Specifications

SECTION 3 Installation
ESP-600C Plasma Power Source -
3-3
3.4.1 Primary Power
ESP-600C 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:
Rated Load
Volts Amperes
Input and
Ground
conductor*
CU/AWG
Time delay
Fuse size
(amperes)
400
460
575
206
179
143
4/0
3/0
1/0
250
250**
200
*Sizes per National Electrical Code for a 90 °C rated
copper conductors @ 40 °C 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.
NOTICE
Dedicated power line may be necessary.
ESP-600C is equipped with line voltage
compensation but to avoid impaired performance
due to an overloaded circuit, a dedicated power
line may be required.