MAC TOOLS MW250 User manual

February
1995
Form:
OM-154501A
Effective
With
Seria
No.
KF817681
MW250
OWNERS
MANUAL
~
IMPORTANT:
Read
and
understand the
entire
contents
of
this
manual,
with
special emphasis
on
the
safety
material
throughout
the
manual,
before
installing,
operating,
or
maintaining
this
equipment.
This unit and
these
instructions
are
for
use
only by
persons
trained
and
experienced
in
the
safe
operation
of
welding
equipment.
Do
not
allow untrained
persons
to
install,
operate,
or
maintain
this unit.
Contact
your
distributor
if
you
do
not
fully
understand
these
instructions.
TOLSfi
coven
5/92*

ST-157 072-A PRINTED
IN
LISA

ARC WELDING
SAFETY
PRECAUTIONS
£~
WARNING
ARC WELDING
can
be hazardous.
PROTECT YOURSELF AND OTHERS FROM POSSIBLE SERIOUS INJURY OR
DEATH. KEEP
CHILDREN
AWAY.
PACEMAKER WEARERS KEEP AWAY UNTIL
CONSULTING
YOUR DOCTOR.
In
welding,
as
in
most
jobs,
exposure
to
certain hazards
occurs.
Welding
is safe when
precautions
are
taken.
The
safety
information
given
below is
only
a
summary
of
the
more
complete
safety
information
that will
be found
in
the
Safety
Standards
listed
on
the
next
page.
Read and follow all
Safety
Standards.
HAVE
ALL
INSTALLATION,
OPERATION, MAINTENANCE,
AND REPAIR
WORK PERFORMED ONLY
BY
QUALIFIED PEOPLE.
/,,~
,
~9-~-~2-
~._
ARC
RAYS
can
burn
eyes
and
skin;
NOISE
can
damage hearing.
Arc
rays
from
the
welding
process
produce
intense
heat
and
strong
ultraviolet
rays
that
can
burn
eyes
and skin. Noise
from
some
processes
can
damage
hearing.
1.
2.
3.
4.
5.
Wear
a
welding
helmet
fitted with
a
proper
shade
of
filter
(see
ANSI
Z49.1
listed
in
Safety Standards)
to
protect
your
face and
eyes
when
welding
or
watching.
Wear
approved safety glasses.
Side shields recommended.
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
(wool
and
leather)
and
foot
protection.
Use
approved
ear
plugs
or
ear
muffs if
noise level is
high.
FUMES
AND
GASES
can
be
hazardous
5.
Work
in
a
confined
space
only
if it
is
well
ventilated,
or
while
to
your
health.
~
I
Welding
produces
fumes and
gases.
Breathing
I
~I these fumes
and
gases
can
be
hazardous
to
your
health.
6.
wearing
an
air-supplied respirator.
Shielding
gases
used
for
welding
can
displace
air
causing
injury
or
death.
Be
sure
the
breathing
air
is
safe.
.
Do
not
weld
in
locations
near
degreasing, cleaning,
or
spraying
1.
Keep
your
head
out
of the
fumes.
Do
not
breathe the fumes.
2.
If
inside,
ventilate
the
area
and/or
use
exhaust
at
the
arc
to
operations.
The
heat
and
rays
of the
arc
can
react
with
vapors
to
form
highly
toxic
and
irritating
gases.
remove
welding
fumes
and
gases.
7.
Do
not
weld
on
coated
metals,
such
as
galvanized,
lead,
or
3.
If
ventilation
is
poor,
use
an
approved
air-supplied
respirator.
cadmium
plated
steel,
unless
the
coating
is
removed
from
the
4.
Read
the
Material
Safety
Data
Sheets
(MSDSs)
and
the
weld
area,
the
area
is
well
ventilated,
and
if
necessary,
while
manufacturers instruction
for
metals,
consumables,
coatings,
wearing
an
air-supplied
respirator.
The
coatings
and
any
metals
and cleaners,
containing
these elements
can
give
off
toxic fumes
if
welded.
WELDING
can cause
fire
or
explosion.
5.
Watch
for
fire,
and
keep
a
fire
extinguisher nearby.
Sparks
and
spatter
fly
off from
the
welding
arc.
The
flying sparks
and
hot
metal,
weld
spatter,
hot
workpiece,
and
hot
equipment
can
cause
fires
and
burns. Accidental
contact
of
electrode
or
welding
wire
to
metal
objects
can
cause
sparks, overheating,
or
fire.
6.
7.
8.
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
or
drums.
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 fire
1.
Protect
yourself
and others from
flying
sparks
and hot metal.
hazards.
2.
Do
not
weld where
flying
sparks
can
strike flammable
material.
9.
Do
not
use
welder
to
thaw
frozen
pipes.
3.
Remove
all flammables within
35
ft
(10.7
m)
of the
welding
arc.
10.
Remove
stick
electrode
from
holder
or cut
off
welding
wire
at
If
this is
not
possible,
tightly
cover
them with
approved
covers,
contact
tip
when
not
in
use.
4.
Be
alert that
welding
sparks
and hot materials
from
welding
can
11.
Wear oil-free
protective
garments
such
as
leather
gloves,
easily
go
through
small cracks and
openings
to
adjacent
areas.
heavy
shirt,
cuffless
trousers,
high
shoes,
and
a
cap.
FLYING SPARKS
AND
HOT
METAL
can
1.
cause
injury,
Chipping
and
grinding
cause
flying
metal.
As
welds
2.
cool,
they
can
throw off
slag.
Wear
approved
face
shield
or
safety
goggles.
Side
shields
recommended.
Wear
proper
body
protection
to
protect
skin.
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.
1.
Do
not
touch live electrical
parts.
2.
Wear
dry,
hole-free
insulating
gloves
and
body
protection.
3.
Insulate
yourself
from
work
and
ground using
dry
insulating
mats
or
covers.
4.
Disconnect
input
power
or
stop
engine
before
installing
or
servicing
this equipment.
5.
Properly
install and
ground
this
equipment
according
to
its
Owners
Manual
and
national,
state,
and
local
codes.
6.
Turn off all
equipment
when
not
in
use.
7.
Do
not
use
worn,
damaged,
undersized,
or
poorly spliced
cables.
8.
Do
not
wrap
cables around
your
body.
9.
Ground
the
workpiece
to
a
good
electrical
(earth)
ground.
10.
Do
not
touch electrode
while
in
contact
with the work
(ground)
circuit.
11.
Use
only
well-maintained
equipment. Repair
or
replace
damaged
parts
at
once.
12. Wear
a
safety
harness
to
prevent
falling
if
working
above
floor
level.
13.
Keep
all
panels
and
covers
securely
in
place.

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.
1, Protect
compressed
gas
cylinders
from excessive
heat,
mechanical
shocks,
and
arcs.
2.
Install
and
secure
cylinders
in
an
upright
position
by
chaining
them
to
a
stationary
support
or
equipment
cylinder
rack
to
prevent
falling
or
tipping.
3.
Keep cylinders
away
from
any
welding
or
other
electrical
circuits.
4.
Never
allow
a
welding
electrode
to
touch
any
cylinder.
5. Use
only
correct
shielding
gas
cylinders,
regulators,
hoses,
and
fittings
designed
for
the
specific
application;
maintain
them
and
associated
parts
in
good
condition.
6.
Turn
face
away
from
valve outlet
when
opening
cylinder
valve.
7.
Keep protective
cap
in
place
over
valve
except
when
cylinder
is
in
use or
connected
for
use.
8.
Read and
follow
instructions
on
compressed
gas
cylinders,
associated
equipment,
and
CGA
publication
P-i
listed
in
Safety
Standards.
PRINCIPAL SAFETY
STANDARDS
Safety
in
Welding
and
Cutting,
ANSI Standard
Z49.i,
from
American
Welding
Society,
550
NW.
LeJeune
Rd,
Miami
FL
33126
Safetyand
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
Weld
ing Society
Standard AWS
F4.i,
from American
Welding
Society,
550 N.W. LeJeune
Rd, Miami,
FL 33126
National
Electrical
Code,
NFPA
Standard
70,
from National Fire Protection
Association,
Batterymarch
Park,
Quincy,
MA
02269.
Safe
Handling
of
Compressed
Gases
in
Cylinders,
CGA
Pamphlet
P-i,
from
Compressed
Gas
Association,
1235 Jefferson Davis
Highway,
Suite
501,
Arlington,
VA
22202.
Code
for
Safety
in
Welding
and
Cutting,
CSA
Standard Wi
17.2,
from
Canadian Standards
Association,
Standards
Sales,
178
Rexdale
Boulevard,
Rexdale, Ontario,
Canada
M9W
1
R3.
Safe
Practices For
Occupation
And
Educational
Eye
And Face
Protection,
ANSI
Standard Z87.1
,from
American
National
Standards
Institute,
1430
Broadway,
New
York,
NY 10018.
Cutting
And
Welding
Processes,
NFPA
Standard
51
B,
from
National Fire Protection
Association,
Batterymarch
Park,
Quincy,
MA
02269.
EMF
INFORMATION
TABLE
OF CONTENTS
SECTION
1

SAFETY INFORMATION
1
SECTION
2
SPECIFICATIONS
1
2-1.
Volt-Ampere
Curves
2
2-2.
Duty
Cycle
2
SECTION
3INSTALLATION
3
3-1.
Installing
Work
Clamp
3
3-2.
Installing
Gas
Supply
4
3-3.
Gun
Polarity
Connections
5
3-4.
Installing
Drive
Rolls
And
Welding
Gun
5
3-5.
Connecting Input
Power
6
3-6.
Installing
Wire
Spool
And
Adjusting
Hub
Tension
. . .
.
8
3-7.
Threading
And
Feeding Welding
Wire
8
SECTION 4OPERATION
10
SECTION
5-
MAINTENANCE
&
TROUBLESHOOTING
12
5-1.
Routine Maintenance
5-2. Overload Protection
5-3.
Wire
Drive
Assembly
Maintenance
5-4.
Gun Maintenance
5-5.
Troubleshooting
12
13
14
15
16
SECTION
6
ELECTRICAL DIAGRAMS
16
SECTION
7-
PARTS
LIST
Figure
7-1.
Main
Assembly
Figure
7-2.
MWG-200M
Gun
Figure
7-3.
Baffle
w/Cmpts
17
17
18
19
NOTE
~
Considerations About
Welding
And
The
Effects Of
Low
Frequency
Electric And
Magnetic
Fields
The
following
is
a
quotation
from
the
General Conclusions
Section
of
the
U.S.
Congress,
Office
of
Technology
Assessment,
Biological
Effects
of Power
Frequency
Electric
&
Magnetic
Fields

Background
Papei
OTA-BP-E-53
(Washington,
DC:
U.S.
Government
Printing
Office,
May
1989):
... there is
now
a
very
large
volume of
scientific
findings
based
on
experiments
at
the
cellular level and
from
studies
with
animals
and
people
which
clearly
establish that low
frequency
magnetic
fields
can
interact
with,
and
produce
changes
in,
biological
systems.
While
most
of this
work
is
of
very
high
quality,
the results
are
complex.
Current
scientifi
understanding
does
not
yet
allow
us
to
interpret
the
evidence
in
a
single
coherent framework. Even
more
frustrating,
it
does
not
yet
allow
us
to
draw
definite
conclusions
about
questions
of
possible
risk
or
to offer
clear science-based
advice
on
strategies
to
minimize
or
avoid
potential
risks.
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
the
body.
4.
Keep welding
power
source
and
cables
as
far
away
as
practical.
-.
5.
Connect
work
clamp
to
workpiece
as
close to
the
weld
as
possible.
About Pacemakers:
The above
procedures
are
among
those
also
normally
recommended
for
pacemaker
wearers.
Consult
your
doctor for
complete
information.

modlO.1
4/93

SECTION
1
-
SAFETY INFORMATION
Figure
1-1.
Safety
Information
SECTION
2-
SPECIFICATIONS
Table 1-1.
Welding
Power Source
Welding
Gun
Rated
Output
(Air Cooled)
Cable
Length
200
Amperes
At
100%
Duty Cycle Using CO2
Shielding
Gas
(See
Section
2-2)
15
ft
(4.5
m)

Read all
safety
messages
throughout
this manual.
0

Obey
all
safety
messages
to
avoid
injury.
U Learn
the
meaning
of
WARNING
and
CAUTION.
modl.1
2/93
2
\
1
2
!\
______
!ITLTIA
:1~ll~~U
_____________

MOVING
PARTS
can
Injure

Do
not
touch
live
electrical
parts.
~

Keep
away
from
moving
paila.~~
~
ELECTRIC
SHOCK
can
kill

Disconnect
input
power
be~Jj~
4

Keep
all
panels
and
covers
closed
installing
or
servicing.
when
operating.
a
CAUTION
/
5
6.i~I~
4i~4~
READ SAFETY
BLOCKS at
start
of
I
Section
3-1
before
proceeding.
1
Safety
Alert
Symbol
2
SignalWord
WARNING
means
possible
death
or
serious
injury
can
happen.
CAUTION
means
possible
minor
injury
or
equipment
damage
can
happen.
3
Statement Of
Hazard
And
Result
4
Safety
Instructions
To
Avoid
Hazard
5
Hazard
Symbol
(If Available)
6
Safety
Banner
Read
safety
blocks for each
sym
bol shown.
7
NOTE
Special
instructions
for
best
oper
ation

not
related
to
safety.
Turn Off switch when
using
high frequency.
Specifications Description
Type
Of
Output
Rated
Weld
Output
Type
Of
Input
Power
Input
Amperes
Al Rated
Output
Maximum
Input Amperes
While
Idling
KVA/KW
Used At Rated
Output
Maximum
KVNKW
Used
While
Idling
Max.
Open-Circuit
Voltage
Control Circuit
Voltage
At
Gun
Welding
Processes
Calculated
Speed Range
At
No
Load
Wire Diameter
Range
Overall Dimensions
Weight
Direct
Current/Constant
Voltage
(DC/CV)
200
Amperes,
28
Volts
DC,
60%
Duty Cycle
(See
Section
2-2)
Single-Phase;
60
Hz;
At
200,
230,
460,
Or
575
Volts
AC
46AAt200V,
40AAt230
V,
20AAt460
V,
16AAt575V
1.2
A
At 200
V,
1 A
At
230
V,
0.5
A At
460
V,
0.4
A
At
575
V
9.5
kVAJ8.3
kW
0.24
kVA/0.17
kW
42
Volts
DC
24
Volts
DC
Gas
Metal
Arc
(GMAW)
And Flux
Cored
Arc
Welding (FCAW)
128
To
1051
1pm
(3.2
To
266.9
mpm)
.030
To .045
in
(0.8
To 1.1
mm)
Flux
Cored
Wire,
.023
To
.045
in
(0.6
To
1.1
mm)
Hard
Wire
Length:
37
in
(940 mm);
Width:
19
in
(483 mm);
Height:
30-1/4
in
(768
mm)
Net:
225
lb
(102
kg);
Ship:
271
lb
(123
kg)
OM-154
501
Page
1

2-1.
Volt-Ampere
Curves
Figure
2-1.
Volt-Ampere
Curves
2-2.
Duty
Cycle
a
CAUTION
(n
Lu
~
Ui
a
~
.(
~
-I
Lu
~
Minutes
80
300
250
200
160
100
30 40
50 50
Z
DUTY CYCLE
7050
90
100
Figure
2-2.
Duty
Cycle
The
volt-ampere
curves
show
the
50
minimum
and
maximum
voltage
and
amperage
output
capabilities
of
the
welding
power
source.
Curves of other
settings
fall
be
40
tween
the
curves
shown.
Cl)
30
OO20~~~
RANGE
0
I I
I
I
0
25
50
75
100 125
150
175
200 225
DC AMPERES
ssbl.1 10/91
SB-049
424-0
I
~
WELDING
L

Do
not
weld
ONGER
THAN RATED DUTY
CYCLE
can
damage
unit
or
gun
and void
warranty.
at
rated
load
longer
than shown below.
wtwern8.2
8/93
Definition
UNIT
60%
Duty
Cycle
At
200
Amperes
Duty
Cycle
is
percentage
of
10
.minutes..that
unit
or
gun.can
weld
at
rated load without
over
heating.
~~-C3~
6
Minutes
Welding
4 Minutes
Resting
Chart GUN
100%
Duty
Cycle
At
200
Amperes Using
CO2
g.
Continuous
GUN
sbl.38/93SB-150215
30%
Duty
Cycle
At
200
Amperes
Using
Mixed
Gas
OM-154
501
Page
2

ic

SECTION
3-
INSTALLATION
3-1.
Installing
Work
Clamp
1
Work Cable
2
Boot
Slide
boot
onto
work
cable.
Route
cable
out
front
panel opening
from
inside.
3
Negative
()
Output
Terminal
Connect
cable
to
terminal
and
cov~
er
connection
with
boot.
4
Hardware
4
5
Work
Clamp
Route
cable
through
clamp
handle
and
secure
to
top
of
clamp
with
hardware.
Close
door.
5
Tools
Needed:
~==~
1/2,
3/4
in
Figure
3-1.
Installing
Work
Clamp
Ret.
ST-154
630-A
OM-154 501
Page
3

3-2.
Installing
Gas
Supply
a
WARNING
CYLINDERS
can
explode
if
damaged.

Keep cylinders
away
from
welding
and
other
electrical circuits.

Never
touch
cylinder
with
welding
electrode.

Always
secure
cylinder
to
running
gear,
wall,
or
other
stationary
support.
1
Cylinder
Bracket
2
S-Hook
Crimp
between small hole
in
brack
et
and chain.
3
Chain
4
Snap
Crimp
onto
open
end
of chain.
Obtain
gas
cylinder
and
chain
to
running
gear.
5
Cap
6
Cylinder
Valve
Remove
cap,
stand
to
side
of
valve,
and
open
valve
slightly.
Gas
flow
blows
dust
and dirt from
valve.
Close
valve.
7
Cylinder
8
Regulator/Flowmeter
Install
so
face is
vertical.
9
Gas
Hose
Connection
Fitting
has
5/8-18
right-hand
threads.
Obtain
and install
gas
hose.
10
Flow
Adjust
Typical
flow
rate
is
20
cfh
(cubic
feet
per
hour).
Check
wire
man
ufacturers recommended
flow
rate.
Make
sure
flow
adjust
is
closed
when
opening
cylinder
to
avoid
damage
to
the flowmeter.
11
CO2
Adapter
12
0-Ring
Install
adapter
with
0-ring
between
regulator/flowmeter
and
CO2
cylinder.
Tools
Needed:
5/8,1-1/8in
ssb3.2
5/94

ST-i
54
623/ Ref. ST-i
49
627-6
/ Ref.
ST-i
58
697-A

BUILDUP OF SHIELDING GAS
can
harm
health
or
kill.

Shut off
shielding
gas
supply
when
not
in
use.
warn4.i 9/91
Figure
3-2.
Typical Regulator/Flowmeter
Installation
OM-154
501
Page
4

3-3.
Gun
Polarity
Connections
a
WARNING
ELECTRIC SHOCK
can
kill.

Do
not
touch live
electrical
parts.

Turn
Oft
welding
power
source,
and
disconnect
input
power
before
inspecting
or
installing.
Shown As
Shipped

Set
For
Electrode
Positive
(DCEP)
For
Solid
Steel
Or
Aluminum Wires
(GMAW
Process).
Wire
Drive
Assembly
Lead
To Positive
(+) Output
Terminal
swarnl.1
Work
Clamp
Lead
To
Negative ()
Output
Terminal
GUN
POLARITY
CHANGEOVER CONNECTIONS
Reverse Lead
Connections

For
Electrode
Negative
(DCEN)
For
Flux
Cored
Wires
(FCAW
Process).
Drive
Assembly
Becomes
Negative
1
Polarity
Changeover
Label
2
Wire
Drive
Assembly
3
Positive
(+)
Output
Terminal
4
Negative
()
Output
Terminal
Always
read
and follow wire
man
ufacturers
recommended
polarity.
5
Circuit
Breaker
CB1
(see
Section
5-2).
6
Pilot
Light
(see
Section
5-2)
Close
door.
Tools
Needed:
.~ 314,
llIl6in
Ret.
ST.801
102
S-144
449-C
3
Figure
3-3.
Gun
Polarity
Connections
4
3-4.
Installing
Drivefiolls
And
Welding
Gun
1
Pressure
Adjustment
2
Pressure
Assembly
3
Drive Roll
4
Securing
Screw
Install
correct
drive
roll
forwire
size
and
type
using supplied
screws.
5
Wire
Drive
Assembly
6
Gun
Securing
Knob
7
Gun
End
Loosen
securing
knob.
Insert
gun
end
through
opening
until it bot
toms
against
drive
assembly.
Tighten
knob.
8
Gun
Trigger Plug
Insert
into
receptacle,
and
tighten
threaded
collar.
Close
pressure
assembly.
Close
door.
ST-
154
621
/ Ret.
ST-aOl
101
7
Tools
Needed:
6
Figure
3-4.
Gun
Connections
OM-154
501
Pages

3-5.
Connecting Input
Power
a
WARNING
ELECTRIC
SHOCK
can
kill.

Do
not
touch
live
electrical
parts.

Turn
Off
welding
power
source,
and
disconnect
input
power
before
inspecting
or
installing.

Have
only
qualified
persons
install
unit.

Installation
must
meet
National Electrical Code and
all other codes.
A.
Positioning
Jumper
Links
Jumper
links
allow
operation
on
different
input
voltages
and
are
factory
set
for
the
highest
input
voltage.
Check
input
voltage
available
at
site.
1
Input
Voltage
Label

Only
One
Is
On
Unit
Look
at
jumper
links
and
compare
link
position
with
applicable
label.
2
Screw
3
Access Door
To
change
link
position,
remove
screw
and
pivot
door
up.
4
Input
Voltage Jumper
Links
Location
Move
links
to
match
input
voltage.
For
example,
use
200
volts
posi
tion
when 200 volts
input
power
is
available.
Close
door and
secure
with
screw.
Close
side
door.
ssb5.1

2/92 / Ref.
5T-801
099 / Ref.
ST-801
100
Figure
3-5.
Input Voltage
Jumper
Links Location
swarn3.1 2193
200
VOLTS
~OOo~
230
VOLTS
o~J~oo
1
460
VOLTS
~O~Oo~
460
VOLTS
OoO~
S-153
981

575
VOLTS
OoO~1
S-156
140
Tools Needed:
==
c::::::1==in
3/8
in
OM-154
501
Page
6

B.
Connecting Input
Power
Table 3-1. Electrical
Service
Requirements*
Have
only
qualified
persons
make
this
installation.
1
Line
Disconnect Device Of
Proper
Rating
2
230
Volts
AC
Wall
Receptacle
3
Input
Conductors
4
Grounding
Conductor
Select
size
and
length
using
Table
3-1.
Conductor
rating
must
comply
with
national,
state,
and
local electrical codes.
Install and
connect
grounding
conductor and
input
conductors
in
conduit
or
equivalent
between
wall
receptacle
and
deenergized
line
disconnect device.
Connect
grounding
conductor
first,
then
line
input
conductors.
Be
sure
grounding
conductor
goes
to
an
earth
ground.
5
Overcurrent Protection
Select
type
and size
using
Table
3-1.
Install
into
deenergized
line
disconnect device
(fused
dis
connect
switch
shown).
6
Input
Power
Plug
Turn
off
unit Power
switch,
and
connect
plug
to
wall
receptacle.
ssb2.2
12/94

Ref. ST-154 619-B
/ Ref.
ST-149 405-B
Input Voltage
200 230
460
575
Input
Amperes
At Rated
Output
46 40 20
16
Max Recommended
Standard
Fuse
Or Circuit
Breaker
Rating In
Amperes
70
60 30
25
Mm
Input
Conductor
Size
In
AWGIKcmII
8 8
12
14
Max
Recommended
Input
Conductor
Length
In
Feet
(Meters)
89(27)
117
(36)
188
(57) 190(58)
Mm
Grounding
Conductor Size
In
AWG/Kcmil
8 10 12 14
Reference:
1993
National
Electrical
Code
(NEC).
S-oo92J
3
Tools Needed:
Figure
3-6.
Input
Power Connections
OM-154 501
Page
7

c~3:
.s