Miller Electric 280 NT - Manual (Page 17)

OM-4402 Page 13
Duty cycle is the percentage of 10
minutes that unit can weld at rated
load without overheating.
Y Exceeding duty cycle can
damage unit and void
warranty.
100% Duty Cycle at 280 Amperes DC
199 467-A
Continuous Welding
3-7. Duty Cycle
100
150
200
250
300
350
0 10 20 30 40 50 60 70 80 90 100
AC WELD
DC WELD − KOHLER
DC WELD − ONAN
WELDING AMPERES
% DUTY CYCLE
SECTION 4 − INSTALLATION
install1 10/00 − Ref. 800 652 / Ref. 800 477-A / 158 936-A / S-0854
Y Do not weld on base. Weld-
ing on base can cause fuel
tank fire or explosion. Bolt
unit down using holes pro-
vided in base.
Y Always securely fasten
welding generator onto
transport vehicle or trailer
and comply with all DOT and
other applicable codes.
Y Always ground generator
frame to vehicle frame to pre-
vent electric shock and static
electricity hazards.
1 Generator Base
2 Metal Vehicle Frame
3 Equipment Grounding
Terminal
4 Grounding Cable
Use #10 AWG or larger insulated
copper wire.
Y If unit does not have GFCI re-
ceptacles, use GFCI-
protected extension cord.
1
2
Electrically bond genera-
tor frame to vehicle frame
by metal-to-metal contact.
GND/PE
3
4
2
OR
OR
18 in
(460 mm)
18 in
(460 mm)
18 in
(460 mm)
18 in
(460 mm)
18 in
(460 mm)
OR
Movement Airflow Clearance
Location Grounding
Y Do not lift unit from end.
4-1. Installing Welding Generator