ESAB Precision Plasmarc EPP-600, Instruction Manual, Page: 20 / 90

20
sectIon 3 InstallatIon
3.4 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
3.4.1 primary power
EPP-600 is a 3-phase unit. Input power must be provided from a line (wall) disconnect switch that contains fuses
or circuit breakers in accordance to local or state regulations.
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.
** During heavy duty cutting at 600A, input current can momentarily rise above 200A and cause nuisance blowing of
200A fuses. When cutting currents are below 500A, 200A fuses are sufficient.
To estimate the input current for a wide range of output conditions, use the formula below.
Dedicated power line may be necessary.
epp-600 is equipped with line voltage compensation but to avoid
impaired performance due to an overloaded circuit, a dedicated
power line may be required.
notIce
Input at rated load Input and ground
conductor* cu/
mm
2
(aWg)
time delay
fuse size
(amperes)
Volts amperes
400 206 95 (4/0) 250
460 179 95 (3/0) 250**
575 143 50 (1/0) 200
Rated load is output of 600A at 200V
Input current =
(V arc) x (I arc) x 0.688
(V line)