Lincoln Electric IM790 SP-175 Plus - Manual (Page 13)

A-6
A-6 INSTALLATION
Line Cord Connection
A 3 conductor line cord with a 50 amp, 250 volt, three-
prong plug (NEMA Type 6-50P) is factory installed.
Connect this plug to a mating grounded receptacle
which is connected to an appropriate power supply
per the U.S. National Electric Code and any applicable
local codes.
CONNECT TO A SYSTEM
GROUNDING WIRE. SEE
THE UNITED STATES
NATIONAL ELECTRICAL
CODE AND/OR LOCAL
CODES FOR OTHER
DETAILS AND MEANS FOR
PROPER GROUNDING.
CONNECT TO HOT WIRES
OF A THREE-WIRE SINGLE
PHASE SYSTEM OR TO
ONE PHASE OF A TWO OR
THREE PHASE SYSTEM.
This welding machine must be connected to a
power source in accordance with applicable elec-
trical codes.
The National Electrical Code provides standards
for amperage handling capability of supply con-
ductors based on duty cycle of the welding
source.
If there is any question about the installation
meeting applicable electrical code requirements,
consult a qualified electrician.
ELECTRICAL INPUT CONNECTION FOR
RATED OUTPUT
ELECTRIC SHOCK can kill.
• Disconnect input power by removing
plug from receptacle before working
inside SP-175 Plus.
• Use only grounded receptacle.
• Do not touch electrically “ hot ” parts
inside SP-175 Plus.
• Have qualified personnel do the main-
tenance and troubleshooting work.
230 Volt Input Connection
The SP-175 Plus is shipped from the factory connect-
ed for 230 volt input power. If the welder has been
reconnected for 208 volt input power and 230 volt
input is desired, perform the following reconnection
instructions:
1. Disconnect welder from input power and remove
case side panel.
2. Remove lead marked “ H3 ” from H1 terminal on the
control P.C. Board.
3. Remove tape securing H1 lead to lead sleeving
and connect H1 lead to H1 terminal on the board.
4. Insulate unused H3 lead for 300 volts with electri-
cal tape and secure to lead sleeving.
5. Reinstall case side before connecting input power.
208 Volt Input Connection
1. Disconnect welder from input power and remove
case side.
2. Remove lead marked “ H1 ” from H1 terminal on the
control P.C. Board.
3. Remove tape securing H3 lead to lead sleeving
and connect H3 lead to H1 terminal on the board.
4. Insulate unused H1 lead for 300V with electrical
tape and secure to lead sleeving.
5. Reinstall case side before connecting input power.
WARNING
Grounding
Type 75 ° C Wire Fuse
Wire in Conduit, Copper Size
Input Copper Cond. Cond. (Super
Voltage Hertz AWG Size AWG Size Lag)
208/230 60 8 10 40
WARNING
SP-175 PLUS