Primary (Input) Electrical Connection - ESAB 653 cvcc Instruction Manual

SECTION 3
3.3

PRIMARY (INPUT) ELECTRICAL CONNECTION

This power source is a three-phase unit and must be connected to a three-phase power supply. It is recommended that the
unit be operated on a dedicated circuit to prevent impairment of performance due to an overloaded circuit.
WARNING
A. The primary power leads must be insulated copper conductors. Three power leads and one ground wire are required.
Either rubber covered cable or conduit (flexible or solid) may be used. Table 3-1 provides recommended input conduc-
tors and line fuse sizes.
B. Remove the top cover. Identify primary power connections, TB3, and the ground lug located on the A-Frame bracket.
Refer to figure 3.1.
* Sized per National Code for 80 °C rated copper conductors @ 30° C ambient. Not more than three conductors in raceway or cable. Local
codes should be followed if they specify sizes other than those listed
ELECTRIC SHOCK CAN KILL! BEFORE MAKING ELECTRICAL INPUT
CONNECTIONS TO THE POWER SOURCE, "MACHINERY LOCKOUT
PROCEDURES" SHOULD BE EMPLOYED. IF THE CONNECTIONS ARE
TO BE MADE FROM A LINE DISCONNECT SWITCH, PLACE THE SWITCH
IN THE OFF POSITION AND PADLOCK IT TO PREVENT INADVERTENT
TRIPPING . IF THE CONNECTION IS MADE FROM A FUSEBOX, REMOVE
THE CORRESPONDING FUSES AND PADLOCK THE BOX COVER. IF IT IS
NOT POSSIBLE TO USE PADLOCKS, ATTACH A RED TAG TO THE LINE
DISCONNECT SWITCH OR FUSE BOX WARNING OTHERS THAT THE
CIRCUIT IS BEING WORKED ON.
Table 3-1. Recommended Sizes for Input
Conductors and Line Fuses
Rated Input
@ 100% Duty Cycle
Volts Amps
220 68
230 66
400 37
460 33
575 26
Input & GND
Conductor *
CU / AWG
No. 6
No. 6
No. 8
No. 8
No. 10
22
INSTALLATION
Fuse
Size
Amps
100
100
60
60
50