Miller Electric 280 NT - Manual (Page 27)

OM-4402 Page 23
6-2. Optional Auxiliary Power Receptacles
Y If unit does not have GFCI re-
ceptacles, use GFCI-
protected extension cord.
.
Auxiliary power decreases as
weld current increases.
Combined output of all receptacles
limited to 8 kVA/kW rating of the
generator.
GFCI Receptacle Option
1
120 V 15 A AC GFCI Recep-
tacles GFCI2 and GFCI3
GFCI2 and GFCI3 supply 60 Hz
single-phase power at weld/power
speed. Maximum output from
GFCI2 or GFCI3 is 2.4 kVA/kW. Cir-
cuit 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 equipment. Check for
damaged tools, cords, plugs, etc.
connected to the receptacle. Press
button to reset receptacle and
resume operation.
.
At least once a month, run
engine at weld/power speed
and press Test button to verify
GFCI is working properly.
Ref. 203 073
Weld Current
In Amperes
300
250
200
150
100
0
1600
3500
5140
6700
8000
8000
14
31
46
60
66
66
7
15
23
30
33
33
Simultaneous Welding And Auxiliary Power Output
240 V
Receptacle
Amperes
120 V
Receptacle
Amperes
Total
Power In
Watts
1
6-3. Wiring Optional 240 Volt Plug
ST-120 813-D
The plug can be wired for a 240 V,
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
Load
3 Neutral (Silver) Terminal
4 Load 1 (Brass)Terminal
5 Load 2 (Brass) Terminal
6 Ground (Green) Terminal
7 Amperes Available using
120/240 V Plug
1
2
3
4
5 6
3
4
5
6
240V
240V
120V
120V
7
Tools Needed:
*One 240 V load or two 120 V loads.
Current Available in Amperes
240 V
Receptacle*
Each 120 V Duplex
Receptacle
V x A = Watts
20
15
10
5
0
0
5
10
15
20