INSTALLATION
WARNING
3 Phase Welders at 100% Duty Cycle
FALLING
EQUIPMENT can cause injury.
•Do not lift this machine using lift bale if it is equipped with a heavy accessory such as a trailer or gas cylinder.
•Lift only with equipment of adequate lifting capacity.
•Be sure machine is stable when lifting.
NOTE: The standard machines are designed to operate on 460
OUTPUT CONNECTION (Turn Power Source Off)
LOCATION
Install the welder in a dry location where there is free cir- culation of air in through the louvers in the front and out through the louvers in the back of the case. A location which minimizes the amount of smoke and dirt drawn into the machine reduces the chance of dirt accumulation that can block air passages and cause overheating.
INPUT WIRING
WARNING
a.Output Studs
The “Positive” and “Negative” output studs are located on the front panel. Two of each are provided to simplify connecting multiple electrode or work cables as sug- gested in the table below.
Connect the electrode cables to the “Positive” studs for electrode positive (DC+) polarity or to the “Negative” stud for electrode negative
Suggested Copper Cable Sizes — 80% Duty Cycle
ELECTRIC SHOCK
can kill.
•Have an electrician install and service this equipment.
•Turn the input power off at the fuse box before working on equipment.
•Do not touch electrically hot parts.
Below 1000 amps | Two 4/0 | Up to | |
1000 to 1200 amps | Three 4/0 | ||
200’ | |||
1200 to 1500 amps | Four 4/0 | ||
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b. Auxiliary Power |
This machine supplies the 1000 |
Failure to fuse the input lines per the specifications in this manual will constitute customer abuse and void the war- ranty.
Be sure the voltage, phase and frequency of the input power is as specified on the welder nameplate.
Have a qualified electrician remove the lower right side case panel and connect 3 phase AC power to terminals L1, L2 and L3 of the input contactor in accordance with the Na- tional Electrical Code, all local codes and the wiring diagram located inside the machine.
The frame of the welder must be grounded. A stud marked
with the symbol 
located on the fan shroud is provided for this purpose. See the U.S. National Electrical Code for details on proper grounding methods.
Recommended Input Wire, Grounding Wire and Fuse Sizes
Based on National Electrical Code For 60 Hertz,
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| Copper Wire Size |
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| Type 75° In Conduit |
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Input | Amps | 3 Input | Grounding | Super Lag Fuse |
Volts | Input | Wires | Conductor | Size in Amps |
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460 | 184 | 000 | 3 | 300 |
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volt, AC power needed for the automatic wire feeders. |
The power is available from terminals #31 and #32 on |
the terminal strip. |
c. “NL Option” (K783) |
Installation of an NL option is required when connect- |
ing a |
feeding systems. See the section on page 9 entitled “NL |
Option Kit” for full information. |
d. Wire Feeder Connection — Without NL Option |
Turn the welder off. Remove the screw and lift the |
hinged door on the front of the control panel to expose |
the terminal strips. Connect the leads of the wire feeder |
input control cable to the terminal strip exactly as spec- |
ified in the appropriate connection diagram included in |
the wire feeder Operating Manual. Attach the control |
cable to the panel at the right of the terminal strip using |
the clamp attached to the control cable. Close the door |
and replace the screw. |
To connect the |
available connection diagrams, write to the factory for |
instructions giving complete nameplate information for |
the |