Electrical Service Guide - Miller Syncrowave 250 DX Manuel De L'utilisateur

3-16. Electrical Service Guide

A. For 250 DX Models
NOTE
NOTE
50/60 Hertz Models
Input Voltage
Input Amperes At Rated Output*
Max Recommended Standard Fuse Or Circuit Breaker
Rating In Amperes
Normal Operating (Fast) Fuse
Min Input Conductor Size In AWG
Max Recommended Input Conductor Length In
Feet (Meters)
Min Grounding Conductor Size In AWG
* Input amperes at rated output is the amperage draw for that particular input voltage if the machine is run at its rated welding
output (see Section 3-3 for rated welding output).
Reference: 2005 National Electrical Code (NEC)
1 If a circuit breaker is used in place of a fuse, choose a circuit breaker with time-current curves comparable to the recommended fuse.
2 "Time-Delay" fuses are UL class "RK5" .
3 "Normal Operating" (fast) fuses are UL class "K5" (up to and including 60 amp), and UL class "H" ( 65 amp and above).
4 Conductor data in this section specifies conductor size (excluding flexible cord or cable) between the panelboard and the equipment per NEC Table
310.16. If a flexible cord or cable is used, minimum conductor size may increase. See NEC Table 400.5(A) for flexible cord and cable requirements.
Y Failure to follow these fuse and circuit breaker recommendations could create an electric shock or fire hazard.
50/60 Hertz Models
Input Voltage
Input Amperes At Rated Output*
Max Recommended Standard Fuse Or Circuit Breaker
Rating In Amperes
Normal Operating (Fast) Fuse
Min Input Conductor Size In AWG
Max Recommended Input Conductor Length In
Feet (Meters)
Min Grounding Conductor Size In AWG
* Input amperes at rated output is the amperage draw for that particular input voltage if the machine is run at its rated welding
output (see Section 3-3 for rated welding output).
Reference: 2005 National Electrical Code (NEC)
1 If a circuit breaker is used in place of a fuse, choose a circuit breaker with time-current curves comparable to the recommended fuse.
2 "Time-Delay" fuses are UL class "RK5" .
3 "Normal Operating" (fast) fuses are UL class "K5" (up to and including 60 amp), and UL class "H" ( 65 amp and above).
4 Conductor data in this section specifies conductor size (excluding flexible cord or cable) between the panelboard and the equipment per NEC Table
310.16. If a flexible cord or cable is used, minimum conductor size may increase. See NEC Table 400.5(A) for flexible cord and cable requirements.
Y Failure to follow these fuse and circuit breaker recommendations could create an electric shock or fire hazard.
All values in both tables were calculated at 60% duty cycle.
Actual input voltage cannot exceed ± 10% of indicated required input voltage
shown in both tables. If actual input voltage is outside of this range, damage to unit
may occur.
200
88
1
Circuit Breaker
2
Time-Delay Fuse 125
3
125
4
4
167
(51)
4
6
200
60
1
Circuit Breaker
2
Time-Delay Fuse 90
3
90
4
8
87 (26)
4
8
Without Power Factor Correction
220 230 400 440
82 77 45 41
125 125 70 60
125 125 70 60
6 6 8 8
137 153 305 369
(42) (47) (93) (112)
6 6 8 10
With Power Factor Correction
220 230 400 440
61 52 34 31
90 80 50 45
90 80 50 45
8 8 10 10
102 115 226 274
(31) (35) (69) (84)
8 8 10 10
460 520 575
38 35 31
60 50 45
60 50 45
10 10 10
281 352 439
(86) (107) (134)
10 10 10
460 520 575
26 26 21
40 40 30
40 40 30
10 10 12
308 383 295
(94) (117) (90)
10 10 12
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