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3-14. Connecting Input Power To Rack (Continued)
!
Installation must meet all National
and Local Codes − have only qualified
persons make this installation.
!
Disconnect and lockout/tagout input
power before connecting input con-
ductors from unit. Follow established
procedures regarding the installation
and
removal
of
lockout/tagout
devices.
!
Make input power connections to the
welding power source first.
!
Always connect green or green/yel-
low conductor to supply grounding
terminal first, and never to a line ter-
minal.
See rating label on unit and check input volt-
age available at site.
1
Input Power Conductors (Customer
Supplied Cord)
Select size and length of conductors using
Sections 3-11 thru 3-13. Conductors must
comply with national, state, and local electri-
cal codes. If applicable, use lugs of proper
amperage capacity and correct hole size.
Notes
Control Box Input Power Connections
2
Control Box
Open access door.
3
Strain Relief
Route conductors (cord) through strain relief
and tighten screws.
4
Control Box Grounding Terminal
5
Green Or Green/Yellow Grounding
Conductor
Connect green or green/yellow grounding
conductor to control box grounding terminal
first.
6
Input Terminal Block
7
Control Box Line Terminals
8
Input Conductors L1 (U), L2 (V) And L3
(W)
Connect input conductors L1 (U), L2 (V) and
L3 (W) to control box line terminals.
Close and secure access door on control
box.
Disconnect Device Input Power Connec-
tions
9
Disconnect Device (switch shown in
OFF position)
10 Disconnect Device (Supply) Grounding
Terminal
11 Disconnect Device Line Terminals
Connect green or green/yellow grounding
conductor to disconnect device grounding
terminal first.
Connect input conductors L1 (U), L2 (V) And
L3 (W) to disconnect device line terminals.
12 Over-Current Protection
Select type and size of over-current protec-
tion using Sections 3-11 thru 3-13 (fused dis-
connect switch shown).
Close and secure door on line disconnect de-
vice. Follow established lockout/tagout pro-
cedures to put unit in service.
Work like a Pro!
Pros weld and cut
safely. Read the
safety rules at
the beginning
of this manual.
OM-2238 Page 21
input3 2012−05
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