Input
Voltage / Hz.
230/60
460/60
220/50/60
380/50/60
440/50/60
3 Input Wires
#3 (25mm
2
)
#8 (10mm
2
)
#3 (25mm
2
)
#6 (16mm
2
)
#8 (10mm
2
)
1 Grounding Wire
#8 (10mm
2
)
#8 (10mm
2
)
#8 (10mm
2
)
#8 (10mm
2
)
#8 (10mm
2
)
ELECTRICAL INPUT CONNECTION
Before starting the installation, check with the local
power company if there is any question about whether
your power supply is adequate for the voltage,
amperes, phase and frequency specified on the rear
machine nameplate. Also be sure the planned installa-
tion will meet the U.S. National Electrical Code and
local code requirements.
Use a three phase power supply fused with the rec-
ommended super lag fuses. Choose an input and
grounding wire size according to local codes or use
the table below. “Delay type” circuit breakers (also
called “inverse time” or “thermal/magnetic”; which
have a delay in tripping action that decreases as the
magnitude of the current increases) may be used in
place of fuses. Using fuses or circuit breakers smaller
than recommended may result in “nuisance” tripping
from machine inrush currents even if not cutting or
gouging at high currents.
Models that have multiple input voltages specified on
the rear nameplate (e.g. 230/460) are shipped con-
nected for the higher voltage. If the machine is to be
operated on the lower voltage, it must be reconnected
according to the instructions on the inside of the
removable panel in the center of the rear panel.
Electrical supply lines enter the machine next to the
removable panel.
– 10 –
Have a qualified electrician connect the input leads to
“U”, “V” and “W” of the reconnect panel in accordance
with the U.S. National Electrical Code, all local codes
and the connection diagram located on the inside of
the cover.
The frame of the machine must be grounded. A
ground terminal marked with the symbol located at
the left side of the input box is provided for this pur-
pose. See the U.S. National Electrical Code for details
on proper grounding methods. Follow other grounding
instructions per the paragraph under “High Frequency
Interference Protection”.
On triple voltage input machines, be sure the recon-
nect panel is connected per Figure 1 in the back of
this manual, for the voltage being supplied to the
machine.
• Failure to follow these instructions can cause imme-
diate failure of machine components.
------------------------------------------------------------------------
The PRO-CUT is shipped connected for the highest
nameplate input voltage. Reconnect the power straps
to their respective terminals corresponding to the input
voltage used.
ELECTRIC SHOCK
can kill.
• Disconnect input power before
proceeding.
• Have a qualified electrician make
the input connections.
• Be sure the voltage, phase and frequency
of the input power is as specified on the
machine nameplate.
------------------------------------------------------------
WARNING
ELECTRIC SHOCK
can kill.
• Make certain that the input power
is electrically disconnected before
removing the screws that hold the
removable rear panel in place.
------------------------------------------------------------
WARNING
CAUTION
RECOMMENDED WIRE SIZE FOR PRO-CUT INPUT CONNECTIONS
Based on 1993 U.S. National Electric Code
125Amp
60Amp
125Amp
70Amp
60Amp
Wire Size
(Copper, 75°C)
Fuse Size
