Miller Millermatic 252 - Electrical Service Guide (208;240 Volt Model)

OM-230693 Page 22
F
Complete Parts List is available at www.MillerWelds.com
5-10. Positioning Jumper Links (208/240 Volt Model)
284705-A / 804911-A
2
208 VOLTS 240 VOLTS
284705-A
3
1
Check input voltage available at site.
1 Jumper Links Access Door
Open door.
2 Jumper Link Label
Check label − only one is on unit.
3 Input Voltage Jumper Links
Move jumper links to match input voltage.
Close and secure access door.
OM-222 Page 1
allen_wrench
NGO’s
tools/
flathead philips head wrench
pliers
knife
heavy-duty workclamp light-duty workclamp wirecutter frontcutter
allen_set
needlenose
steelbrush nutdriver
chippinghammer
solderiron
stripcrimp
drill
torque wrench
socket wrench
hammer awl file
crimper
paintbrush
feelergauge flashlight ruler
toothbrush
greasegun
qtip (swab)
vicegrip
handream
punch
filterwrench
strapwrench
airgun
solvent pinextractor eprompuller pipewrench
torque screwdriver
cr
escent wrench
OM-222 Page 1
allen_wrench
NGO’s
tools/
flathead philips head wrench
pliers
knife
heavy-duty workclamp light-duty workclamp wirecutter frontcutter
allen_set
needlenose
steelbrush nutdriver
chippinghammer
solderiron
stripcrimp
drill
torque wrench
socket wrench
hammer awl file
crimper
paintbrush
feelergauge flashlight ruler
toothbrush
greasegun
qtip (swab)
vicegrip
handream
punch
filterwrench
strapwrench
airgun
solvent pinextractor eprompuller pipewrench
torque screwdriver
crescent wrench
3/8 in.
5-11. Electrical Service Guide (208/240 Volt Model)
Failure to follow these electrical service guide recommendations could create an electric shock or fire hazard. These recommen-
dations are for an individual branch circuit sized for the rated output and duty cycle of one welding power source. In individual
branch 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.
60 Hz 1-Phase
Rated Supply Voltage (V) 208 240
Rated Maximum Supply Current I
1max
(A) 68.1 60.0
Rated Effective Supply Current I
1eff
(A) 48.8 45.0
Maximum Recommended Standard Fuse Rating In Amperes
1
Time Delay Fuses
2
80 70
Normal Operating Fuses
3
100 90
Minimum Supply Conductor Size In AWG (mm
2
)
5
8 (10) 8 (10)
Maximum Recommended Supply Conductor Length In Feet (Meters)
4
79 (24) 105 (32)
Minimum Grounding Conductor Size In AWG (mm
2
)
5
8 (10) 8 (10)
Reference: 2020 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).
5 Raceway 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) and is based on allowable ampacities of insulated copper conductors having a temperature rating of 75°C (167°F)
with not more than three single current-carrying conductors in a raceway.
4 Maximum total length of copper input conductors in entire installation, raceway and/or flexible cord.