Section 7 − Operating Auxiliary Equipment; Generator Power Receptacles - Miller Electric 250 Owner's Manual

SECTION 7 − OPERATING AUXILIARY EQUIPMENT

7-1. Generator Power Receptacles

4
803 750-B / Ref. 211 362-A
2 3
5 6
1
7
.
A complete Parts List is available at www.MillerWelds.com
!
If unit does not have GFCI recep-
tacles, use GFCI-protected extension
cord.
NOTICE − Disconnect equipment from auxil-
iary power receptacles during start−up and
shutdown. Some equipment can be dam-
aged by changes in frequency as engine
rpms change during start-up and shutdown.
.
Generator power decreases as weld
current increases.
Set Fine Control R1 at 10 for full genera-
tor power.
1 240 V 50 A AC Receptacle RC1
RC1 supplies 60 Hz single-phase power at
weld/power speed. Maximum output is 10
kVA/kW. See section 7-3 for information on
wiring optional 240 V single-phase plug.
2 120 V 20 A Duplex Receptacle RC2
3 120 V 20 A Duplex Receptacle RC3
RC2 and RC3 supply 60 Hz single-phase
power at weld/power speed. Maximum out-
put from RC2 or RC3 is 2.4 kVA/kW.
4 Supplementary Protector CB1
CB1 protects receptacles RC1, RC2, and
RC3 from overload. If CB1 opens, the recep-
tacles do not work. Place switch in On posi-
tion to reset.
5 Supplementary Protector CB2
6 Supplementary Protector CB3
CB2 protects RC2 and CB3 protects RC3
from overload. If a supplementary protector
opens, the receptacle does not work.
.
Press button to reset. If supplementary
protector continues to open, contact
Factory Authorized Service Agent.
!
Power is still present at the 240 volt
receptacle if CB2 and/or CB3 trips.
Unplug power cord before attempting
to service accessories or tools.
7 Optional 120 V 20 A AC GFCI Recep-
tacles GFCI-2 and GFCI-3
GFCI2 and GFCI3 supply 60 Hz single-
phase power at weld/power speed. Maxi-
mum output from GFCI-2 or GFCI-3 is 2.4
kVA/kW. Circuit protection is the same as
standard receptacles.
If a ground fault is detected, the GFCI Reset
button pops out and the circuit opens to dis-
connect the faulty equipment. Check for
damaged tools, cords, plugs, etc. connected
to the receptacle. Press button to reset re-
ceptacle and resume operation.
.
At least once a month, run engine at
weld/power speed and press Test button
to verify GFCI is working properly.
Combined output of all receptacles limited to
10 kVA/kW rating of the generator.
EXAMPLE: If 20 A is drawn from each 120
V duplex receptacle, only 21 A is available at
the 240V receptacle:
2 x (120 V x 20 A) + (240 V x 21 A) = 10 kVA/
kW
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