Miller Electric 251 NT manual Operating Auxiliary Equipment, Weld Current 120 240

Models: 251 NT

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SECTION 6 – OPERATING AUXILIARY EQUIPMENT

6-1. Auxiliary Power Receptacles And Circuit Breakers

4

1

5

23

Simultaneous Welding And Auxiliary Power

Output

Weld Current

 

120 V

240 V

 

Watts

Receptacle

Receptacle

 

Amperes

 

 

Amperes

Amperes

 

 

 

 

 

 

 

 

 

250

3500

31

15.5

 

225

4260

39

19

 

200

5140

46

23

 

150

6700

60

30

 

100

8000

62.4

31.2

 

50

8000

62.4

31.2

 

0

8000

62.4

31.2

 

 

 

 

 

 

YIf unit does not have GFCI re-

ceptacles, use GFCI- protected extension cord.

.Auxiliary power decreases as weld current increases.

6

1240 V 50 A AC Receptacle RC1

RC1 supplies 60 Hz single-phase power at weld/power speed. Maxi- mum output is 8 kVA/kW.

2120 V 20 A AC Duplex Receptacle RC2

3120 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 Breakers CB1 and CB2

CB1 and CB2 protect RC1 from over- load. If CB1 or CB2 opens, RC1 and one of the 120 volt receptacles does not work. 120 volts may still be pres- ent at RC1.

5Circuit Breaker CB3

6Circuit 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

Ref. ST-189 925-A

OM-486 Page 20

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Miller Electric 251 NT manual Operating Auxiliary Equipment, Auxiliary Power Receptacles And Circuit Breakers