ESAB 0558011310, Instruction Manual

Page: 28 / 70

installation
28
input power connection
electric shocK can Kill!
proViDe maximum protection against electrical shocK.
Before anY connections are maDe insiDe the machine, open
the line Wall Disconnect sWitch to turn poWer off.
Warning
primary power
Three-phase input power must be provided from a line (wall) disconnect switch that contains fuses or circuit
breakers in accordance to local or state regulations.
Dedicated power line may be necessary.
plasma unit is equipped with line voltage compensation but to
avoid impaired performance due to an overloaded circuit, a dedi-
cated power line may be required.
notice
Input current =
(V arc) x (I arc) x 0.73
(V line)
Recommended input conductor and line fuse sizes:
Sizes per National Electrical Code for a 90° C (194˚ F) rated copper conductors @ 40° C (104˚ F) ambient. Not
more than three conductors in raceway or cable. Local codes should be followed if they specify sizes other
than those listed above.
To estimate the input current for a wide range of output conditions, use the formula below.
Rated load is output of 200A at 160V
input requirements
at rated load
input &
ground
copper con-
ductors
time
Delay
line fuse
Volts amperes aWg / mm2 amperes
200 115 2/0 AWG 150
230 96 1 AWG 125
380 CCC 60 25mm2 80
400 CE 57 25mm2 75
460 50 4 AWG 70
575 43 4 AWG 60