Lincoln Electric FLEXTEC 450 CE - Manual (Page 11)

A-4 INSTALLATION A-4
INPUT FUSE AND SUPPLY WIRE
CONSIDERATIONS
Refer to Specification in this Installation Section for
recommended fuse, wire sizes and type of the copper
wires. Fuse the input circuit with the recommended
super lag fuse or delay type breakers (also called
"inverse time" or "thermal/magnetic" circuit breakers).
Choose input and grounding wire size according to
local or national electrical codes. Using input wire
sizes, fuses or circuit breakers smaller than recom-
mended may result in "nuisance" shut-offs from
welder inrush currents, even if the machine is not
being used at high currents.
ELECTRIC SHOCK can kill.
ONLY A QUALIFIED ELECTRICIAN
SHOULD CONNECT THE INPUT
LEADS TO THE FLEXTEC™ 450 CE.
CONNECTIONS SHOULD BE MADE IN ACCOR-
DANCE WITH ALL LOCAL AND NATIONAL
ELECTRICAL CODES AND THE CONNECTION
DIAGRAM LOCATED ON THE INSIDE OF THE
RECONNECT/INPUT ACCESS DOOR OF THE
MACHINE. FAILURE TO DO SO MAY RESULT
IN BODILY INJURY OR DEATH.
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WARNING
INPUT CONNECTION
(See Figure A.1)
Use a three-phase supply line. A 1.40 inch (36 mm)
diameter access hole for the input supply is located on
the case back. Connect L1, L2, L3 and ground
according to the Input Supply Connection Diagram
decal located on the internal horizontal panel.
To access the reconnect/input supply connection
blocks, remove the 8 screws that secure the case top
of the welder and remove the case top.
FLEXTEC™ 450 CE
POWER SUPPLY TERMINAL BLOCK
• Line Cord/Cable attaches here.
• A ground terminal marked with the symbol shown
is provided separate from this block for connecting the ground
lead of the line cord. (See your local and national electrical
codes for proper grounding methods.)
POWER SUPPLY ACCESS HOLE
• Route input power cable through this hole.
FIGURE A-1