Miller Dialarc 250P AC/DC Mode D'emploi page 22

3-12. Connecting Input Power
Tools Needed:
3/8, 7/16, 1/2 in.
!
Installation must meet all National and
Local Codes − have only qualified per-
sons make this installation.
!
Disconnect and lockout/tagout input
power before connecting input con-
ductors from unit.
!
Make input power connections to the
welding power source first.
!
Always connect green or green/yellow
conductor to supply grounding termi-
nal first, and never to a line terminal.
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
Section 3-10. Conductors must comply with
national, state, and local electrical codes. If
applicable, use lugs of proper amperage
OM-321 Page 18
8
4
5
L2
L1
4
3
capacity and correct hole size.
Welding Power Source Input Power Con-
nections
2 Strain Relief
Route conductors (cord) through strain relief
and tighten screws.
3 Machine Grounding Terminal
4 Green Or Green/Yellow Grounding
Conductor
Connect green or green/yellow grounding
conductor to welding power source grounding
terminal first.
5 Welding Power Source Line Terminals
6 Input Conductors L1 And L2
Connect input conductors L1 and L2 to weld-
ing power source line terminals.
Install side panel on welding power source.
1
=GND/PE Earth Ground
10
7
9
L1
6
L2
1
2
6
Disconnect Device Input Power Connec-
tions
7 Disconnect Device (switch shown in
OFF position)
8 Disconnect Device (Supply) Grounding
Terminal
Connect green or green/yellow grounding
conductor to disconnect device grounding ter-
minal first.
9 Disconnect Device Line Terminals
Connect input conductors L1 And L2 to
disconnect device line terminals.
10 Over-Current Protection
Select type and size of over-current protection
using Section 3-10 (fused disconnect switch
shown).
Close and secure door on line disconnect de-
vice. Remove lockout/tagout device, and
place switch in the On position.
input_3 3/96 - 802 940