Electrical Service Guide; Placing Jumper Links - Miller Electric Subarc DC 650 Owner's Manual

4-17. Electrical Service Guide

Failure to follow these electrical service guide recommendations could create an electric shock or fire hazard. These recommenda-
tions 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.
Input Voltage (V)
Input Amperes (A) At Rated Output
Max Recommended Standard Fuse Rating In Amperes
Min Input Conductor Size In AWG
Max Recommended Input Conductor Length In Feet (Me-
ters)
Min Grounding Conductor Size In AWG
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.

4-18. Placing Jumper Links

230 VOLTS
1
220 VOLTS
(FACTORY OPTION)
Tools Needed:
3/8 in.
3/8 in.
OM-236 684 Page 28
1
2
Time-Delay Fuses
Normal Operating Fuses 3
4
4
380 VOLTS
60 Hz Models
230 460 575
126 63 50.4
150 70 60
200 90 80
1 6 6
208 328 513
(64) (100) (156)
6 8 8
460 VOLTS
400 VOLTS
Do not overtighten
jumper link nuts.
Elec Serv 2011−08
50 Hz Models
380 400 440
77 73 66
90 90 80
125 110 100
4 4 4
335 371 449
(102) (113) (137)
6 6 8
!
Disconnect and lockout/tag-
out input power
installing or moving jumper
links.
Check input voltage available at
site.
1 Jumper Link Label
Check label − only one is on unit.
2 Jumper Links
Move jumper links to match input
voltage.
Close and secure access door, or
go on to Section 4-19.
575 VOLTS
Ref. S-174 973-B
440 VOLTS
Ref. S-174 975-B
2
Ref. 800 103-A
520
54
60
80
6
419
(128)
8
before