Using Multiple Units: Two Or More Ac Arcs - Miller Electric Summit Arc 1000/1250 Owner's Manual

4-3. Using Multiple Units: Two or More AC Arcs

First Unit
Connections
To AC Output
Electrode #1
Second Unit (And
Following Units)
Connections
To Work
Shielded Cable To
Terminal Strip TE4
!
!
To AC Output
!
Electrode #2
Do not touch live electrical parts.
Turn off welding power sources and
disconnect input power before
making any weld output connec-
tions.
See ANSI Z49.1 and OSHA Title
29, Chapter XVII, Part 1910, Sub-
part Q (addresses at beginning of
manual).
Do not handle or come in contact
with two live electrodes at the same
time.
!
Work cable or electrode cable must
To Next AC Unit
be able to carry the weld output of
the individual welding power source
(see Section 3-10).
Do not exceed duty cycle of welding
power sources.
To Work
!
To use two or more AC arcs with
separate electrodes, make con-
nections as shown.
Set up AC output units according to
Section 4-4.
Turn Off welding power
source and disconnect input
power before opening ac-
cess door.
High weld output current
hazard! Remove all metal
jewelry, such as rings and
watches, and be careful with
tools near output terminals.
High current can cause se-
vere burns from hot metal if
touched to output terminals
and unit is On. ALWAYS turn
Off welding power sources
and disconnect input power
BEFORE making weld out-
put connections.
ELectric Shock can kill.
Undersized weld cables can
cause fire.
If there are any questions re-
garding this procedure, con-
tact the factory before con-
necting units.
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