OM-235 825 Page 17
4-9. Electrical Service Guide For 230 VAC
Failure to follow these electrical service guide recommendations could create an electric shock or fire hazard. These recommenda-
tions are for a dedicated branch circuit sized for the rated output and duty cycle of the welding power source.
.
Actual input voltage should not exceed
±
10% of indicated required input voltage. If actual input voltage is outside of this range, output may not
be available.
50/60 Hz
Single
Phase
Input Voltage (V)
230
Input Amperes (A) At Rated Output
17.7
Max Recommended Standard Fuse Rating In Amperes
1
Time-Delay Fuses
2
20
Normal Operating Fuses
3
25
Min Input Conductor Size In AWG
4
14
Max Recommended Input Conductor Length In Feet (Meters)
65
(20)
Min Grounding Conductor Size In AWG
4
14
Reference: 2008 National Electrical Code (NEC) (including article 630)
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” . See UL 248.
3 “Normal Operating” (general purpose - no intentional delay) fuses are UL class “K5” (up to and including 60 amps), and UL class “H” ( 65 amps 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.
4-10. Extension Cord Data
Input Voltage
Input Power
Phase
Hertz
Conductor Size
Max. Cord Length
115 V
1
50/60
14 AWG
24 ft (7 m)
230 V
1
50/60
14 AWG
65 ft (20 m)
