User Guide

A-8
INSTALLATION
STT-10
A-8
ELECTRICAL INSTALLATION
Input Cable: STT-10 Control to Power
Source
Available Cable Assemblies:
K1758 Consists of an 8-conductor control cable with
a 14-pin plug, a 6-conductor control cable with a 10-
pin plug, and an electrode cable with Twist-Mate™
connector. It is rated at 300 amps, 60% duty cycle and
is available in lengths of 10 ft.(3 m), 25 ft.(7.6 m), and
50 ft.(15 m).
With input power disconnected from the power
source, install the input cable per the following:
1) Connect the end of the control cable with the 14-
pin cable plug to the mating receptacle on the
power source. Connect the 10-pin cable plug to
the mating receptacle on the power source.
2) Connect the electrode lead to the power source
output terminal of the desired polarity.
3) Connect the 8-socket plug of the control cable to
the mating receptacle on the bottom of the STT-10
control box. Connect the 6-rocket plug of the con-
trol cable to the mating receptacle on the bottom of
the STT-10 control box.
4) Slip the current sensor cover off enough to expose
the input connector stud. Connect the electrode
cable from the power source to this stud with the
nut provided, then reclose the current sensor
cover.
Work Cable
Connect a work lead of sufficient size and length (per
the following table) between the proper output termi-
nal on the power source and the work. Be sure the
connection to the work makes tight metal-to-metal
electrical contact.
Observe all additional Safety Guidelines detailed throughout this manual.
ELECTRIC SHOCK can kill.
• Do not touch electrically live parts such
as output terminals or internal wiring.
• When inching with gun trigger, electrode and
drive mechanism are “hot” to work and
ground and could remain energized several
seconds after the gun trigger is released.
• Turn OFF input power at welding power
source before installation or changing
drive roll and/or guide tubes.
• Welding power source must be connected
to system ground per the National
Electrical Code or any applicable local
codes.
• Only qualified personnel should
perform this installation.
WARNING
Copper Work Cable Size, AWG
Up to 100 ft Length (30m)
Current
60% Duty
Cycle
400 Amps
500 Amps
#00 (67mm
2
)
#000 (85mm
2
)