arc.
 Do not use gas welding goggles for arc welding.
 Do not substitute modified glassed, sunglasses, smoked plastic or other materials
for proper welding lenses.

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LENS SHADE SELECTOR
Shade numbers are given as a guide only and may be varied to suit individual needs.
ProcessElectrode Size in.Arc CurrentMinimumSuggested
(mm) (Amperes) Protective Shade No.
Shade (Comfort)
Shielded Metal ArcLess than 3/32(2.4) Less than60 7 -
Welding (SMAW)3/32-5/32(2.4-4.0) 60-160 810
5/32-1/4(4.0-6.4) 160-250 10 12
More than 1/4(6.4) 250-550 11 14
Gas Metal Arc Less than607 -
Welding(GMAW) 60-160 10 11
And Flux Cored Arc160-250 10 12
Welding (FCAW)250-550 10 14
Gas Tungsten Arc Less than50 8 10
Welding (GTAW) 50-100 8 12
150-500 10 14
Air Carbon Arc Less than500 10 12
Cutting(CAA-A) 500-1000 11 14
Plasma Arc WeldingLess than206 6 to 8
(PAW) 20-100 8 10
100-400 10 12
400-800 11 14
Plasma Arc CuttingLess than20 4 4
(PAC) 20-40 5 5
40-60 6 6
60-80 8 8
80-300 8 9
300-400 9 12
400-800 10 14
*As a rule of thumb, start with a shade that is too dart to see the weld zone. Then go
to a lighter shade which gives sufficient view of the weld zone without going below
the minimum.
1.7 Protective Clothing
Like other jobs or careers, welders must wear suitable protective equipment. In
General, Personal Protective Equipment (PPE) must protect against hazards such as
burns, sparks, spatter, electric shock, and radiation. The use of PPE is a good sage
practice and may be required by regulatory agencies.
 Wear clothing made from heavyweight, tightly woven, 100% wool or cotton to
protect from UV radiation. Hot metal, sparks and open flames, Flame retardant
treatments become less effective with repeated laundering.
 Keep clothing clean and free of oils. Greases and combustible contaminants.
 Wear long-sleeved shirts with buttoned cuffs and a collar to protect the neck.
Dark colors prevent light reflection,

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 Tape shirt pockets closed to avoid collecting sparks or hot metal or keep them
covered with flaps.
 Pant legs must not have cuffs and must cover the tops of the boots. Cuffs can
collect sparks.
 Repair all frayed edges, tears or holes in clothing.
 Wear high top boots fully laced to prevent sparks from entering into the boots.
 Use fire-resistant boot protectors or spats strapped around the pant legs and boot
tops, to prevent sparks from bouncing in the top of the boots.
 Remove all ignition sources such as matches and butane lighters from pockets.
Hot welding sparks may light the matches or ignite leaking lighter fuel.
 Wear gauntlet –type cuff leather gloves or protective sleeves of similar material,
to protect wrists and forearms. Leather is a good electrical insulator if kept dry.
 Direct any spark spray away from your clothing.
 Wear leather aprons to protect your chest and lap from sparks when standing or
sitting.
 Wear layers of clothing. To prevent sweating , avoid overdressing in cold weather.
Sweaty clothes cause rapid heat loss. Leather welding jackets are not very
breathable and can make your sweat if you are overdressed.
 Wear a fire-resistant skull cap or balaclava hood under your helmet to protect
your head from burns and UV radiation.
 Wear a welder’s face shield to protect your face from UV radiation and flying
particles.
 DO NOT wear ring or other jewelry.
 DO NOT wear clothing made from synthetic or synthetic blends. The synthetic
fabric can burn vigorously, melt and produce bad skin burns.

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Protect all areas of your body from injury during welding or cutting by wearing the
proper protective clothing and equipment.
Do not weld or cut unless wearing the necessary PPE as specified in this manual and
in ANSI Z49.1.
1.8 EMF information
Considerations about Welding and the Effects of Low Frequency Electric and
Magnetic Fields.
Welding current, as it flows through welding cables, will cause electromagnetic fields,
There has been and still is some concern about such fields. However, after examining
more than 500 studies spanning 17 years of research, a special blue ribbon committee
of the National

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Research council concluded that:“The body of evidence, in the committee’s judgment, has not
demonstrated that exposure to power-frequency electric and magnetic fields is a human-health
hazard.”
However, studies are still going forth and evidence continues to be examined. Until the final
conclusions of the research are reached, you may wish to minimize your exposure to
electromagnetic fields when welding or cutting.
To reduce magnetic fields in the workplace, use the following procedures:
1, Keep cables close together by twisting or taping them.
2, Arrange cables to one side and away from the operator.
3, Do not coil or drape cables around your body.
4, Keep welding power source and cables as far away from operator as practical.
5, Connect work clamp to work-piece as close to the weld as possible.
About pacemakers:
Pacemaker wearers consult your doctor first. If cleared by your doctor, then following the above
procedures is recommended.
1.9 General Precautionary Label
Found on unit and packaging. Do not attempt to remove, destroy, or cover label.

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Section 2:
INTRODUCTION AND SPECIFICATIONS
2.1 Equipment Identification
The unit’s identification number (specification or part number) ,model, and serial number usually
appear on a nameplate attached to the machine. Equipment which does not have a nameplate
attached to the machine is identified only by the specification or part number printed on the
shipping container. Record these numbers for future reference.

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2.2 Description
MIG-MI Series is the perfect choice for projects and repairs around the home and auto body shop.
This MIG welder will produce a cleaner bead with less splatter than a regular flux core wire
welder. The welder runs off of a 120V/230v volt outlet and produces an output MAX. 130 or 150
amps.It uses standard flux-core wire(E71-gs) or solid wire and has settings to easily adjust the
output according to the thickness changing the polarity and welds steel from 24 gauge to 3/16” . It
also includes MIG Torch, Electrode holder, Earth Clamp, Hammer and Brusher. The detailed
technology information is as follows,
2.3 Specifications
MIG – 160 MI MIG – 250 MI
Power voltage（V） 120V/230V 120V/230V
Frequency （HZ） 50/60 Hz 50/60 Hz
Rated input current (A) 21.7A 26.8A
Effective input current, max. (A）
28A 34.5A
No-load voltage（V） 56V 56V
Output current（A） 130A 150A
Rated output voltage（V） 25.2V 26V
Duty cycle （%） 60 60
No-load loss （W） 40W 40W
Efficiency（%） 85 85
Power factor 0.73 0.73
Insulation grade F F
Housing protection grade IP21S IP21S
The recommended time delay fuse or circuit breaker size is 30 amp. An individual branch circuit
capable of carrying 30 amperes and protected by fuses or circuit breaker is recommended for this
application. Fuse size is based on not more than 200 percent of the rated input amperage of the
welding power source (Based on Article 630, National Electrical Code).
The values specified in the table above are optimal values, your values may differ. Individual
equipment may differ from the above specifications due to in part, but not exclusively, to any one
or more of the following; variations or changes in manufactured components, installation location
and conditions and local power grid supply conditions.

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2.4 Duty Cycle
The rated duty cycle of a welding power source, is a statement of the time it may
be operated at its rated welding current output without exceeding the temperature
limits of the insulation of the component parts. To explain the 10 minute duty cycle
period the following example is used. Supposed a Welding Power Source is designed to operate at
a 20% duty cycle, 90 amperes at 18.5 volts. This means that it has been designed and built to
provide the rated amperage (90A) for 2 minutes, i.e.arc welding time, out of every 10 minute
period (20% of 10 minutes is 2 minutes). During the other 8 minutes of the 10 minute period the
welding Power Source must idle and allowed to cool.
Duty cycle is percentage of 10 minutes that unit can weld at rated load without overheating.
Exceeding duty cycle can damage unit and void warranty.
2.5 Transportation Methods
Electric Shock can kill.
DO NOT TOUCH live electric parts. Disconnect input power conductors from de-energized
supply line before moving the welding power source.
Lift unit with handle on top of case. Use handcart or similar device of adequate capacity. If using a
fork lift vehicle, place secure unit on a proper skid before transporting.
SECTION 3:
INSTALLATION
3.1 Selecting a Location
Be sure to locate the welder according to the following guidelines:
 In areas, free from moisture and dust.
 Ambient temperature between 22F （10 c) to 104 F(40C)
 In areas, free from oil, steam and corrosive gases.
 In areas, not subjected to abnormal vibration or shock
 In areas, not exposed to direct sunlight or rain.
 Place at a distance of 12”-18”(300-460mm) or more from walls or similar that could restrict
natural air flow for cooling.

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3.2 Environment
These units are designed for use in environments with increased hazard of
electric shock. Examples of environments with increased hazards are:
A: In locations in which freedom of movement is restricted, so that the operator
is forced to perform the work in a cramped (kneeling, sitting or lying) position
with physical contact with conductive parts.
B: In locations which are fully or partially limited by conductive elements, and
in which there is a high risk of unavoidable or accidental contact by the
operator.
C: In wet or damp hot location where humidity or perspiration considerably reduces the skin
resistance of the human body and the insulation properties of accessories.
Environments with increased hazard of electric shock do not include places where electrically
conductive parts in the near vicinity of the operator, which can cause increased hazard ,have been
insulated.
3.3 Electrical Input Power
The MIG-160MI and MIG-250MI are three-wire grounded device (hot-neutral-ground) rated for
120/230V.
THE MIG-160MIAND MIG-250MI SHOULD BE OPERATED FROM A
SINGLE-PAHSE 60Hz, AC POWER SUPPLY.THE INPUT VOLTAGE SHOULD
MATCH THE ELECTRICAL INPUT VOLTAGE SHOWN ON THE INPUT DATA
LABEL ON THE UNIT NAMEPLATE. SEE SECTION 2.1 FOR EXAMPLE.
DO NOT ATTEMPT TO CUT OFF THE GROUND PIN TO FIT IT TO A 1-15R
OUTLET OR EXTENSION CORD. BY DOING SO, THE
LIVE/NEUTRAL POLARITY IS LOST AND WILL INCREASE
THE RISK OF SHOCK.
The time-delay fuses or circuit breaker of an individual branch circuit may trip when welding with
this product due to the amperage rating of the time-delay fuses or circuit breaker.
The recommended time-delay fuses or circuit breaker size is 30 amperes. Fuse/circuit breaker size
is based on not more than 200 percent of the rated input amperage of the welding power
source( Based on Article 630, National Electrical Code).
An individual branch circuit capable of carrying 30 amperes and time-delay fuses or circuit
breaker protection is recommended for this application.
Each unit incorporates an INRUSH circuit. When the MAIN CIRCUIT SWITCH is turned on, the