Optional Gfci Receptacles And Circuit Breakers; Wiring Instructions For Optional 240 Volt, Single-Phase Plug (Nema 14-50P) - Miller PipePro 304 Owner's Manual

7-2. Optional GFCI Receptacles And Circuit Breakers

7-3. Wiring Instructions For Optional 240 Volt, Single-Phase Plug (NEMA 14-50P)

1 2
3
4
120V
120V
240V
3
4
240V
6
Tools Needed:
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Y If unit does not have GFCI
receptacles, use GFCI-pro-
tected extension cord.
.
Generator power decreases as
weld current increases.
1 120 V 20 A AC GFCI Duplex
Receptacle GFCI-2
2 120 V 20 A AC GFCI Duplex
Receptacle GFCI-3
GFCI-2 and GFCI-3 supply 60 Hz
single-phase power at weld/power
speed. Maximum
GFCI-2 or GFCI-3 is 2.4 kVA/kW.
Circuit breaker protection is the
same as standard receptacles.
If a ground fault is detected, the GFCI
Reset button pops out and the circuit
opens to disconnect the faulty equip-
ment. Check for damaged tools,
cords, plugs, etc. connected to the
receptacle. Press button to reset re-
ceptacle and resume operation.
.
At least once a month, run en-
gine at weld/power speed and
press Test button to verify GFCI
is working properly.
The plug can be wired for a 240 V,
1
2-wire load or a 120/240V, 3-wire
load. See circuit diagram.
1 Plug Wired for 120/240 V,
3-Wire Load
When wired for 120 V loads, each
duplex receptacle shares a load
with one half of 240 V receptacle.
2 Plug Wired for 240 V, 2-Wire
5
Load
3 Neutral (Silver) Terminal
6
4 Load 1 (Brass)Terminal
2
5 Load 2 (Brass) Terminal
6 Ground (Green) Terminal
Strip cord jacket back enough to
separate conductors.
Strip conductors enough to make
good contact with plug terminals.
Make plug connections and rein-
stall outer shell and cord grip.
Tighten assembly screws onto
shell. Do not overtighten.
5
Plug1 7/99 − ST-120 813-D
output from
Ref. ST-207 554-A
OM-492 Page 25