Connecting Input Power - Miller Electric STR 450 CE Owner's Manual

3-12. Connecting Input Power

OM-236 031 Page 14
2
3
GND/PE
Connect First
!
Installation must meet all Na-
tional and Local Codes −
have only qualified persons
make this installation.
!
Disconnect and lockout/tag-
out input power before con-
necting input conductors
from unit.
!
Always connect green or
green/yellow conductor to
supply grounding terminal
GND/PE
first, and never to a line ter-
minal.
1
!
Make input power connec-
tions to the welding power
source first.
4
!
Special installation may be
required where gasoline or
volatile liquids are present −
see NEC Article 511 or CEC
L1 (U)
Section 20.
L2 (V)
See rating label on unit and check
L3 (W)
input voltage available at site.
1 Disconnect Device (switch
shown in OFF position)
2 Disconnect Device (Supply)
Grounding Terminal
Connect green or green/yellow
grounding conductor to disconnect
device grounding terminal first.
3 Disconnect Device Line
Terminals
Connect input conductors L1 (U),
L2 (V) And L3 (W) to disconnect
device line terminals.
4 Overcurrent Protection
Select type and size of overcurrent
protection using Section 3-11
(fused disconnect switch shown).
Close and secure door on line dis-
connect device. Remove lockout/
tagout device, and place switch in
the On position.
805 089 / 801 721