Miller Electric 280 NT - Manual (Page 26)

OM-4402 Page 22
SECTION 6 − OPERATING AUXILIARY EQUIPMENT
6-1. Auxiliary Power Receptacles And Circuit Breakers
Ref. 203 073
Y If unit does not have GFCI re-
ceptacles, use GFCI-
protected extension cord.
.
Auxiliary power decreases as
weld current increases.
1 240 V 50 A AC Receptacle
RC1
RC1 supplies 60 Hz single-phase
power at weld/power speed. Maxi-
mum output is 8 kVA/kW.
2
120 V 20 A AC Duplex
Receptacle RC2
3 120 V 20 A AC Duplex
Receptacle RC3
RC2 and RC3 supply 60 Hz single-
phase power at weld/power speed.
Maximum output from RC2 or RC3 is
2.4 kVA/kW.
4
Circuit Breaker CB1
CB1 protects all the receptacles from
overload. If CB1 opens, the recep-
tacles do not work.
.
Place switch in On position to re-
set circuit breaker. If breaker
continues to open, contact Fac-
tory Authorized Service Agent.
5 Circuit Breaker CB3
6 Circuit Breaker CB4
CB3 protects RC2 and CB4 protects
RC3 from overload. If a circuit break-
er opens, the receptacle does not
work.
.
Press button to reset circuit
breaker. If breaker continues to
open, contact Factory
Authorized Service Agent.
Combined output of all receptacles
limited to 8 kVA/kW rating of the gen-
erator.
EXAMPLE: If 20 A is drawn from
each 120 V duplex receptacle, only
13 A is available at the 240 V
receptacle:
2 x (120 V x 20 A) + (240 V x 13 A) =
8 kVA/kW
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
2
5
3
6
4