Owner`s manual
. A complete Parts List is available at www.MillerWelds.com
OM-253 392 Page 22
5-7. Electrical Service Guide
Failure to follow these electrical service guide recommendations could create an electric shock or fire hazard. These
recommendations are for a dedicated circuit sized for the rated output and duty cycle of the welding power source.
In dedicated circuit installations, the National Electrical Code (NEC) allows the receptacle or conductor rating to be less than the rating
of the circuit protection device. All components of the circuit must be physically compatible. See NEC articles 210.21, 630.11, and
630.12.
. 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 230
Single Phase
50/60 Hz 120
Volts AC
Input Voltage (V) 230
A 15 or 20
ampere
individual
branch circuit
protected by
time-delay
fuses or
circuit breaker
is required.
See Section
5-10
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
Elec Serv 2011−04
Reference: 2011 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
310.15(B)(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.
5-8. Extension Cord Data
Input Voltage
Input Power
Phase
Hertz Conductor Size Max. Cord Length
120 V 1 50/60 14 AWG 24 ft (7 m)
230 V 1 50/60 14 AWG 65 ft (20 m)