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SELECTING
THE CORRECT
WELDING
CURRENT
Measure the thickness
of the metal you are welding and then refer to the
table below to select the proper electrode size and current setting.
PLATE THICKNESS
ELECTRODE
DIAMETER
CURRENT
IN INCHES
IN INCHES
SETTING
UPTO
3/16
l/16
50-
100
UPTO
l/4
3132
100-150
ABOVE
II8
1 I8
125-175
ABOVE
II4
5132
150-200
NOTE:
Always
make
a sample
weld
on a piece
of scrap
material
to be sure
you have chosen the correct electrode and current setting.
WELDING
CABLE SELECTION
The table below shows the current carrying capacity of various lengths and
gauges of standard copper welding cable. Whenever possible, refer to the
cable manufacturer's
recommendations.
Always allow a considerable
safety margin when selecting welding cables.
The cable's length and gauge (diameter), along with the'material
it is made
from, all combine to determine how much current it can safely carry.
CAUTION:
An
undersize
welding
cable
will
offer
unacceptably
high
resistance
to current
flow.
This high resistance
will shorten
the service
life
of the generator/welder,
and can even make the welding
cables
become
hot enough
to cause painful
burns.
LENGTH
IN FEET*
I
I
CABLE
CABLE
GAUGE
DIA.
O-50
FT.
50-100
FT.
100-250
FT.
CURRENT,
CAPACITY
AMPERES
1
.644
250
200
170
2
.604
200
195
NOTE:
The cable lengths
given in the table above
are the combined
lengths
of the
negative
and positive
cables.
23
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